SMA MVPS 500SC-JP, MVPS 630SC-JP, MVPS 800SC-JP, MVPS 1000SC-JP, MVPS 1250SC-JP System Manual
...Page 1
SystemManual
MEDIUM VOLTAGE POWER STATION 500SC-JP/ 630SC-JP/
800SC-JP/ 1000SC-JP/ 1250SC-JP/ 1600SC-JP
MVPS22JP-SH-en-11 | 101817-00.01 | Version 1.1
ENGLISH
Page 2
Legal Provisions
SMA Solar Technology AG
Legal Provisions
The information contained in these documents is property of SMA Solar Technology AG. Any publication, whether in
whole or in part, requires prior written approval by SMA Solar Technology AG. Internal reproduction used solely for
the purpose of product evaluation or other proper use is allowed and does not require prior approval.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. Missing designations do not mean that a
product or brand is not a registered trademark.
Modbus® is a registered trademark of SchneiderElectric and is licensed by the ModbusOrganization,Inc.
QRCode is a registered trademark of DENSOWAVEINCORPORATED.
Phillips® and Pozidriv® are registered trademarks of PhillipsScrewCompany.
Torx® is a registered trademark of AcumentGlobalTechnologies,Inc.
SMASolarTechnologyAG
Sonnenallee 1
34266 Niestetal
Germany
Tel. +49 561 9522-0
Fax +49 561 9522-100
www.SMA.de
E-mail: info@SMA.de
© 2004 to 2015SMASolarTechnologyAG. All rights reserved.
System ManualMVPS22JP-SH-en-112
Page 3
SMA Solar Technology AG
Table of Contents
Table of Contents
1 Information on this Document ..................................................................................................... 12
1.1 Validity .............................................................................................................................................................. 12
1.2 Target Group .................................................................................................................................................... 12
1.3 Additional Information...................................................................................................................................... 12
1.4 Symbols............................................................................................................................................................. 12
1.5 Typographies.................................................................................................................................................... 13
1.6 Nomenclature................................................................................................................................................... 13
2 Safety............................................................................................................................................. 14
2.1 Intended Use..................................................................................................................................................... 14
2.2 Safety Information ............................................................................................................................................ 15
2.3 Personal Protective Equipment......................................................................................................................... 18
3 Product Overview......................................................................................................................... 19
3.1 System Overview.............................................................................................................................................. 19
3.2 Design of the MV Power Station ..................................................................................................................... 19
3.3 Design of the inverter ....................................................................................................................................... 20
3.4 Devices of the Inverter...................................................................................................................................... 21
3.5 Devices of the MV Transformer ....................................................................................................................... 22
3.6 Devices of the Medium-Voltage Compartment............................................................................................... 22
3.7 Devices of the Medium-Voltage Switchgear................................................................................................... 23
3.8 Devices of the Station Subdistribution............................................................................................................. 24
3.9 Devices of the Communit ................................................................................................................................. 24
3.10 Oil Tray ............................................................................................................................................................. 25
3.11 Transformer for Internal Power Supply............................................................................................................ 26
3.12 Circuitry Principle of the MV Power Station.................................................................................................... 26
3.13 Operating and Display Elements..................................................................................................................... 27
3.13.1 Switch in the Inverter........................................................................................................................................ 27
3.13.1.1 Key Switch........................................................................................................................................................ 27
3.13.1.2 AC Disconnection Unit .................................................................................................................................... 28
3.13.1.3 DC Switchgear................................................................................................................................................. 28
3.13.2 Switch in the Station Subdistribution............................................................................................................... 29
3.13.3 Switch on the Medium-Voltage Switchgear ................................................................................................... 30
3.13.4 Switch on the Control Device for Cascade Control....................................................................................... 30
3.13.5 Touch Display................................................................................................................................................... 31
3.13.5.1 Design............................................................................................................................................................... 31
3.13.5.2 Explanation of Symbols................................................................................................................................... 31
3.13.6 LEDs of the SC-COM ....................................................................................................................................... 35
3.13.6.1 LEDs on the Enclosure...................................................................................................................................... 35
3.13.6.2 LEDs on the Network Port................................................................................................................................ 36
3.13.6.3 LEDs on the Optical Fiber Terminals............................................................................................................... 37
3.13.7 User Interface ................................................................................................................................................... 37
3.13.7.1 Design of the User Interface............................................................................................................................ 37
3.13.7.2 Tree View and Device View............................................................................................................................ 38
3.13.7.3 Status Symbols................................................................................................................................................. 38
3.14 Symbols on the Product.................................................................................................................................... 39
4 Transport and Mounting .............................................................................................................. 40
4.1 Safety during Transport and Mounting........................................................................................................... 40
System Manual 3MVPS22JP-SH-en-11
Page 4
Table of Contents
SMA Solar Technology AG
4.2 Requirements for Transport and Mounting ..................................................................................................... 41
4.2.1 Requirements and Ambient Conditions........................................................................................................... 41
4.2.2 Center of Gravity Marker................................................................................................................................ 41
4.3 Transporting the MV Power Station Using a Crane....................................................................................... 41
4.4 Transporting the MV Power Station by Truck, Train and Ship....................................................................... 42
4.5 Removing the Supplied Mounting Material from the MV Power Station...................................................... 42
4.6 Attaching the Support Feet to the MV Power Station..................................................................................... 43
4.7 Mounting the MV Power Station ..................................................................................................................... 45
5 Installation..................................................................................................................................... 49
5.1 Safety during Installation ................................................................................................................................. 49
5.2 Installation Sequence ....................................................................................................................................... 51
5.3 Preparatory Work............................................................................................................................................. 52
5.3.1 Removing the Transport Locks from the Inverter Compartment..................................................................... 52
5.3.1.1 Loosening the Tie-Down Straps ....................................................................................................................... 52
5.3.1.2 Removing the Air Cushion ............................................................................................................................... 52
5.3.1.3 Opening the Drain Orifices in the Inverter Compartment ............................................................................. 53
5.3.2 Mounting the Exhaust Duct under the Inverters.............................................................................................. 53
5.3.3 Removing the Transport Lock from the MV Transformer Compartment ........................................................ 54
5.3.4 Working in the Compartment of the Medium-Voltage Switchgear............................................................... 55
5.3.5 Removing the Desiccant Bags ......................................................................................................................... 56
5.3.5.1 Removing the Desiccant Bag from the Station Container ............................................................................. 56
5.3.5.2 Replacing the Desiccant Bag in the Inverter .................................................................................................. 56
5.3.6 Connecting the Battery to the Control Device of the Cascade Control........................................................ 56
5.4 Installing the Grounding on the Station Container......................................................................................... 57
5.5 Installing the AC Connection ........................................................................................................................... 58
5.5.1 Installing the AC Connection on the Medium-Voltage Switchgear............................................................... 58
5.5.2 Installing the AC Connection on the MV Transformer ................................................................................... 59
5.6 Installing the DC Connection ........................................................................................................................... 60
5.6.1 Connecting the DC Cable to the Busbar ........................................................................................................ 60
5.6.2 Connecting the DC Cables to the Connection Brackets................................................................................ 62
5.7 Connecting the Cables for Communication, Control, Supply Voltage and Monitoring .............................. 63
5.7.1 Connecting the Cables in the Communit ........................................................................................................ 63
5.7.1.1 Connecting Optical Fibers .............................................................................................................................. 63
5.7.1.2 Connecting the Network Cables .................................................................................................................... 64
5.7.2 Connecting the Cable in the Inverter .............................................................................................................. 65
5.7.2.1 Connecting Optical Fibers with Subscriber Connector ................................................................................. 65
5.7.2.2 Connecting Optical Fibers via Optical Fiber Pigtail ...................................................................................... 67
5.7.2.3 Connecting the Network Cables .................................................................................................................... 68
5.7.2.4 Connecting Cables for Analog Setpoints....................................................................................................... 69
5.7.2.5 Connecting the Cable for the External Fast Stop........................................................................................... 69
5.7.2.6 Connecting the Cable for Remote Shutdown................................................................................................. 70
5.7.2.7 Connecting the Cable for the Status Report of the Insulation Monitoring ................................................... 70
5.7.2.8 Connecting the Cable for the Status Report of the AC Contactor Monitoring ............................................ 70
5.7.2.9 Connecting the Data Cable of the Sunny String-Monitor ............................................................................. 71
5.8 Completion Work............................................................................................................................................. 71
5.8.1 Closing the Base Plates on the Inverter........................................................................................................... 71
6 Commissioning.............................................................................................................................. 72
6.1 Safety during Commissioning .......................................................................................................................... 72
6.2 Requirements for Commissioning..................................................................................................................... 73
System ManualMVPS22JP-SH-en-114
Page 5
SMA Solar Technology AG
Table of Contents
6.3 Visual Inspection and Mechanical Test........................................................................................................... 74
6.3.1 Sequence for Visual Inspection and Mechanical Test ................................................................................... 74
6.3.2 MV Power Station ............................................................................................................................................ 74
6.3.2.1 Checking the Grounding ................................................................................................................................. 74
6.3.2.2 Checking the High-Current Contacts Made at the Factory ........................................................................... 75
6.3.2.3 Checking the Connections of the Cables for Communication, Control Supply Voltage and Monitoring.. 75
6.3.2.4 Checking the High-Current Contacts Made at the Installation Site .............................................................. 75
6.3.3 Sunny Central................................................................................................................................................... 76
6.3.3.1 Checking the Settings of the Switching Units ................................................................................................. 76
6.3.3.2 Checking the Connectors ................................................................................................................................ 76
6.4 Connection and Measurement ....................................................................................................................... 76
6.4.1 Sequence for Connection and Measurement ................................................................................................ 76
6.4.2 Adjusting the Transmission Ratio of the MV Transformer............................................................................... 77
6.4.3 Checking the Voltages of the MV Transformer .............................................................................................. 77
6.4.4 Checking and Connecting the Supply Voltage.............................................................................................. 77
6.4.5 Checking the Output Voltage of the Inverter.................................................................................................. 77
6.4.6 Checking the DC Voltage................................................................................................................................ 78
6.4.7 Switching On the Supply Voltage and the AC Disconnection Unit .............................................................. 78
6.5 Configuration.................................................................................................................................................... 79
6.5.1 Checking the Settings of the Protective and Control Devices........................................................................ 79
6.5.2 Configuring the Network Settings on the Computer...................................................................................... 81
6.5.3 Information on Integrating the Inverter into a Local Network ....................................................................... 81
6.5.4 Configuring the Inverter for a Static Network ................................................................................................ 82
6.5.5 Adjusting Network Ports .................................................................................................................................. 82
6.5.6 Detecting New Devices ................................................................................................................................... 83
6.5.7 Setting the Power Limitation............................................................................................................................. 83
6.5.7.1 Setting the Active Power Ramp-Up ................................................................................................................. 83
6.5.7.2 Setting the Frequency-Dependent Active Power Limitation ........................................................................... 84
6.5.7.3 Setting the Frequency-Independent Active Power Limitation......................................................................... 84
6.5.7.4 Setting Reactive Power Control....................................................................................................................... 85
6.5.7.5 Setting Q at Night ........................................................................................................................................... 85
6.5.8 Setting Grid Monitoring and Grid Limits......................................................................................................... 86
6.5.8.1 Setting Grid Voltage Monitoring .................................................................................................................... 86
6.5.8.2 Setting Power Frequency Monitoring ............................................................................................................. 86
6.5.8.3 Activating the Manual Resume Mode ............................................................................................................ 87
6.5.9 Setting the Grid Support.................................................................................................................................. 87
6.5.9.1 Setting Full and Limited Dynamic Grid Support (FRT) ................................................................................... 87
6.5.9.2 Setting Enable Islanding Detection ................................................................................................................. 87
6.5.9.3 Setting the Medium Voltage ........................................................................................................................... 88
6.5.10 Setting the Remote Shutdown.......................................................................................................................... 88
6.5.11 Setting the String Current Monitoring ............................................................................................................ 88
6.5.11.1 Detecting the Sunny Central String-Monitor Controller and the Inverter...................................................... 88
6.5.11.2 Setting the Date and Time of the Sunny Central String-Monitor Controller ................................................. 88
6.5.11.3 Detecting the Sunny String-Monitors via the Sunny Central String-Monitor Controller............................... 88
6.5.11.4 Redetecting the Sunny String-Monitors via the Sunny Central String-Monitor Controller ........................... 89
6.5.11.5 Detecting the Sunny String-Monitors via the Communication Unit ............................................................... 89
6.5.11.6 Adjusting the Identification of the Sunny String-Monitors.............................................................................. 89
6.5.12 Changing System Settings via Touch Display ................................................................................................ 90
6.5.12.1 Selecting the Language................................................................................................................................... 90
6.5.12.2 Setting the Date, Time and Time Zone ........................................................................................................... 90
6.5.12.3 Selecting the Display Format........................................................................................................................... 90
6.5.12.4 Setting the Brightness....................................................................................................................................... 90
6.5.13 Changing the System Settings via the User Interface .................................................................................... 90
System Manual 5MVPS22JP-SH-en-11
Page 6
Table of Contents
6.5.13.1 Selecting the Language................................................................................................................................... 90
6.5.13.2 Setting the Date, Time and Time Zone ........................................................................................................... 91
6.5.13.3 Entering the Operator Name.......................................................................................................................... 91
6.5.13.4 Changing the Password for the User Groups................................................................................................ 91
6.5.14 Configuring System Settings via XML File....................................................................................................... 92
6.5.14.1 Uploading the File custom.xml........................................................................................................................ 92
6.5.14.2 Downloading the File custom.xml................................................................................................................... 92
6.5.14.3 Deleting the File custom.xml............................................................................................................................ 92
6.5.15 Resetting the Communication Unit................................................................................................................... 93
SMA Solar Technology AG
6.6 Function Test...................................................................................................................................................... 93
6.6.1 Checking the Fans............................................................................................................................................ 93
6.6.2 Checking the Heating Elements and Hygrostat.............................................................................................. 94
6.7 Switching the Inverter On................................................................................................................................. 95
7 Disconnecting and Reconnecting................................................................................................. 96
7.1 Safety When Disconnecting and Reconnecting Voltage Sources................................................................. 96
7.2 Connection Point Overview ............................................................................................................................. 98
7.2.1 Power Connection Points ................................................................................................................................. 98
7.2.2 Connection Points for Supply Voltage ............................................................................................................ 99
7.3 Disconnecting the Supply Voltages of the Station Subdistribution................................................................ 99
7.4 Disconnecting the Inverter................................................................................................................................100
7.4.1 Switching off the Inverter .................................................................................................................................100
7.4.2 Disconnecting the DC Side..............................................................................................................................100
7.4.3 Disconnecting the AC Side..............................................................................................................................100
7.4.4 Disconnecting the Supply Voltage and External Voltages ............................................................................100
7.5 Disconnecting the MV Transformer .................................................................................................................101
7.6 Disconnecting the MV Power Station..............................................................................................................101
7.7 Reconnecting the MV Power Station...............................................................................................................102
7.8 Reconnecting the MV Transformer ..................................................................................................................102
7.9 Reconnecting the Inverter.................................................................................................................................103
7.9.1 Reconnecting the Supply Voltage and External Voltages .............................................................................103
7.9.2 Reconnecting the AC Side...............................................................................................................................104
7.9.3 Reconnecting the DC Side...............................................................................................................................104
7.9.4 Restarting the Inverter ......................................................................................................................................104
7.10 Reconnecting the Supply Voltage of the Station Subdistribution ..................................................................104
8 Operation......................................................................................................................................105
8.1 Safety during Operation..................................................................................................................................105
8.2 Displaying Operating Data .............................................................................................................................105
8.2.1 Displaying Operating Data via the User Interface ........................................................................................105
8.2.2 Displaying the Operation Data via Sunny Portal...........................................................................................106
8.2.2.1 Registering the Inverter in Sunny Portal .......................................................................................................... 106
8.2.2.2 Adjusting the PV System Identifier for Sunny Portal ....................................................................................... 106
8.2.2.3 Deleting the Sunny Portal Buffer ..................................................................................................................... 106
8.3 Saving Operating Data....................................................................................................................................107
8.3.1 Reducing Storage Capacity by Averaging ....................................................................................................107
8.3.2 Setting the Data Transmission Frequency .......................................................................................................107
8.3.3 Downloading Operating Data Using the FTP Server.....................................................................................107
8.3.3.1 Defining Read and Write Access Rights......................................................................................................... 107
8.3.3.2 Accessing the FTP Server via the Web Browser ............................................................................................ 108
8.3.3.3 Activating Automatic Data Transmission via FTP Push ................................................................................... 108
System ManualMVPS22JP-SH-en-116
Page 7
SMA Solar Technology AG
Table of Contents
8.3.4 Downloading Operating Data via HTTP Download......................................................................................109
8.3.4.1 Downloading Data in XML Format ................................................................................................................. 109
8.3.4.2 Downloading Data in CSV Format ................................................................................................................. 109
8.3.5 Saving Operating Data on a Memory Card..................................................................................................110
8.3.5.1 Information on Saving Data on a Memory Card .......................................................................................... 110
8.3.5.2 Inserting the Memory Card ............................................................................................................................. 111
8.3.5.3 Enabling Data Storage on the Memory Card ............................................................................................... 111
8.3.5.4 Displaying the Memory Capacity Available on the Memory Card ............................................................. 111
8.4 Updating the Firmware ....................................................................................................................................111
8.4.1 Automatic Update............................................................................................................................................111
8.4.2 Update via User Interface ...............................................................................................................................112
8.5 Changing the Insulation Monitoring................................................................................................................112
8.5.1 Insulation Monitoring with GFDI and Insulation Monitoring Device ...........................................................112
8.5.1.1 Safety with insulation monitoring with GFDI and insulation monitoring device ........................................... 112
8.5.1.2 Switching to Insulated Operation ................................................................................................................... 112
8.5.1.3 Switching to Grounded Operation ................................................................................................................. 113
8.5.2 Insulation Monitoring with Remote GFDI and Insulation Monitoring Device...............................................113
8.5.2.1 Information on Insulating PV Modules with Remote GFDI and Insulation Monitoring Device ................... 113
8.5.2.2 Switching to Insulated Operation ................................................................................................................... 113
8.5.2.3 Switching to Grounded Operation ................................................................................................................. 113
8.6 Deleting the Device Description.......................................................................................................................114
8.7 Sending a ZIP File with Service Information ...................................................................................................114
9 Troubleshooting ............................................................................................................................115
9.1 Safety during Troubleshooting.........................................................................................................................115
9.2 Troubleshooting in the Medium-Voltage Compartment .................................................................................115
9.3 Troubleshooting in the Inverter ........................................................................................................................118
9.3.1 Activating Alert in the Event of a Fault............................................................................................................118
9.3.2 Reading Off Disturbance Messages...............................................................................................................119
9.3.2.1 Reading Off Error Messages via Touch Display............................................................................................ 119
9.3.2.2 Reading Off Disturbance Messages via the User Interface .......................................................................... 119
9.3.2.3 Enabling Automatic Read-Out of Events......................................................................................................... 119
9.3.2.4 Displaying and Downloading the Event Report............................................................................................. 119
9.3.3 Acknowledging Disturbance Messages .........................................................................................................120
9.3.3.1 Acknowledging Disturbance Messages via the Key Switch ......................................................................... 120
9.3.3.2 Acknowledging Disturbance Messages via the User Interface .................................................................... 120
9.3.4 Remedial Action in Case of Disturbances.......................................................................................................120
9.3.4.1 Inverter Behavior in Case of Disturbances ..................................................................................................... 120
9.3.4.2 Explanation of the Error Tables....................................................................................................................... 122
9.3.4.3 Error Numbers 01xx to 13xx - Disturbance on the Utility Grid .................................................................... 122
9.3.4.4 Error Numbers 34xx to 40xx - Disturbance on the PV Array ....................................................................... 125
9.3.4.5 Error Numbers 6xx to 9xx - Disturbance on the Inverter .............................................................................. 127
9.3.4.6 Displaying Disturbance Messages for Active Power Limitation .................................................................... 131
9.3.4.7 Displaying Disturbance Messages for the Reactive Power Setpoint ............................................................ 132
10 Maintenance .................................................................................................................................133
10.1 Safety during Maintenance .............................................................................................................................133
10.2 Maintenance Schedule and Consumables.....................................................................................................133
10.2.1 Notes on Maintenance Work .........................................................................................................................133
10.2.2 Maintenance Work Every 12 Months............................................................................................................134
10.2.2.1 Station Container............................................................................................................................................. 134
10.2.2.2 Medium-Voltage Compartment....................................................................................................................... 134
10.2.2.3 MV Transformer ............................................................................................................................................... 135
System Manual 7MVPS22JP-SH-en-11
Page 8
Table of Contents
10.2.2.4 Medium-Voltage Switchgear........................................................................................................................... 136
10.2.2.5 Station Subdistribution..................................................................................................................................... 136
10.2.3 Maintenance Work Every 24 Months............................................................................................................136
10.2.3.1 Station Subdistribution..................................................................................................................................... 136
10.2.3.2 Medium-Voltage Switchgear........................................................................................................................... 136
10.2.3.3 Low-Voltage Meter (GSE) ............................................................................................................................... 136
10.2.3.4 Sunny Central................................................................................................................................................... 137
10.2.4 Maintenance Work Every 6 Years..................................................................................................................138
10.2.5 Maintenance Work Every 10 Years ...............................................................................................................138
10.2.6 Demand-Based Maintenance..........................................................................................................................138
10.2.6.1 All Devices........................................................................................................................................................ 138
10.2.6.2 Oil Tray............................................................................................................................................................. 139
SMA Solar Technology AG
10.3 Repair Schedule and Spare Parts....................................................................................................................139
10.3.1 Information on Repair Work............................................................................................................................139
10.3.2 Demand-Based Repairs....................................................................................................................................139
10.3.3 Repairs every 5 Years......................................................................................................................................139
10.3.4 Repairs every 10 Years ...................................................................................................................................140
10.3.5 Repairs every 13 Years ...................................................................................................................................140
10.4 General Maintenance Work ...........................................................................................................................140
10.4.1 Performing the Visual Inspection .....................................................................................................................140
10.4.2 Cleaning the Interior ........................................................................................................................................141
10.4.3 Checking the Seals...........................................................................................................................................141
10.4.4 Checking the Latches, Door Stops and Hinges..............................................................................................142
10.4.5 Checking the Inverter Surface .........................................................................................................................143
10.5 Maintenance Work on the Inverter.................................................................................................................144
10.5.1 Analyzing the Temperature Indicators............................................................................................................144
10.5.2 Cleaning the Air Duct and Ventilation Grids..................................................................................................146
10.5.3 Cleaning the Ventilation Plate .........................................................................................................................146
10.5.4 Checking the Fuses/Disconnection Blades.....................................................................................................147
10.5.5 Checking the Bolted Connections of the Power Cabling...............................................................................147
10.5.6 Checking the Surge Arresters..........................................................................................................................148
10.5.7 Checking the Fans............................................................................................................................................149
10.5.8 Checking the Labels.........................................................................................................................................150
10.5.9 Checking the Heating Elements and Hygrostat..............................................................................................152
10.5.10 Checking the Function of the UPS ...................................................................................................................153
10.5.11 Checking the AC Disconnection Unit..............................................................................................................154
10.5.12 Checking the DC switchgear...........................................................................................................................156
11 Disposal .........................................................................................................................................158
12 Periodic Actions.............................................................................................................................159
12.1 Opening and Closing the Doors of the Station Container.............................................................................159
12.2 Setting up the Service Platform at the Medium-Voltage Switchgear Compartment.....................................162
12.3 Mounting and Disassembly Work...................................................................................................................163
12.3.1 Mounting and Disassembly Work in the Inverter...........................................................................................163
12.3.1.1 Disassembling and Mounting the Protective Covers ..................................................................................... 163
12.3.1.2 Disassembling and Mounting the Panels ....................................................................................................... 164
12.3.1.3 Disassembling and Mounting the Ventilation Grids ...................................................................................... 165
12.3.2 Mounting and Disassembly Work in the Medium-Voltage Switchgear........................................................166
12.3.2.1 Disassembling and Mounting the Kick Plates ................................................................................................ 166
12.4 Cable Entry .......................................................................................................................................................167
12.4.1 Inserting the Cables through the Base Plates .................................................................................................167
System ManualMVPS22JP-SH-en-118
Page 9
SMA Solar Technology AG
12.4.1.1 Overview of the Base Plates on the MV Power Station ................................................................................ 167
12.4.1.2 Inserting Cables through the Base Plates of the Inverters ............................................................................. 167
12.4.1.3 Inserting the Cables through the Base Plates of the Medium-Voltage Switchgear...................................... 168
12.4.1.4 Inserting the Cables through the Cable Glands ............................................................................................ 168
Table of Contents
12.4.2 Inserting the Cables in the Communit .............................................................................................................169
12.4.3 Inserting the Cables .........................................................................................................................................171
12.5 Bolted Connections ..........................................................................................................................................172
12.5.1 Preparing the Grounding and DC Cables for Connection............................................................................172
12.6 Clamp Connections..........................................................................................................................................175
12.6.1 Connecting the Cable to the Spring-Cage Terminals.....................................................................................175
12.6.2 Connecting the Cable Shield Using a Shield Clamping Saddle...................................................................177
12.7 Entering the Password via the Touch Display .................................................................................................177
12.8 Settings on the User Interface of the Inverter..................................................................................................177
12.8.1 Logging Into the User Interface .......................................................................................................................177
12.8.2 Logging Out of the User Interface...................................................................................................................178
12.8.3 Accessing the Parameter Overview ................................................................................................................178
12.8.4 Saving Parameter Changes.............................................................................................................................178
13 Function Description .....................................................................................................................179
13.1 Operating States ..............................................................................................................................................179
13.1.1 Overview of the Operating States ..................................................................................................................179
13.1.2 Stop...................................................................................................................................................................180
13.1.3 Grid Monitoring ..............................................................................................................................................180
13.1.3.1 Monitoring the Grid Voltage........................................................................................................................... 180
13.1.3.2 Monitoring the Power Frequency ................................................................................................................... 181
13.1.4 Grid Monitoring Time Reached.......................................................................................................................181
13.1.5 Startup...............................................................................................................................................................182
13.1.5.1 In Normal Operation: Active Power Ramp-Up .............................................................................................. 182
13.1.5.2 After Grid Fault: Decoupling Protection Ramp............................................................................................... 182
13.1.6 Load Operation................................................................................................................................................182
13.1.6.1 MPP .................................................................................................................................................................. 182
13.1.6.2 Q at Night........................................................................................................................................................ 182
13.1.7 Shutdown..........................................................................................................................................................183
13.1.8 Disturbance.......................................................................................................................................................183
13.2 Safety Functions................................................................................................................................................183
13.2.1 Manual Shutdown Functions...........................................................................................................................183
13.2.1.1 External Fast Stop ............................................................................................................................................ 183
13.2.1.2 Remote Shutdown............................................................................................................................................ 184
13.2.2 Automatic Shutdown Functions .......................................................................................................................184
13.2.2.1 Grid Management Shutdown......................................................................................................................... 184
13.2.2.2 Active Islanding Detection............................................................................................................................... 184
13.2.2.3 Passive Islanding Detection............................................................................................................................. 184
13.2.3 Grounding and Insulation Monitoring............................................................................................................185
13.2.3.1 Mode of Operation......................................................................................................................................... 185
13.2.3.2 GFDI ................................................................................................................................................................. 185
13.2.3.3 Remote GFDI.................................................................................................................................................... 186
13.2.3.4 Insulation Monitoring Device .......................................................................................................................... 187
13.2.3.5 GFDI and Insulation Monitoring Device......................................................................................................... 188
13.2.3.6 Remote GFDI and Insulation Monitoring Device........................................................................................... 189
13.3 Power Control...................................................................................................................................................190
13.3.1 Frequency-Dependent Active Power Limitation ..............................................................................................190
13.3.2 Frequency-Independent Active Power Limitation............................................................................................191
System Manual 9MVPS22JP-SH-en-11
Page 10
Table of Contents
13.3.2.1 No Active Power Limitation: Off Mode.......................................................................................................... 191
13.3.2.2 Active Power Limitation with Setpoint Command via Modbus Protocol: WCtlCom Mode ........................ 191
13.3.2.3 Active Power Limitation with Absolute Value: WCnst Mode ........................................................................ 191
13.3.2.4 Active Power Limitation as a Percentage of Nominal Power: WCnstNom Mode ...................................... 191
13.3.2.5 Active Power Limitation via Standard Signal: WCnstNomAnIn Mode ........................................................ 192
SMA Solar Technology AG
13.3.3 Reactive Power Control ...................................................................................................................................192
13.3.3.1 No Reactive Power Control: Off Mode ......................................................................................................... 192
13.3.3.2 Reactive Power Control with Setpoint Command via Modbus Protocol: VArCtlCom Mode...................... 192
13.3.3.3 Reactive Power Control with Setpoint Command via Modbus Protocol: PFCtlCom Mode........................ 192
13.3.3.4 Reactive Power Control with Absolute Value: VArCnst Mode...................................................................... 192
13.3.3.5 Reactive Power Control as a Percentage of the Nominal Power: VArCnstNom Mode ............................. 192
13.3.3.6 Reactive Power Setpoint via Standard Signal: VArCnstNomAnIn Mode .................................................... 193
13.3.3.7 Reactive Power Setpoint via Displacement Power Factor cos φ: PFCnst Mode .......................................... 193
13.3.3.8 Displacement Power Factor cos φ via Standard Signal: PFCnstAnIn Mode................................................ 194
13.3.3.9 Displacement Power Factor cos φ as a Function of Feed-In Power: PFCtlW Mode.................................... 195
13.3.3.10 Reactive Power as a Function of the Grid Voltage: VArCtlVol Mode.......................................................... 195
13.3.3.11 Measures for Voltage Support through Parameterization of Reactive Power/Voltage Characteristic
Curve: VArCtlVolHystDb Mode...................................................................................................................... 196
13.3.3.12 Measures for Voltage Support through Parameterization of Reactive Power/Voltage Characteristic
Curve: VArCtlVolHystDbA Mode ................................................................................................................... 199
13.3.4 Q at Night ........................................................................................................................................................200
13.3.4.1 No Q at Night: Off Mode .............................................................................................................................. 200
13.3.4.2 Q at Night with Operation Command via Modbus Protocol: VArCtlCom Mode....................................... 200
13.3.4.3 Q at Night with Absolute Value: VArCnst Mode .......................................................................................... 200
13.3.4.4 Q at Night as a Percentage of the Nominal Power: VArCnstNom Mode .................................................. 200
13.3.4.5 Q at Night via Standard Signal: VArCnstNomAnIn Mode .......................................................................... 200
13.3.4.6 Q at Night Depending on the Grid Voltage: VArCtlVol Mode.................................................................... 201
13.3.4.7 Measures for Voltage Support through Parameterization of Reactive Power/Voltage Characteristic
Curve: VArCtlVolHystDb Mode...................................................................................................................... 202
13.3.4.8 Measures for Voltage Support through Parameterization of Reactive Power/Voltage Characteristic
Curve: VArCtlVolHystDbA Mode ................................................................................................................... 205
13.3.5 Behavior in the Absence of Active and Reactive Power Setpoints................................................................206
13.4 Structure of the Communication Network.......................................................................................................206
13.5 Grid Management Services.............................................................................................................................208
13.5.1 Dynamic Grid Support (FRT) ...........................................................................................................................208
13.5.1.1 Full and Limited Dynamic Grid Support (FRT)................................................................................................ 208
13.5.1.2 Grid Support in Case of Untervoltage (LVRT)................................................................................................ 208
13.5.1.3 Dynamic Undervoltage Detection................................................................................................................... 209
13.5.1.4 Grid Support in the Event of Overvoltage (HVRT)......................................................................................... 210
13.6 Cascade Control ..............................................................................................................................................211
13.7 Grid Protection..................................................................................................................................................212
13.8 Low-Voltage Meter ...........................................................................................................................................212
13.9 Zone Monitoring...............................................................................................................................................213
14 Operating Data and Parameters ................................................................................................214
14.1 Operating Data ................................................................................................................................................214
14.1.1 Inverter..............................................................................................................................................................214
14.1.1.1 Power Limitation............................................................................................................................................... 214
14.1.1.2 Error Channels ................................................................................................................................................. 216
14.1.1.3 Measured Values............................................................................................................................................. 217
14.1.1.4 Internal Device Values..................................................................................................................................... 217
14.1.1.5 Internal Meters................................................................................................................................................. 217
14.1.1.6 Service-Relevant Displays................................................................................................................................ 218
14.1.2 Sunny Central String-Monitor Controller ........................................................................................................218
System ManualMVPS22JP-SH-en-1110
Page 11
SMA Solar Technology AG
14.1.2.1 Instantaneous Values....................................................................................................................................... 218
14.1.2.2 Internal Device Values..................................................................................................................................... 218
14.1.2.3 Status Values.................................................................................................................................................... 219
14.1.3 Sunny String-Monitor .......................................................................................................................................219
14.1.3.1 Instantaneous Values....................................................................................................................................... 219
14.1.3.2 Internal Device Values..................................................................................................................................... 219
14.1.3.3 Status Values.................................................................................................................................................... 219
14.1.4 Zone Monitoring ..............................................................................................................................................219
14.1.4.1 Instantaneous Values....................................................................................................................................... 219
14.1.4.2 Status Values.................................................................................................................................................... 220
Table of Contents
14.2 Parameters .......................................................................................................................................................220
14.2.1 Inverter..............................................................................................................................................................220
14.2.1.1 Power Limitation............................................................................................................................................... 220
14.2.1.2 Grid Monitoring and Grid Limits..................................................................................................................... 229
14.2.1.3 Grid Support .................................................................................................................................................... 232
14.2.1.4 Insulation monitoring ....................................................................................................................................... 233
14.2.1.5 Project-Specific Parameters ............................................................................................................................. 233
14.2.2 Sunny Central String-Monitor Controller ........................................................................................................236
14.2.3 Sunny String-Monitor .......................................................................................................................................237
14.2.4 Zone Monitoring ..............................................................................................................................................239
15 Technical Data...............................................................................................................................241
15.1 MV Power Station 500SC-JP ...........................................................................................................................241
15.2 MV Power Station 630SC-JP ...........................................................................................................................242
15.3 MV Power Station 800SC-JP ...........................................................................................................................243
15.4 MV Power Station 1000SC-JP.........................................................................................................................244
15.5 MV Power Station 1250SC-JP.........................................................................................................................246
15.6 MV Power Station 1600SC-JP.........................................................................................................................247
16 Appendix.......................................................................................................................................249
16.1 Scope of Delivery .............................................................................................................................................249
16.2 Storage..............................................................................................................................................................251
16.3 Installation Information.....................................................................................................................................252
16.3.1 Torques .............................................................................................................................................................252
16.3.2 Reduction of DC Input Currents for DC Fuses ................................................................................................252
16.4 XML File custom.xml .........................................................................................................................................253
16.4.1 Structure of the XML File custom.xml...............................................................................................................253
16.4.2 Parameters and Values for the File custom.xml..............................................................................................254
17 Contact...........................................................................................................................................256
System Manual 11MVPS22JP-SH-en-11
Page 12
1 Information on this Document
SMA Solar Technology AG
1 Information on this Document
1.1 Validity
This document is valid for the following device types of the MVPowerStation with the inverters of the series
SunnyCentral 500CP-JP/ 630CP-JP/ 800CP-JP:
• Medium Voltage Power Station 500SC-JP (MVPS 500SC-JP)
• Medium Voltage Power Station 630SC-JP (MVPS 630SC-JP)
• Medium Voltage Power Station 800SC-JP (MVPS 800SC-JP)
• Medium Voltage Power Station 1000SC-JP (MVPS 1000SC-JP)
• Medium Voltage Power Station 1250SC-JP (MVPS 1250SC-JP)
• Medium Voltage Power Station 1600SC-JP (MVPS 1600SC-JP)
The production version is indicated on the type label.
Illustrations in this document are reduced to the essential and may deviate from the real product.
1.2 Target Group
The tasks described in this document must only be performed by qualified persons. Qualified persons must have the
following skills:
• Knowledge of how the product works and is operated
• Training in how to deal with the dangers and risks associated with installing and using electrical devices and
systems
• Training in the installation and commissioning of electrical devices and systems
• Knowledge of all applicable standards and directives
• Knowledge of and adherence to this manual and all safety precautions
1.3 Additional Information
Links to additional information can be found at www.SMA-Solar.com.
1.4 Symbols
Symbol Explanation
Indicates a hazardous situation which, if not avoided, will result in death or serious injury
Indicates a hazardous situation which, if not avoided, can result in death or serious injury
Indicates a hazardous situation which, if not avoided, can result in minor or moderate injury
Indicates a situation which, if not avoided, can result in property damage
Information that is important for a specific topic or goal, but is not safety-relevant
Indicates a requirement for meeting a specific goal
Desired result
A problem that might occur
System ManualMVPS22JP-SH-en-1112
Page 13
SMA Solar Technology AG
1.5 Typographies
Typographies Use Example
1 Information on this Document
bold
>
[Button/Key]
• Display messages
• Elements on a user interface
• Terminals
• Slots
• Elements to be selected
• Elements to be entered
• Connects several elements to be
selected
• Button or key to be selected or
pressed
• Set parameter WGra to 0.2.
• Select PV system > Detect.
• Select [Start detection].
1.6 Nomenclature
The products installed on the Medium Voltage Power Station, such as the inverter or the MV transformer, are referred
to as "devices".
Complete designation Designation in this document
Medium Voltage Power Station MV Power Station
SunnyCentralCommunicationController SC-COM or communication unit
Medium-voltage transformer MV transformer
System Manual 13MVPS22JP-SH-en-11
Page 14
2 Safety
SMA Solar Technology AG
2 Safety
2.1 Intended Use
The MVPowerStation is a complete system for PV power plants. All devices required to convert the direct current
generated by the PV modules into alternating current and to feed this current into the medium-voltage grid are located
in the MVPowerStation.
Operation of the MVPowerStation is only permitted providing that the maximum permissible DC input voltage, AC
output voltage and the required ambient conditions are adhered to. The maximum permissible DC input voltage, AC
output voltage and the required ambient conditions are subject to the respective configuration of the
MVPowerStation. Ensure that the ambient conditions and the maximum permissible voltage are complied with prior to
commissioning the MVPowerStation.
It is only permitted to use the product in a PV power plant which is designed as a closed electrical operating area as
per IEC61936-1.
The specified safety clearances must be observed.
Do not deactivate or modify settings that affect grid management services without first obtaining approval from the grid
operator.
The product is designed for outdoor use only.
Use this product only in accordance with the information provided in the enclosed documentation and with the locally
applicable standards and directives. Any other application may cause personal injury or property damage.
Alterations to the product, e.g. changes or modifications, are only permitted with the express written permission of
SMA Solar Technology AG. Unauthorized alterations will void guarantee and warranty claims and in most cases
terminate the operating license. SMA Solar Technology AG shall not be held liable for any damage caused by such
changes.
Any use of the product other than that described in the Intended Use section does not qualify as appropriate.
The enclosed documentation is an integral part of this product. Keep the documentation in a convenient place for
future reference and observe all instructions contained therein.
Only persons fulfilling all of the skills for the target group are permitted to work on or with the product.
All work on the product must only be performed using appropriate tools and in compliance with the ESD protection
regulations.
Suitable personal protective equipment is to be worn by all persons working on or with the product.
Unauthorized persons must not operate the product and must be kept at a safe distance from the product.
The service platforms and the protection roofs for the inverter compartment and transformer compartment must be open
during operation. All other doors and covers must be closed during operation.
The product must not be opened when it is raining or when humidity exceeds 95%.
The product must not be operated with any technical defects.
The type label must remain permanently attached to the product.
System ManualMVPS22JP-SH-en-1114
Page 15
SMA Solar Technology AG
2 Safety
2.2 Safety Information
This section contains safety information that must be observed at all times when working on or with the product. To
prevent personal injury or property damage and to ensure long-term operation of the product, read this section
carefully and observe all safety information at all times.
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the product. Touching live components results in death or serious
injury due to electric shock.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch any live components.
• Observe all warning messages on the product and in the documentation.
• Observe all safety information of the module manufacturer.
• After switching off the inverter, wait at least 15minutes before opening it to allow the capacitors to discharge
completely (see Section7.4, page100).
Danger to life from electric shock due to live DC cables
DC cables connected to PV modules that are exposed to sunlight carry live voltage. Touching live cables results in
death or serious injury due to electric shock.
• Prior to connecting the DC cables, ensure that the DC cables are voltage-free.
• Wear suitable personal protective equipment for all work on the device.
Danger to life from electric shock due to ground fault
If a ground fault has occurred, parts of the PV power plant that are supposedly grounded may in fact be live.
Touching incorrectly grounded parts of the PV power plant results in death or serious injuries from electric shock.
• Before working on the PV power plant, ensure that no ground fault is present.
• Wear suitable personal protective equipment for all work on the device.
Danger to life from electric shock due to damaged product
Operating a damaged product can lead to hazardous situations that result in death or serious injuries due to electric
shock.
• Only operate the product when it is in a flawless technical condition and safe to operate.
• Check the product regularly for visible damage.
• Make sure that all external safety equipment is freely accessible at all times.
• Make sure that all safety equipment is in good working order.
• Wear suitable personal protective equipment for all work on the product.
System Manual 15MVPS22JP-SH-en-11
Page 16
2 Safety
Danger to life from electric shock even if the inverter is disconnected on the AC and DC sides
The precharge unit of the order option "QatNight" will carry live voltage even if the AC contactor and the DC
switchgear are open. Touching live components results in death or serious injury due to electric shock.
• Do not touch any live components.
• Switch off the inverter.
• After switching off the inverter, wait at least 15minutes before opening it to allow the capacitors to discharge
completely.
• Ensure that no voltage is present.
• Do not remove protective covers.
• Observe the warning messages.
• Wear suitable personal protective equipment for all work on the product.
Danger to life from electric shock from improperly operating the tap changer of the MV transformer.
SMA Solar Technology AG
Operating the tap changer of the MV transformer while energized will create a short circuit in the MV transformer.
The resulting voltages will lead to death or serious injury.
• Only operate the tap changer when the MV transformer is dead.
• Ensure the MV transformer is dead before performing any work or making any adjustments.
• All work and adjustments on the MV transformer must be performed by a duly authorized person.
• Wear suitable protective equipment for all work.
Danger to life from electric shock if the product is not locked
If the product is not locked, unauthorized persons will have access to live components carrying lethal voltages.
Touching live components can result in death or serious injury due to electric shock.
• Always close and lock the product.
• Remove the keys.
• Store the keys in a safe place.
• Ensure that no unauthorized persons have access to the closed electrical operating area.
Risk of fire due to failure to observe torque specifications on live bolted connections
Failure to follow the specified torques reduces the ampacity of live bolted connections so that the contact resistances
increase. This can cause components to overheat and catch fire.
• Ensure that live bolted connections are always tightened with the exact torque specified in this document.
• When working on the device, use suitable tools only.
• Avoid repeated tightening of live bolted connections as this may result in inadmissibly high torques.
System ManualMVPS22JP-SH-en-1116
Page 17
SMA Solar Technology AG
Danger to life from electric shock when entering the PV field
Ground-fault monitoring does not provide protection from personal injury. PV modules which are grounded with
ground-fault monitoring discharge voltage to ground. Entering the PV field can result in lethal electric shocks.
• Ensure that the insulation resistance of the PV field exceeds the minimum value. The minimum value of the
insulation resistance is: 1 kΩ.
• Before entering the PV field, switch the PV modules to insulated operation.
• Configure the PV power plant as a closed electrical operating area.
Danger to life due to arc fault caused by fault in the medium-voltage switchgear
If there is a fault in the medium-voltage switchgear, arc faults may occur during operation of the product which can
result in death or serious injuries. If arc faults occur in the medium-voltage switchgear, the pressure evacuates under
the compartment of the medium-voltage switchgear.
• Only perform work on the medium-voltage switchgear when it is in a voltage-free state.
• Only perform switching operations on the medium-voltage switchgear from the service platform.
2 Safety
• Do not touch or access the roof of the medium-voltage switchgear when medium voltage is connected.
• When switching operations are performed, all persons that are not on the service platform have to keep a safe
distance from the product.
• All work and switching operations on the medium-voltage switchgear must only be performed by qualified
persons wearing adequate personal protective equipment.
Risk of burns due to hot components
Some components of the product can get very hot during operation. Touching these components can cause burns.
• Observe the warnings on all components.
• During operation, do not touch any components marked with such warnings.
• After switching off the product, wait until any hot components have cooled down sufficiently.
• Wear suitable personal protective equipment for all work on the product.
Danger of falling from service platforms
Icy, moist or sand-covered service platforms may be slippery. Service personnel can be injured by slipping or falling
from service platforms.
• Wear suitable personal protective equipment for all work on the product.
• Before stepping onto the service platform, ensure that there is no layer of snow, ice, sand or moisture on the
platform.
• Do not keep any objects near or on the service platforms.
System Manual 17MVPS22JP-SH-en-11
Page 18
2 Safety
Risk of injury from collapse of roof and protection roofs under excessive snow load
If the maximum permissible snow load is exceeded, the roof and the protection roofs of the product may collapse or
snap. As a result, persons can be injured by falling metal parts.
• Prior to entering the service platforms, ensure that the snow load on the roof and protection roofs is not
exceeded. The maximum permissible snow load is: 2,500N/m2.
• Keep roof and protection roofs free of snow.
• Wear suitable personal protective equipment for all work on the product.
Damage to the devices due to sand, dust or moisture penetration
Sand, dust or moisture penetration can damage the devices of the MVPowerStation or impair their functionality.
• Do not open any devices during a sandstorm, precipitation or when humidity exceeds 95%.
• Only perform maintenance work when the environment is dry and free of dust.
• If the installation, maintenance or commissioning process is interrupted, mount all enclosure parts and close all
doors.
SMA Solar Technology AG
Damage to electronic components due to electrostatic discharge
Electrostatic discharge can damage or destroy electronic components.
• Observe the ESD safety regulations when working on the product.
• Wear suitable personal protective equipment for all work on the product.
• Discharge electrostatic charge by touching grounded enclosure parts or other grounded elements. Only then is
it safe to touch electronic components.
Damage to oil tray due to ice formation
In subfreezing conditions, water in the oil tray may freeze and damage the oil tray.
• Check the oil tray regularly for water. Remove water, if necessary.
2.3 Personal Protective Equipment
Always wear suitable protective equipment
When working on the product, always wear the appropriate personal protective equipment for the specific job.
The following personal protective equipment is regarded to be the minimum requirement:
☐ In a dry environment, safety shoes of categoryS3 with perforation-proof soles and steel toe caps
☐ During precipitation or on moist ground, safety boots of categoryS5 with perforation-proof soles and steel toe
caps
☐ Tight-fitting work clothes made of 100%cotton
☐ Suitable work pants
☐ Individually fitted hearing protection
☐ Safety gloves
Any other prescribed protective equipment must also be used.
System ManualMVPS22JP-SH-en-1118
Page 19
SMA Solar Technology AG
3 Product Overview
3 Product Overview
3.1 System Overview
The MVPowerStation is a complete solution for PV power plants. All devices required to convert the direct current
generated by the PV modules into alternating current and to feed this current into the medium-voltage grid are located
in the MVPowerStation. The MVPowerStation is based on a modular concept in which you can select the devices
according to the specific project requirements. The MVPowerStation may contain one or two inverters.
Figure 1: Design of the PV power plant with MVPowerStation (example)
3.2 Design of the MVPowerStation
Figure 2: Design of the MVPowerStation
Position Designation Explanation
A Protective roof The roof protects the devices from direct solar irradiation.
B Service platform The elevated position of the service platform facilitates opera-
tion of the devices and is part of the cooling concept of the
MVPowerStation.
System Manual 19MVPS22JP-SH-en-11
Page 20
3 Product Overview
Position Designation Explanation
C MV transformer The MV transformer converts the inverter output voltage to the
voltage level of the medium-voltage grid.
D Medium-voltage switchgear* The medium-voltage switchgear disconnects the MV trans-
former from the medium-voltage grid.
SMA Solar Technology AG
E Communit*
or
Control device for cascade control*
F Transformer for internal power supply* The transformer for internal power supply provides the supply
G Station subdistribution The station subdistribution contains fuse and switching elements
H Sunny Central CP-JP The SunnyCentral is a PV inverter that converts the direct cur-
* optional
The Communit contains control and communication devices.
The order option "Cascade control" allows for staggered recon-
nection of several medium-voltage switchgears after a grid failure or maintenance work.
voltage for the MVPowerStation and its devices. It is connected to the low-voltage side of the MV transformer (see circuit diagram).
for the supply voltage.
rent generated in the PV arrays into grid-compliant alternating
current.
3.3 Design of the inverter
Figure 3: Design of the Inverter
Position Designation
A Inverter cabinet
B Interface cabinet
C Connection area
System ManualMVPS22JP-SH-en-1120
Page 21
SMA Solar Technology AG
3 Product Overview
3.4 Devices of the Inverter
Figure 4: Devices of the inverter
Position Device Description
A Touch Display Different kinds of inverter data can be viewed on the touch display. The
touch display is only used to view data. The display screen is activated by
touching the touch display.
B Service interface The service interface allows access to the user interface.
C Key switch The key switch is used to switch the inverter on and off.
D DC switchgear The DC switchgear disconnects the inverter from the PV array.
E SC-COM The SC-COM is the communication unit of the inverter. The SC-COM estab-
lishes the connection between the inverter and the system operator.
F AC disconnection unit With the AC disconnection unit, the electrical connection between the in-
verter and MV transformer can be disconnected manually.
In the event of residual current, the AC disconnection unit disconnects the
connection between the inverter and MV transformer automatically.
G AC contactor The AC contactor disconnects the electrical connection between the in-
verter and MV transformer automatically.
System Manual 21MVPS22JP-SH-en-11
Page 22
A
H
F
E
D
G
B
C
3 Product Overview
3.5 Devices of the MV Transformer
The MV transformer is the link between the inverters and the medium-voltage grid.
Figure 5: Devices of the MV transformer
Position Device Description
SMA Solar Technology AG
A Contact thermometer or hermetic
protection*
B Tap changer The tap changer makes it possible to adjust the transmis-
* optional
Temperature control unit or hermetic full-protection device
of the MV transformer
sion ratio of the MV transformer.
3.6 Devices of the Medium-Voltage Compartment
Figure 6: Devices of the medium-voltage compartment (example)
Position Designation
A Fans*
B Medium-voltage switchgear
C Spatial separation between medium-voltage switchgear and low-voltage devices**
D Low-voltage transformer
E Circuit breaker for low-voltage transformers
F Outlet
System ManualMVPS22JP-SH-en-1122
Page 23
A
B
C
36kV
C
B
A
24kV
SMA Solar Technology AG
3 Product Overview
Position Designation
G Station subdistribution
H Communit or control device***
* for order option "Ambient temperature up to +50°C/+55°C"
** for order option "spatial separation"
*** for order option "Cascade control"
3.7 Devices of the Medium-Voltage Switchgear
The medium-voltage switchgear is used to disconnect the MVPowerStation from the medium-voltage grid. For the
order option "Cascade control", the middle cable panel is additionally equipped with a motor drive.
Figure 7: Devices of the medium-voltage switchgear (using the examples of a 24kV switchgear and a 36kV switchgear)
Position Designation
A Outer cable panel with load-break switch
B Center cable panel with load-break switch, in option "Cascade control" motor-driven and
equipped with auxiliary contacts on the voltage display system
C Transformer panel with circuit breaker and disconnect switch
System Manual 23MVPS22JP-SH-en-11
Page 24
3 Product Overview
SMA Solar Technology AG
3.8 Devices of the Station Subdistribution
The station subdistribution is located in the compartment of the medium-voltage switchgear and contains the circuit
breakers of the supply voltages and the optional devices. Depending on the order option of the MVPowerStation, the
number of lines and components is different in the station subdistribution.
Figure 8: Optional devices of the station subdistribution (example)
Position Designation
A Low-Voltage Meter
B Voltage and frequency monitoring relay for order option "Grid protection"
3.9 Devices of the Communit
The Communit is a central communication distribution unit in a large-scale PV power plant and incorporates
communication devices.
Figure 9: Devices of the Communit (example)
Position Designation
A Customer installation location
B SunnyWebBox
C SMAClusterController
D Patch panel
System ManualMVPS22JP-SH-en-1124
Page 25
SMA Solar Technology AG
Position Designation
E Router
F Ethernet I/O
G Network2
H Network1
3 Product Overview
3.10 Oil Tray
The oil tray collects oil which can leak from the transformer under fault conditions. The oil separators integrated in the
oil tray prevent the collected oil from leaking out of the oil tray in case the oil tray is full of rain water. The rain water is
heavier than the oil and runs through the oil separator whereas the oil remains in the oil tray.
An oil drain valve must be mounted at the oil tray in order to remove oil that has leaked into the oil tray. In order to
facilitate maintenance work, an inspection shaft must be planned at the oil drain valve.
The oil tray must be secured against floating away.
Figure 10: Positon of the oil tray
Designation
A Oil tray
System Manual 25MVPS22JP-SH-en-11
Page 26
3 Product Overview
SMA Solar Technology AG
3.11 Transformer for Internal Power Supply
The transformer for internal power supply provides supply voltage for the inverters, Communit, lighting and outlet (see
circuit diagram of the MVPowerStation).
Figure 11: Position of the transformer for internal power supply
Position Designation
A Transformer for internal power supply
3.12 Circuitry Principle of the MVPowerStation
Figure 12: Circuitry principle of the MVPowerStation (example)
Position Designation
A DC Input
B Inverter
C MV transformer
D Circuit breaker for low-voltage transformers
System ManualMVPS22JP-SH-en-1126
Page 27
SMA Solar Technology AG
Position Designation
E Medium-voltage switchgear*
F AC Output
G Low-voltage transformer*
H Station subdistribution
I External communication terminal
K Communit*
* optional
3.13 Operating and Display Elements
3.13.1 Switch in the Inverter
3.13.1.1 Key Switch
3 Product Overview
The key switch is used to switch the inverter on and off.
Figure 13: Switch positions of the key switch
Position Designation
A
B
Switch position Stop
Switch position Start
Switch position Start
If the key switch is turned to Start, a motor drive switches the DC switchgear on and the inverter switches from the
operating state "Stop" to the operating state "Grid monitoring". Provided that there is sufficient irradiation and a valid
utility grid connection, the inverter switches to feed-in operation. If there is insufficient irradiation and the input voltage
is therefore too low, the inverter remains in the operating state "Grid monitoring".
Switch position Stop
If the key switch is turned to Stop while the inverter is in the operating state "Grid monitoring", a motor drive switches
the DC switchgear off. The inverter switches to the operating state "Stop". If the key switch is turned to Stop while the
inverter is in the operating state "MPP load operation", the inverter switches to the operating state "Shutdown". Once
shutdown is complete, the AC contactor and the DC switchgear are opened automatically and the inverter switches to
the operating state "Stop".
System Manual 27MVPS22JP-SH-en-11
Page 28
3 Product Overview
3.13.1.2 AC Disconnection Unit
The AC disconnection unit disconnects the inverter from the MV transformer.
Figure 14: Switch positions of the AC disconnection unit from ABB
SMA Solar Technology AG
Position Designation Explanation
A
B Central switch position The AC disconnection unit was tripped and is open.
C
Switch position on
Switch position off
The AC disconnection unit is closed.
The AC disconnection unit is open.
3.13.1.3 DC Switchgear
The DC switchgear disconnects the inverter from the PV power plant.
Figure 15: Indicators on the DC load-break switch
Position Designation
A Spring status indicator
B Position indicator
System ManualMVPS22JP-SH-en-1128
Page 29
SMA Solar Technology AG
Position Designation
C ON button
D OFF button
3.13.2 Switch in the Station Subdistribution
Reference designations are attached to the individual devices of the station subdistribution.
Figure 16: Circuit breaker in the station subdistribution (example)
3 Product Overview
Position Designation
A Circuit breaker for fans with order option "Ambient temperature up to +50°C/+55°C"
B Circuit breaker of the supply voltage of inverter1
C Circuit breaker of the supply voltage of inverter2
D Circuit breaker of the contact thermometer or hermetic protection*
E Residual-current device and circuit breaker of the outlet
F Circuit breaker of the Communit and lighting
G Main switch of the supply voltage of the MVPowerStation
* optional
System Manual 29MVPS22JP-SH-en-11
Page 30
3 Product Overview
SMA Solar Technology AG
3.13.3 Switch on the Medium-Voltage Switchgear
Figure 17: Control panels of the medium-voltage switchgear with circuit breaker in the transformer panel (example)
Position Designation
A Grounding switch of the cable panel
B Load-break switch of the cable panel
C Three-position switch with the following switch positions: ON / OFF / GROUNDED
D Circuit breaker of the transformer panel
3.13.4 Switch on the Control Device for Cascade Control
For the order option "Cascade control", a control device for the medium-voltage switchgear is integrated in the
medium-voltage compartment. The control device enables the automatic reconnection of several medium-voltage
switchgears (see Section13.6 "Cascade Control", page211).
Figure 18: Switch and devices of the control device for order option "Cascade control"
Position Designation
A Network port
System ManualMVPS22JP-SH-en-1130
Page 31
SMA Solar Technology AG
Position Designation
B USB port
C Automatic button to activate or deactivate the automatic function
D Confirmation button
E Serial interface RS232
F Rotary switch to switch between on-site operation and remote operation
3 Product Overview
3.13.5 Touch Display
3.13.5.1 Design
The touch display is used to display instantaneous values and parameter settings. Tapping the symbols on the touch
display activates the corresponding functions. If the touch display has not been touched for five minutes, the display is
locked and the logged-in user will be logged out. By tapping the characters "S", "M" or "A", you can unlock the display
again.
The touch display is divided into three areas.
Figure 19: Design of the touch display
Position Designation Explanation
A Status info line Number of the active menu, login status and time
B Information field Area of the main menu
C Navigation line Navigation area
3.13.5.2 Explanation of Symbols
Information field
You can access the following sub-menus and screens from the information field:
Symbol Designation Explanation
E-today line graph Diagram 103: Representation of energy fed in during the current day in
kWh.
System Manual 31MVPS22JP-SH-en-11
Page 32
3 Product Overview
Symbol Designation Explanation
Bar chart Diagram 104: Representation of energy fed in during the last 14days in
kWh.
DC side Representation of the instantaneous values
• PV power in W
• Insulation resistance in Ω
• PV current in A
• PV voltage in V
• Diagram of string-current monitoring
– Diagram 132 and 133: Group currents of the individual Sunny
String‑Monitors
– Diagram 140 to 146: String currents of the individual Sunny
String‑Monitors
SMA Solar Technology AG
String-current monitoring of
the DC side
Switch on DC or AC side
closed
Switch on DC or AC side
open
Status of switches on DC or
AC side unknown
Inverter data Representation of the following inverter data:
Representation of the instantaneous values of the string-current monitoring
of the individual Sunny String-Monitors
If you see this symbol between the "DC side" symbol and the "Inverter
data" symbol, the DC switchgear is closed.
If you see this symbol between the symbol "Inverter data" and the symbol
"AC side", the AC contactor is closed.
If you see this symbol between the "DC side" symbol and the "Inverter
data" symbol, the DC switchgear is open.
If you see this symbol between the symbol "Inverter data" and the symbol
"AC side", the AC contactor is open.
If you see this symbol between the "DC side" symbol and the "Inverter
data" symbol, the switch status of the DC switchgear is not known.
If you see this symbol between the symbol "Inverter data" and the symbol
"AC side", the switch status of the AC contactor is unknown.
• Device type
• Operating state
• Symbol for utility grid menu
• Symbol for temperature display
• Symbol for fan display
System ManualMVPS22JP-SH-en-1132
Page 33
SMA Solar Technology AG
Symbol Designation Explanation
AC side Representation of the following instantaneous values:
• Active power in W
• Reactive power in VAr
• Power frequency in Hz
• AC current in A
• AC voltage in V
grid First menu page:
• Active mode of active power limitation
• Target active power in kW
• Actual active power in kW
Second menu page
• Active mode of reactive power setpoint
• Target reactive power in VAr
3 Product Overview
• Target displacement power factor cos φ
• Target excitation type of the displacement power factor
• Actual reactive power in VAr
• Actual displacement power factor cos φ
• Actual excitation type of the displacement power factor
Settings Menu
Symbol Designation Explanation
Language selection Select this symbol to open the language selection menu.
Brightness setting Select this symbol to open the brightness setting menu.
Time setting Select this symbol to open the time setting menu.
Format selection Select this symbol to open the format selection menu.
Password entry Select this symbol to open the password entry menu.
Navigation line
Symbol Designation Explanation
Back Select this symbol to go back to the previous page.
Homepage Select this symbol to go to the homepage.
System Manual 33MVPS22JP-SH-en-11
Page 34
3 Product Overview
Symbol Designation Explanation
Settings • Language selection
• Brightness setting
• Time setting
• Format selection
• Password entry
Information • OS: version of the operating system
• App.: version of the application software
• SC-COM version: SC-COM software version
• Ser.No.: inverter serial number
• Hardware: hardware version and serial number of the SC-COM
Error • ErrNo: error number
• TmsRmg: time until reconnection
• Msg: error message
SMA Solar Technology AG
• Dsc: corrective measure
Service • Telephone receiver: Contact Service.
• Tool: Contact your installer.
System ManualMVPS22JP-SH-en-1134
Page 35
SMA Solar Technology AG
3.13.6 LEDs of the SC-COM
3.13.6.1 LEDs on the Enclosure
3 Product Overview
Figure 20: LEDs on the enclosure
LED designation Status Explanation
POWER glowing green The SC-COM is supplied with voltage.
off The SC-COM is not supplied with voltage.
SD1 flashing green Read or write access to system drive
SD2 flashing green Read or write access to internal data drive
CF flashing green Read or write access to external SD memory card
H1 flashing green The SC-COM is transmitting data to Sunny Portal/FTP server.
glowing green The most recent data transmission to Sunny Portal/FTP server was
successful.
glowing red The most recent data transmission to Sunny Portal/FTP server has
failed.
off Data transmission to Sunny Portal/FTP server is deactivated.
System Manual 35MVPS22JP-SH-en-11
Page 36
3 Product Overview
LED designation Status Explanation
H2 flashing green The SC-COM is communicating with the devices connected within the
system.
glowing green Internal communication has taken place in the last five minutes.
glowing red An error has occurred in the internal communication.
off No internal communication for more than five minutes.
H3 flashing red The SC-COM is starting up.
glowing red An error has occurred in the SC-COM.
glowing green The SC-COM is ready for use.
H4 glowing green An internal memory card exists and less than 92% of its storage ca-
pacity is used.
glowing red The internal memory card is full and the oldest saved data is being
overwritten.
SMA Solar Technology AG
flashing red 92% of the storage capacity of the internal memory card is used.
H5 glowing green An external memory card exists and less than 92% of its storage ca-
pacity is used.
glowing red The external memory card is full.
flashing red 92% of the storage capacity of the external memory card is used.
off There is no external memory card.
H6 - Not assigned
H7 - Not assigned
H8 flashing green Application is running.
3.13.6.2 LEDs on the Network Port
Figure 21: LEDs on the network port
Position LED Color Status Explanation
A Speed yellow on 100 MBit data transfer rate
off 10 MBit data transfer rate
B Link/Activity green on Connection (Link) established.
flashing The SC-COM is transmitting or receiving data (Ac-
tivity).
off No connection established.
System ManualMVPS22JP-SH-en-1136
Page 37
SMA Solar Technology AG
3 Product Overview
3.13.6.3 LEDs on the Optical Fiber Terminals
The SC-COM is also available with pre-wired optical fiber connections. If the optical fibers are connected to the splice
box of the inverter, the status of the connection will be indicated by the LEDs of the SC-COM.
Figure 22: LEDs for the status of the optical fiber connection
Position LED Color Status Explanation
A Link / Activity green on Connection (Link) established.
flashing The SC-COM is transmitting or receiving data
(Activity).
off No connection established.
3.13.7 User Interface
3.13.7.1 Design of the User Interface
Via the user interface, you can set the communication of the devices of your PV power plant, configure the inverter
parameters and read off error messages and operating data.
System Manual 37MVPS22JP-SH-en-11
Page 38
A
B
C
D
E
3 Product Overview
Figure 23: Design of the user interface (example)
SMA Solar Technology AG
Position Designation
A Tree view or device view
B Status bar
C Logout button
D Navigation bar
E Content area
3.13.7.2 Tree View and Device View
You can call up data of the individual devices of your PV power plant in the tree view or the device view. Depending
on which view you have selected, the devices are sorted differently.
Symbol Designation Explanation
Tree view In the tree view, the user interface shows the devices in the or-
der in which they are connected to the data bus.
Device view In the device view, the user interface shows all devices sorted
by device type. The number shown in parentheses indicates the
number of devices of a device type.
3.13.7.3 Status Symbols
Depending on the status of the device communication, the device symbols are displayed in the tree or device view with
various status symbols.
Symbol Explanation
The inverter is ready for operation.
System ManualMVPS22JP-SH-en-1138
Page 39
SMA Solar Technology AG
Symbol Explanation
There is an error in the inverter.
An error has occurred in the communication with the inverter.
3 Product Overview
3.14 Symbols on the Product
The following gives an explanation of all the symbols found on the devices of the MVPowerStation and on the type
labels.
Symbol Designation Explanation
CE marking The product complies with the requirements of the applicable EU di-
rectives.
Protection classI All electrical equipment is connected to the grounding conductor sys-
tem of the product.
Degree of protectionIP54 The product is protected against interior dust deposits and splashing
water from all angles.
Beware of a danger zone This warning symbol indicates a danger zone. Be particularly vigilant
and cautious when working on the product.
Warning regarding dangerous voltage
Beware of hot surface The product can get hot during operation. Avoid contact during oper-
Use hearing protection The product generates loud noises. When working on the product,
Observe the documentation Observe all documentation supplied with the product.
The product operates at high voltages. All work on the product must
be carried out by qualified persons only.
ation. Allow the product to cool down sufficiently before carrying out
any work. Wear personal protective equipment such as safety
gloves.
wear hearing protection.
System Manual 39MVPS22JP-SH-en-11
Page 40
4 Transport and Mounting
SMA Solar Technology AG
4 Transport and Mounting
4.1 Safety during Transport and Mounting
Danger of crushing if raised or suspended loads tip over, fall or sway
Vibrations or careless or hasty lifting and transportation may cause loads to tip over or fall. This can result in death or
serious injury.
• Follow all national transportation standards and regulations.
• Never allow anyone to walk or stand under a suspended load at any time.
• Always transport the load as close to the ground as possible.
• Use all suspension points for transportation.
• Use the tie-down and crane points provided for transportation.
• Avoid fast or jerky movements during transport.
• Always maintain an adequate safety distance during transport.
• All means of transport and auxiliary equipment used must be designed for the weight of the load.
• Wear suitable personal protective equipment for all work on the product.
Danger to life due to choking on packaging material
Careless handling of packaging material can lead to death by suffocation.
• Remove packaging material carefully from the product.
Damage to the frame construction due to uneven support surface
If the product is set down on uneven surfaces, components may distort. This may lead to moisture and dust
penetration into the components.
• Never place the product on an unstable, uneven surface; not even for a short period of time.
• The unevenness of the support surface must be less than 0.25%.
• The support surface must be suitable for the weight of the product.
• Prior to storage, ensure that the doors of the product are tightly closed.
Danger of crushing and collision when carelessly working on the product
Carelessly working on the product could result in crushing injuries or collisions with edges.
• Wear personal protective equipment for all work on the product.
Clean the closed station container of the MVPowerStation with clear water after maritime transport.
High humidity and salt water can cause corrosion of the station container during maritime transport. It is
recommended to clean the station container with clear water prior to installation. This will inhibit the corrosion
process. Coat the affected areas in order to prevent further corrosion.
System ManualMVPS22JP-SH-en-1140
Page 41
SMA Solar Technology AG
4 Transport and Mounting
4.2 Requirements for Transport and Mounting
4.2.1 Requirements and Ambient Conditions
☐ The maximum permissible gradient of the access road is 4%.
☐ During unloading, a distance of at least 2m to neighboring obstacles must be observed.
☐ The access road must be constructed to ensure that a truck (16m long, 2.70m wide, 5m high, and a total weight
of 50t) can reach the unloading site. The curve radius of the truck must be taken into account.
☐ For trucks with several containers, the access roads and the unloading site must be designed corresponding to the
length, width, height, total weight and curve radius of the truck.
☐ The unloading site for the crane and truck must be firm, dry and horizontal.
4.2.2 Center of Gravity Marker
The center of gravity of the MVPowerStation is not in the middle of the unit. Take this into consideration when
transporting the MVPowerStation. The center of gravity depends on the device class of the MVPowerStation.
The center of gravity of the MVPowerStation is marked on the station container.
Figure 24: Center of gravity symbol
4.3 Transporting the MVPowerStation Using a Crane
Requirements:
☐ The crane and hoist must be suitable for the weight.
☐ The hoist must be properly connected to the crane.
☐ The factory-fitted transport lock on the devices of the MVPowerStation must be in place.
☐ The doors of the MVPowerStation must be closed.
Procedure:
1. Attach the hoist to the four upper or lower lifting lugs on the
MVPowerStation. When the hoist is attached to the lower
lifting lugs, you should protect the enclosure of the
MVPowerStation from mechanical damage by the hoist.
2. Ensure that the hoist is attached correctly.
3. Slowly raise the MVPowerStation and check if the hoist is taut evenly.
4. If the MVPowerStation is not level when raised, lower it back down to the ground.
5. Make sure that the hoist is attached so that the MVPowerStation will be lifted level. If necessary extend the
chains of the hoist with shackles, so that the MVPowerStation is in a horizontal position.
6. Raise the MVPowerStation slightly.
System Manual 41MVPS22JP-SH-en-11
Page 42
4 Transport and Mounting
7. Transport the MVPowerStation to its final position as close to the ground as possible.
8. If the MVPowerStation is to be transported directly to the mounting location and installed on the support surface,
attach the support feet (see Section4.6, page43).
9. Set the MVPowerStation down. The support surface must be suitable for the weight of the MVPowerStation in
accordance with the requirements (see "Information on Transport and Mounting of the MVPowerStation").
SMA Solar Technology AG
4.4 Transporting the MVPowerStation by Truck, Train and Ship
Requirements:
☐ The means of transport must be equipped with container locks.
☐ The doors of the MVPowerStation must be closed.
☐ The factory-fitted transport lock on the devices of the MVPowerStation must be in place.
☐ If transported by train, the MVPowerStation must be loaded on railroad cars with shock absorbers.
Procedure:
1. Load the MVPowerStation onto the means of transport (see Section4.3, page41).
2. Use container locks to secure the MVPowerStation by at least four upper or lower corner castings.
4.5 Removing the Supplied Mounting Material from the MVPowerStation
Upon delivery, the supplied mounting material is located in the compartment of the medium-voltage switchgear.
Procedure:
1. Temporarily store the MVPowerStation in a suitable location.
2. Open the medium-voltage switchgear compartment (see Section12.1, page159).
3. Set up the medium-voltage switchgear service platform (see Section12.2, page162).
4. Remove the required mounting material from the medium-voltage switchgear compartment (see Section16.1
"Scope of Delivery", page249).
5. Remove the medium-voltage switchgear service platform.
6. Close the medium-voltage switchgear compartment (see Section12.1, page159).
System ManualMVPS22JP-SH-en-1142
Page 43
SMA Solar Technology AG
4 Transport and Mounting
4.6 Attaching the Support Feet to the MVPowerStation
The MVPowerStation must be installed on the support surface with six support feet. The support feet for the station
container can be found in the accessories kit in the medium-voltage switchgear compartment. The four outer support
feet can be attached to the MVPowerStation using the T-head bolts. The center support feet must be tightened. The
height of the standard support feet is adjustable (if necessary). After the mounting process of the MVPowerStation is
completed, the height of the standard support feet can no longer be adjusted.
Requirement:
☐ To attach the support feet to the MVPowerStation, you must place the station on temporary platforms (e.g. crane
support plates). The platforms must be at least 450mm high.
Figure 25: Attachment of the support feet during unloading of the MVPowerStation at the mounting location
Required mounting material (included in the scope of delivery):
☐ Six support feet for the MVPowerStation
System Manual 43MVPS22JP-SH-en-11
Page 44
2
1
4 Transport and Mounting
SMA Solar Technology AG
Figure 26: Dimensions of the support feet
Position Designation
A Outside standard support foot with a height of 350mm (adjustable height ±20mm)
B Central standard support foot with a height of 350mm (adjustable height ±20mm)
C Outside support foot* with a height of 368mm (non-adjustable height)
D Central support foot* with a height of 368mm (non-adjustable height)
* For the order option "Earthquake and storm qualification"
Procedure:
1. Insert the T-head bolt of the support foot in the corner casting
of the station container and twist to lock.
System ManualMVPS22JP-SH-en-1144
Page 45
SMA Solar Technology AG
2. Tighten the nut of the T-head bolt (width across flats: 36mm).
3. Repeat steps 1 and 2 for each support foot with T-head bolt.
4. Align the stud bolt of the support foot for the side of the
container outwards, guide it into the middle fitting of the station
container and mount it with the nut (width across flats: 30mm).
5. Mount the second middle support foot as described in step 4.
6. Adjust the height of the support feet using the bottom nuts
(width across flats: 36mm). The height of the support foot must
be at least 350mm. Align the support foot so that the base
plate is flush with the MVPowerStation.
4 Transport and Mounting
7. Set the height of the support feet of the MVPower Station so that the device is horizontal and its weight is equally
distributed over all support feet.
4.7 Mounting the MVPowerStation
The MVPowerStation can be mounted and anchored on flagstones, pile-driven steel pillars, strip foundations,
concrete slabs or concrete pillars (see "Information on Transport and Installation of the MVPowerStation"). The
customer is responsible for mounting and anchoring the MVPowerStation on the support surface. Which foundation
option is selected is at the discretion of the customer. If the mounting location is subject to strong winds, the support feet
should be anchored to the foundation.
For the option "Seismic and Storm Qualification", stricter requirements apply to the foundations. The MVPowerStation
comes with special support feet, which need to be integrated into the concrete foundation. Furthermore, the protection
roofs for the inverter compartment and transformer compartment must be removed. For further information on the
installation for the option "Seismic and storm qualification," consult the transport and installation conditions.
The cooling concept of the MVPowerStation uses the service platforms to dissipate the warm exhaust air. For this
reason, the MVPowerStation must be operated with open service platforms. To enable this, support feet must be
attached to the service platforms. The support feet for the service platforms can be found in the accessory kit in the
medium-voltage switchgear compartment. Mounting of the service platforms is the responsibility of the customer.
Mounting of the service platforms must be completed prior to commissioning.
Hand rails for the service platforms of the MVPowerStation
The service platforms are provided by SMASolarTechnologyAG.
Local regulations for hand rails must be observed. Hand rails for the service platforms are not included in the
scope of delivery of the MVPowerStation and must be provided on-site.
System Manual 45MVPS22JP-SH-en-11
Page 46
4 Transport and Mounting
Figure 27: Position of the support feet
SMA Solar Technology AG
Requirements:
☐ The requirements for the foundation must be complied with (see "Information on Transport and Mounting of the
MVPowerStation").
☐ The pea gravel ground and the mounting option must be prepared (see "Information on Transport and Mounting
of the MVPowerStation").
☐ The support feet must be attached to the MVPowerStation (see Section4.6, page43).
☐ The length of the support feet on the MVPowerStation must be at least 350mm.
Risk of injury due to inappropriate transport of the oil tray
The oil tray for the MVPowerStation is very heavy. If you try to move the oil tray without auxiliary equipment, you
may suffer injury.
• Only transport the oil tray using a suitable means of transport.
• Using a suitable means of transport, transport the oil tray as close to the ground as possible.
Risk of injury if heavy service platforms are lowered too fast
The service platforms of the MVPowerStation are very heavy. If service platforms are folded down too fast or
dropped, persons could be injured.
• Have at least two people pull each service platform forwards and down.
• Always wear suitable protective equipment.
Damage to oil tray due to water undermining
In case of strong rain, the oil tray can be undermined and float away.
• Secure the oil tray against floating away.
Position of the cables when mounting the MVPowerStation
To prevent damage to the previously laid cables during mounting of the MVPowerStation, the cables must be
laid on the foundation as flat as possible.
System ManualMVPS22JP-SH-en-1146
Page 47
SMA Solar Technology AG
Procedure:
1. Use a crane to set the oil tray down in the appropriate position
so that it is aligned underneath the transformer compartment of
the MVPowerStation. Take the heavy weight of the oil tray
into account.
2. Transport the MVPowerStation to the mounting location (see Section4.3, page41).
3. Set the MVPowerStation down on the support surface, and attach it if necessary.
4. Adjust the height of the oil tray to the height of the MVPowerStation. Secure the oil tray against floating away if
necessary.
5. Unscrew the nuts from the stud bolts of the support feet for the service platforms and remove them together with
the washers.
4 Transport and Mounting
6. Guide the stud bolts of the support feet for the service platform
into the working platform fittings and mount each of them with
a washer and nut (width across flats: 16mm).
7. Remove the cable ties from the fuse of the locking mechanism.
8. Remove the locking mechanism fuse.
System Manual 47MVPS22JP-SH-en-11
Page 48
4 Transport and Mounting
9. Turn the locking mechanism of a platform to the vertical
position so that the platform can be opened. Use a box
wrench (width across flats: 22mm).
10. Have at least two people pull the service platform forwards
and down. Use the handles on the service platforms.
SMA Solar Technology AG
11. After opening the protective roof, tighten the retainer on the
roof and the container.
12. Repeat steps 5 to 11 for the service platform and the protection roof of the MV transformer compartment.
System ManualMVPS22JP-SH-en-1148
Page 49
SMA Solar Technology AG
5 Installation
5 Installation
5.1 Safety during Installation
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the product. Touching live components results in death or serious
injury due to electric shock.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch any live components.
• Observe all warning messages on the product and in the documentation.
• Observe all safety information of the module manufacturer.
• After switching off the inverter, wait at least 15minutes before opening it to allow the capacitors to discharge
completely (see Section7.4, page100).
Danger to life from electric shock due to ground fault
If a ground fault has occurred, parts of the PV power plant that are supposedly grounded may in fact be live.
Touching incorrectly grounded parts of the PV power plant results in death or serious injuries from electric shock.
• Before working on the PV power plant, ensure that no ground fault is present.
• Wear suitable personal protective equipment for all work on the device.
Danger to life from electric shock due to live DC cables
DC cables connected to PV modules that are exposed to sunlight carry live voltage. Touching live cables results in
death or serious injury due to electric shock.
• Prior to connecting the DC cables, ensure that the DC cables are voltage-free.
• Wear suitable personal protective equipment for all work on the device.
Risk of fire due to failure to observe torque specifications on live bolted connections
Failure to follow the specified torques reduces the ampacity of live bolted connections so that the contact resistances
increase. This can cause components to overheat and catch fire.
• Ensure that live bolted connections are always tightened with the exact torque specified in this document.
• When working on the device, use suitable tools only.
• Avoid repeated tightening of live bolted connections as this may result in inadmissibly high torques.
System Manual 49MVPS22JP-SH-en-11
Page 50
5 Installation
Danger to life from electric shock when entering the PV field
Ground-fault monitoring does not provide protection from personal injury. PV modules which are grounded with
ground-fault monitoring discharge voltage to ground. Entering the PV field can result in lethal electric shocks.
• Ensure that the insulation resistance of the PV field exceeds the minimum value. The minimum value of the
insulation resistance is: 1 kΩ.
• Before entering the PV field, switch the PV modules to insulated operation.
• Configure the PV power plant as a closed electrical operating area.
Danger of falling from service platforms
Icy, moist or sand-covered service platforms may be slippery. Service personnel can be injured by slipping or falling
from service platforms.
• Wear suitable personal protective equipment for all work on the product.
• Before stepping onto the service platform, ensure that there is no layer of snow, ice, sand or moisture on the
platform.
SMA Solar Technology AG
• Do not keep any objects near or on the service platforms.
Damage to the devices due to sand, dust or moisture penetration
Sand, dust or moisture penetration can damage the devices of the MVPowerStation or impair their functionality.
• Do not open any devices during a sandstorm, precipitation or when humidity exceeds 95%.
• Only perform maintenance work when the environment is dry and free of dust.
• If the installation, maintenance or commissioning process is interrupted, mount all enclosure parts and close all
doors.
Damage to electronic components due to electrostatic discharge
Electrostatic discharge can damage or destroy electronic components.
• Observe the ESD safety regulations when working on the product.
• Wear suitable personal protective equipment for all work on the product.
• Discharge electrostatic charge by touching grounded enclosure parts or other grounded elements. Only then is
it safe to touch electronic components.
Damage to optical fibers due to too tight bend radii
Excessive bending or kinking will damage the optical fibers.
• Observe the minimum permissible bend radii of the optical fibers.
System ManualMVPS22JP-SH-en-1150
Page 51
SMA Solar Technology AG
Damage to the product due to non-removal of transport lock
The product is provided with a special security lock for transport to protect it from moisture. Non-removal of the
transport lock can cause condensation and overheating during operation.
• Prior to installation work, ensure that all transport locks on the product are removed.
DC-side disconnection
The DC main distributions and DC subdistributions should be equipped with load-break switches or circuit
breakers. Load-break switches or circuit breakers enable trouble-free DC-side disconnection of the inverter.
5 Installation
5.2 Installation Sequence
The sequence of installation work given in this section is recommended by SMA. It is important to begin the installation
with the preparatory work and the grounding connection. Therefore, SMA recommends that you adhere to this
sequence to avoid problems during installation. Some of the installation work will only need to be carried out for
certain options.
Task See
Removing the transport locks from the inverter compartment Section5.3.1, page52
Removing the desiccant bag Section5.3.5, page56
Removing the transport locks in the MV transformer compartment Section5.3.3, page54
Working in the compartment of the medium-voltage switchgear Section5.3.4, page55
Inserting the cables Section12.4, page167
Grounding the station container Section5.4, page57
Installing the AC connection
Depending on the order option, the AC connection will be installed on the
medium-voltage switchgear or the MV transformer.
Installing the communication
Depending on the order option, the communication will be connected in the
Communit or in the inverter.
Connecting the communication in the inverter with optical fibers Section5.7.2.1, page65 or
Connecting the communication in the inverter with copper cables Section5.7.1.2, page64
Section5.5, page58
Section5.7.1, page63
Section5.7.2.2, page67
Connecting the communication in the Communit with optical fibers Section5.7.1.1, page63
Connecting the communication in the Communit with copper cables Section5.7.1.2, page64
Connecting cables for analog setpoints Section5.7.2.4, page69
Connecting the external fast stop Section5.7.2.5, page69
Connecting the remote shutdown Section5.7.2.6, page70
Connecting the external insulation monitoring alert Section5.7.2.7, page70
Connecting the monitoring of the AC contactor Section5.7.2.8, page70
System Manual 51MVPS22JP-SH-en-11
Page 52
5 Installation
Task See
Connecting the data cable of the SunnyString-Monitor Section5.7.2.9, page71
Connecting the DC cables for option "Busbar" Section5.6.1, page60
Connecting the DC cables for option "DC fuse" Section5.6.2, page62
Mounting the panels Section12.3.1.2, page164
Closing the base plate Section5.8.1, page71
SMA Solar Technology AG
5.3 Preparatory Work
5.3.1 Removing the Transport Locks from the Inverter Compartment
5.3.1.1 Loosening the Tie-Down Straps
Risk of injury when releasing the tie-down straps
Since there is tension on the tie-down straps, there is a risk of whiplash when they are released. This can result in cuts
or crushing of limbs.
• Ensure that the tie-down straps cannot whiplash.
• Observe all manufacturer instructions on handling the tie-down straps.
Procedure:
• Loosen the tie-down straps.
5.3.1.2 Removing the Air Cushion
In the MVPowerStation with two inverters, the air cushion between the inverters serves as protection during transport.
Procedure:
1. Open the inverter compartment (see Section12.1, page159).
2. Remove the air cushion.
3. Close the inverter compartment (see Section12.1, page159).
System ManualMVPS22JP-SH-en-1152
Page 53
SMA Solar Technology AG
5 Installation
5.3.1.3 Opening the Drain Orifices in the Inverter Compartment
The drain orifices in the inverter compartment are sealed with plugs and must be opened prior to installation.
Figure 28: Position of the drain orifices
Position Designation
A Drain orifice
Procedure:
1. Open the inverter compartment (see Section12.1, page159).
2. Disassemble the panels of the inverters (see Section12.3.1.2, page164).
3. Remove the plugs from the drain orifices in the floor of the station container.
4. Close the inverter compartment (see Section12.1, page159).
5.3.2 Mounting the Exhaust Duct under the Inverters
The exhaust ducts must be mounted under the inverters prior to installation. The exhaust duct is positioned on the
bottom side of the ventilation plate. The warm exhaust air from the inverters is evacuated through the exhaust ducts
under the MVPowerStation.
Procedure:
1. Open the inverter compartment (see Section12.1, page159).
2. Disassemble the panels on the inverter cabinet (see Section12.3.1.2, page164).
3. On the front side of the inverter, remove the ventilation plate from the inverter.
4. Remove the screws of the cover plate under the inverter.
5. Remove the cover plate from the station container. The cover plate and the screws are no longer needed.
6. Push the ventilation plate into the inverter.
7. Loosen the four screws on the exhaust duct on the bottom side
of the ventilation plate.
System Manual 53MVPS22JP-SH-en-11
Page 54
5 Installation
8. Pull down the exhaust duct on both sides equally to the floor of
the station.
9. Tighten the four screws on the exhaust duct.
SMA Solar Technology AG
10. Mount the panels on the inverter cabinet (see Section12.3.1.2, page164).
11. Close the inverter compartment (see Section12.1, page159).
5.3.3 Removing the Transport Lock from the MV Transformer Compartment
In the compartment of the MV transformer, the tie-down straps must be removed and the drain orifices must be opened.
Figure 29: Position of the drain orifices in the MV transformer compartment
Position Designation
A Drain orifice
Risk of injury when releasing the tie-down straps
Since there is tension on the tie-down straps, there is a risk of whiplash when they are released. This can result in cuts
or crushing of limbs.
• Ensure that the tie-down straps cannot whiplash.
• Observe all manufacturer instructions on handling the tie-down straps.
System ManualMVPS22JP-SH-en-1154
Page 55
SMA Solar Technology AG
Procedure:
1. Slightly loosen the screws of the lattice door in front of the MV
transformer.
2. Unlock and open the lattice door.
5 Installation
3. Loosen the four tie-down straps.
4. Loosen the screws on the drain orifices in front of the MV transformer and remove the covers.
5. Close the lattice door in front of the MV transformer again and fasten the screws.
5.3.4 Working in the Compartment of the Medium-Voltage Switchgear
Required mounting material (included in the scope of delivery):
☐ Base plate for cable entry
Danger to life due to choking on packaging material
Careless handling of packaging material can lead to death by suffocation.
• Remove packaging material carefully from the product.
Risk of injury when releasing the tie-down straps
Since there is tension on the tie-down straps, there is a risk of whiplash when they are released. This can result in cuts
or crushing of limbs.
• Ensure that the tie-down straps cannot whiplash.
• Observe all manufacturer instructions on handling the tie-down straps.
Procedure:
1. Open the medium-voltage switchgear compartment (see Section12.1, page159).
2. Set up the service platform of the medium-voltage switchgear (see Section12.2, page162).
3. Loosen the tie-down straps on the medium-voltage switchgear.
System Manual 55MVPS22JP-SH-en-11
Page 56
5 Installation
4. Remove the foils from the ventilation openings on the doors in the compartment of the medium-voltage switchgear:
• Remove the grids on the inside of the doors.
• Remove the foil from the ventilation openings.
• Mount the grids on the inside of the doors.
5. Remove the other foils from all remaining components.
6. Mount the base plate for the cable entry:
• Disassemble the panels on the base of the medium-voltage switchgear (see Section12.3.2.1, page166).
• Remove the screws of the cover plate under the medium-voltage switchgear.
• Remove the cover plate from the medium-voltage switchgear. The cover plate is no longer needed.
• Fasten the base plate for the cable entry above the opening for the cable entry.
• Mount the panels on the base of the medium-voltage switchgear (see Section12.3.2.1, page166).
7. Flip the working platform of the medium-voltage switchgear and lock it.
8. Close the medium-voltage switchgear compartment (see Section12.1, page159).
SMA Solar Technology AG
5.3.5 Removing the Desiccant Bags
5.3.5.1 Removing the Desiccant Bag from the Station Container
Desiccant bags are included with sea freight orders. The desiccant bags absorb moisture formed during transport.
Procedure:
1. Open the medium-voltage switchgear compartment (see Section12.1, page159).
2. Remove the desiccant bags from the station container. Remove the cable ties around the desiccant bags using
diagonal cutting pliers. The desiccant bags are to be found at the following positions:
• Between the inverters
• In the compartment of the MV transformer
• In the compartment of the medium-voltage switchgear
3. Close the medium-voltage switchgear compartment (see Section12.1, page159).
5.3.5.2 Replacing the Desiccant Bag in the Inverter
Desiccant bag in the inverter cabinet
The desiccant bag in the inverter cabinet protects the electronic components from moisture. The desiccant bag
must be replaced by a new desiccant bag included in the scope of delivery oneday before commissioning.
Procedure:
1. Remove and dispose of the desiccant bag located under the inverter bridges.
2. Remove the desiccant bag included in the scope of delivery from the foil and position it under the inverter bridges.
5.3.6 Connecting the Battery to the Control Device of the Cascade Control
In order option "Cascade control", the battery of type 12V to 24Ah is located in the medium-voltage compartment
included in the scope of delivery for the MVPowerStation. The battery must be connected to the control device.
Do not touch the battery terminals.
The battery for the control device is charged upon delivery.
• When transporting the battery, do not touch the terminals.
System ManualMVPS22JP-SH-en-1156
Page 57
A
SMA Solar Technology AG
The battery must be charged when switching on the control device
If the battery of the control device is empty, the control device and thus the medium voltage of the
MVPowerStation cannot be reconnected.
• Connect the battery to the control device at maximum two hours prior to final connection of the medium
voltage.
Requirement:
☐ The supply voltage of the control device must be present.
Procedure:
1. Unpack the battery.
2. Open the enclosure of the control device.
3. Position the battery in the enclosure and connect it (see documentation for the control device).
5.4 Installing the Grounding on the Station Container
Equipotential bonding of the oil tray
• The supplied oil tray must be connected to the grounding busbar of the MVPowerStation.
5 Installation
Figure 30: Position of the grounding to the station container
Position Designation
A Grounding busbar
Requirements:
☐ The cables must be inserted through the base plate (see Section12.4, page167). It is recommended using plastic
tubes without grooves in order to allow easier insertion of the cables.
Cable requirements:
☐ Cable cross-section: minimum 1 x 50mm2, maximum 2x95mm
☐ Cable cross-section for the grounding of the oil tray: 50mm
2
2
☐ Use copper or aluminum cables only.
Required mounting material (included in the scope of delivery):
☐ Screws
☐ Spring washers
☐ Fender washers
☐ Nuts
System Manual 57MVPS22JP-SH-en-11
Page 58
5 Installation
Additionally required mounting material (not included in the scope of delivery):
☐ Ground electrode in accordance with the grounding concept of the PV system
☐ Clean cloth
☐ Ethanol cleaning agent
☐ Terminal lugs suitable for the selected cable cross-section
☐ Non-woven abrasive
Procedure:
1. Install the ground electrodes in accordance with the applicable regulations.
2. Ensure that the required grounding resistance is achieved.
3. If insulated grounding cables are used, strip off the insulation.
4. Fit the grounding cables with terminal lugs.
5. Clean the contact surfaces of the terminal lugs with a clean cloth and ethanol cleaning agent.
6. Clean the contact surfaces with the non-woven abrasive until they have a light metallic sheen. Ensure that the
coated contact surfaces are not damaged.
7. Remove metal dust using a clean cloth and ethanol cleaning agent and do not touch the contact surfaces again
after cleaning.
SMA Solar Technology AG
8. Connect the grounding cable for grounding the oil tray to the grounding bolt of the oil tray (M13, torque:
15Nm).
9. Connect the grounding cable for grounding the oil tray to the grounding busbar of the MVPowerStation.
10. Connect the grounding cable for the ground electrode to the grounding busbar of the MVPowerStation.
11. Connect the grounding cable for the ground electrode to the ground electrode.
5.5 Installing the AC Connection
Depending on the order option, the AC connection must be installed on the medium-voltage switchgear or the MV
transformer. You must select the relevant section.
5.5.1 Installing the AC Connection on the Medium-Voltage Switchgear
Requirements:
☐ The cables must be inserted through the base plate (see Section12.4, page167). It is recommended using plastic
tubes without grooves in order to allow easier insertion of the cables.
Procedure:
• Connect the cables to the medium-voltage switchgear (see documentation for the medium-voltage switchgear).
System ManualMVPS22JP-SH-en-1158
Page 59
SMA Solar Technology AG
5 Installation
5.5.2 Installing the AC Connection on the MV Transformer
If the medium-voltage switchgear was not ordered with the MVPowerStation, the AC cables must be connected to the
MV transformer. The AC cables must be inserted through the base plate of the medium-voltage switchgear and through
the partition to the MV transformer. It is recommended using plastic tubes without grooves in order to allow easier
insertion of the cables.
Figure 31: Cable route for connection to the MV transformer
Requirement:
☐ The AC cables must be correctly inserted and attached.
Procedure:
• Connect the AC cables to the MV transformer (see MV transformer documentation).
System Manual 59MVPS22JP-SH-en-11
Page 60
5 Installation
5.6 Installing the DC Connection
5.6.1 Connecting the DC Cable to the Busbar
SMA Solar Technology AG
Figure 32: Dimensions of the DC busbar (example)
Position Designation
A Connection area DC+
B Connection area DC‒
C DC connection bracket with dimensions
Terminal lug requirements:
☐ Use tin-plated terminal lugs only.
☐ For the connection, only the supplied screws, washers and nuts must be used.
☐ The terminal lugs must be designed according to the temperature. Temperature: +95°C
☐ The width of the terminal lugs must exceed the washer diameter. Washer diameter: 32mm. This will ensure that
the defined torques are effective over the whole surface.
Cable requirements:
☐ The DC cables must be designed for the maximum PV voltage and must have double or reinforced insulation.
☐ No more than two cables must be connected to each DC terminal.
☐ Use copper or aluminum cables only.
☐ Maximum cable cross-section:400mm².
☐ Terminal lugs: M12
System ManualMVPS22JP-SH-en-1160
Page 61
SMA Solar Technology AG
Torques of the power connections:
Type of terminal lug Torque
Tin-plated aluminum terminal lug on copper bar 37Nm
Tin-plated copper terminal lug on copper bar 60Nm
Additionally required mounting material (not included in the scope of delivery):
☐ Clean cloth
☐ Ethanol cleaning agent
Procedure:
1. Disassemble the panels (see Section12.3.1.2, page164).
2. Disassemble the protective covers (see Section12.3.1.1, page163).
3. Prepare the cables for connection (see Section12.5, page172).
4. Clean the tin-plated contact surfaces in the connection area with the non-woven abrasive until they have a light
metallic sheen.
5. Clean all contact surfaces in the connection area using a clean cloth and ethanol cleaning agent and do not
touch the contact surfaces after cleaning.
5 Installation
6. Connect the cables in accordance with the circuit diagram. Only use the screws, nuts and washers included in the
scope of delivery and make sure that the screw heads always point forwards.
7. Secure the cables on the cable support rail. This will prevent the cable from being pulled out inadvertently.
8. Mount the protective covers (see Section12.3.1.1, page163).
9. Mount the panels (see Section12.3.1.2, page164).
System Manual 61MVPS22JP-SH-en-11
Page 62
5 Installation
5.6.2 Connecting the DC Cables to the Connection Brackets
SMA Solar Technology AG
Figure 33: Connection area for DC fuses (example)
Position Designation
A Connection area DC‒
B Connection area DC+
C DC connection bracket with dimensions
Terminal lug requirements:
☐ Use tin-plated terminal lugs only.
☐ For the connection, only the supplied screws, washers and nuts must be used.
☐ The terminal lugs must be designed according to the temperature. Temperature: +95°C
☐ The width of the terminal lugs must exceed the washer diameter. The diameter of the washers for M12 screws is
32mm. The diameter of the washers for M8 screws is 20mm. This will ensure that the defined torques are
effective over the whole surface.
Cable requirements:
☐ The DC cables must be designed for the maximum PV voltage and must have double or reinforced insulation.
☐ No more than two cables must be connected to each DC terminal.
☐ Use copper or aluminum cables only.
☐ Maximum cable cross-section:400mm².
☐ Terminal lugs: M12 or M8
System ManualMVPS22JP-SH-en-1162
Page 63
SMA Solar Technology AG
Torques of the power connections:
Type of terminal lug Torque
Tin-plated aluminum or copper terminal lug on aluminum bar 37Nm for M12
10Nm for M8
Additionally required mounting material (not included in the scope of delivery):
☐ Clean cloth
☐ Ethanol cleaning agent
Requirement:
☐ The reduction of DC input currents must be complied with (see Section16.3.2, page252).
Procedure:
1. Disassemble the panels (see Section12.3.1.2, page164).
2. Disassemble the protective covers (see Section12.3.1.1, page163).
3. Prepare the cables for connection (see Section12.5, page172).
4. Clean the tin-plated contact surfaces in the connection area with the non-woven abrasive until they have a light
metallic sheen.
5 Installation
5. Clean all contact surfaces in the connection area using a clean cloth and ethanol cleaning agent and do not
touch the contact surfaces after cleaning.
6. Connect the cables in accordance with the circuit diagram. Only use the screws, nuts and washers included in the
scope of delivery and make sure that the screw heads always point forwards.
7. Secure the cables on the cable support rail. This will prevent the cable from being pulled out inadvertently.
8. Mount the protective covers (see Section12.3.1.1, page163).
9. Mount the panels (see Section12.3.1.2, page164).
5.7 Connecting the Cables for Communication, Control, Supply Voltage and Monitoring
Depending on the order option and the circuitry of the network devices, e.g., in ring topology, the network devices will
be connected both in the Communit and in the inverter. Connect the communication devices in accordance with the
communication plan of the PV system. The communication plan is normally created in the course of system planning.
5.7.1 Connecting the Cables in the Communit
5.7.1.1 Connecting Optical Fibers
Additionally required material (not included in the scope of delivery):
☐ Optical fiber pigtails of the appropriate optical fiber type with subscriber connectors.
Requirements:
☐ The patch panel and the network switches must be suitable for the selected type of optical fiber.
☐ The optical fibers must be correctly inserted through the base plates of the MVPowerStation and in the Communit
(see Section12.4, page167).
System Manual 63MVPS22JP-SH-en-11
Page 64
5 Installation
Damage to eyes and skin due to visible and invisible laser radiation
The product contains class1 LED or laser components in accordance with IEC60825-1(2003). The laser beam
appears at the end of the optical fiber. Incorrect handling with laser beams can result in damage to eyes and skin.
• Do not look into the laser beam.
• Do not look at the laser beam using optical instruments.
• Do not point the laser beam at persons.
Procedure:
1. Insert the optical fibers into the patch panel from below and
splice using optical fiber pigtails (see the patch panel
documentation). Observe the maximum permissible tension
and the minimum permissible bend radii of the optical fibers.
SMA Solar Technology AG
2. Connect the patch panel to the network switch using the optical fiber patch cables included in the delivery (bend
radius: 100mm). Observe the send and receive directions of the optical fiber nodes.
5.7.1.2 Connecting the Network Cables
Network cable requirements:
☐ The network cables must be shielded and pair-twisted.
☐ The network cables must be of at least category5 (CAT5).
☐ Maximum cable length: 100m
Requirement:
☐ The network cables must be correctly inserted through the base plates of the MVPowerStation and in the
Communit (see Section12.4, page167).
Procedure:
• Connect the network cables to the network terminals in accordance with the circuit diagram.
System ManualMVPS22JP-SH-en-1164
Page 65
SMA Solar Technology AG
5.7.2 Connecting the Cable in the Inverter
5.7.2.1 Connecting Optical Fibers with Subscriber Connector
5 Installation
Figure 34: Position of the splice box
Position Designation
A Splice box
Additionally required mounting material (not included in the scope of delivery):
☐ 2 subscriber connectors
Damage to optical fibers due to too tight bend radii
Excessive bending or kinking will damage the optical fibers.
• Observe the minimum permissible bend radii of the optical fibers.
Procedure:
1. Disassemble the panels (see Section12.3.1.2, page164).
2. Insert the optical fibers in the inverter (see Section12.4.3, page171).
3. Remove the splice box from the top-hat rail:
4. Open the enclosure of the splice box.
System Manual 65MVPS22JP-SH-en-11
Page 66
5 Installation
5. Insert the optical fibers from below through the cable gland
into the splice box.
6. Mount the subscriber connectors on the optical fibers.
7. Plug the subscriber connectors into the SC-P plugs in the splice box.
8. Coil the residual glass fiber in the fiber reservoir. Observe the
permissible bend radii.
SMA Solar Technology AG
9. Screw on the enclosure of the splice box.
10. Reinstall the splice box on the top-hat rail.
11. Attach the optical fibers to the cable support rail using a cable tie. This ensures that the optical fibers cannot be
pulled out inadvertently.
12. Mount the panels (see Section12.3.1.2, page164).
System ManualMVPS22JP-SH-en-1166
Page 67
SMA Solar Technology AG
5.7.2.2 Connecting Optical Fibers via Optical Fiber Pigtail
Figure 35: Position of the splice box
5 Installation
Position Designation
A Splice box
Optical fiber requirements:
☐ The optical fiber cables must be equipped with a 50μm multi-mode optical fiber.
☐ The optical fibers must be fitted with a subscriber connector.
Damage to optical fibers due to too tight bend radii
Excessive bending or kinking will damage the optical fibers.
• Observe the minimum permissible bend radii of the optical fibers.
Procedure:
1. Disassemble the panels (see Section12.3.1.2, page164).
2. Insert the optical fibers in the inverter (see Section12.4.3, page171).
3. Remove the splice box from the top-hat rail:
4. Open the enclosure of the splice box.
System Manual 67MVPS22JP-SH-en-11
Page 68
5 Installation
5. Insert the optical fibers from below through the cable gland
into the splice box.
6. Splice the optical fibers with the optical fiber pigtails in the splice box.
7. Plug the subscriber connectors into the SC-P plugs in the splice box.
8. Coil the residual glass fiber in the fiber reservoir. Observe the
permissible bend radii.
SMA Solar Technology AG
9. Screw on the enclosure of the splice box.
10. Reinstall the splice box on the top-hat rail.
11. Attach the optical fibers to the cable support rail using a cable tie. This ensures that the optical fibers cannot be
pulled out inadvertently.
12. Mount the panels (see Section12.3.1.2, page164).
5.7.2.3 Connecting the Network Cables
Network cable requirements:
☐ The network cables must be shielded and pair-twisted.
☐ The network cables must be of at least category5 (CAT5).
☐ Maximum cable length: 100m
Procedure:
1. Disassemble the panels (see Section12.3.1.2, page164).
2. Insert the network cables (see Section12.4.3, page171).
3. Insert the network cables into the network ports.
System ManualMVPS22JP-SH-en-1168
Page 69
SMA Solar Technology AG
4. Attach the network cables to the cable support rail using a cable tie. This will prevent the network cables from
being pulled out inadvertently.
5. Mount the panels (see Section12.3.1.2, page164).
5 Installation
5.7.2.4 Connecting Cables for Analog Setpoints
If the setpoints for active power limitation and reactive power control are not transmitted via the network, there are
terminals in the inverter for connecting external setpoints. The inverter processes standard analog signals from 4.0mA
to 20.0mA.
Cable requirement:
☐ The cable used must be shielded.
Procedure:
1. Disassemble the panels (see Section12.3.1.2, page164).
2. Insert the cables (see Section12.4.3, page171).
3. Connect the cables in accordance with the circuit diagram (see Section12.6, page175).
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section12.3.1.2, page164).
5.7.2.5 Connecting the Cable for the External Fast Stop
If required, you can connect an external fast stop in accordance with the circuit diagram. The fast stop can be
operated by means of an internal or external supply voltage.
Fast stop input already assigned for order option "AC contactor"
If the MVPowerStation is delivered with order option "AC contactor", the fast stop input for the voltage and
frequency monitoring relay is already assigned. Thus, connecting an external switch is not possible.
Shortfall of external supply voltage
If there is an external supply voltage between 18.5V to 24.0V, the inverter will continue to operate in its current
operating state. If the external supply voltage falls below 18.5V, the inverter switches from the current operating
state to the operating state "Stop". If the temperature inside the inverter exceeds the temperature limit, a supply
voltage of 20.0V to 24.0V must be present to continue operating the inverter in its current operating state.
Temperature limit: +60°C
• Ensure that the external supply voltage is between 20.0V and 24.0V.
Cable requirement:
☐ The cable used must be shielded.
Additional cable requirements for internal supply voltage:
☐ Maximum cable length with cable cross-section: 130m/2.5mm²
☐ Maximum cable length with cable cross-section: 80m/1.5mm²
Requirements:
☐ A switch must be used that can interrupt the supply voltage.
Procedure:
1. Disassemble the panels (see Section12.3.1.2, page164).
2. Insert the cables (see Section12.4.3, page171).
3. Connect the cables in accordance with the circuit diagram (see Section12.6, page175).
System Manual 69MVPS22JP-SH-en-11
Page 70
5 Installation
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section12.3.1.2, page164).
SMA Solar Technology AG
5.7.2.6 Connecting the Cable for Remote Shutdown
The remote shutdown enables the inverter to be switched off from a distance, e.g. from a control room. The function of
the remote shutdown is similar to the stop function of the key switch.
Shortfall of external supply voltage
If there is an external supply voltage between 18.5V to 24.0V, the inverter will continue to operate in its current
operating state. If the external supply voltage falls below 18.5V, the inverter switches from the current operating
state to the operating state "Stop". If the temperature inside the inverter exceeds the temperature limit, a supply
voltage of 20.0V to 24.0V must be present to continue operating the inverter in its current operating state.
Temperature limit: +60°C
• Ensure that the external supply voltage is between 20.0V and 24.0V.
Procedure:
1. Disassemble the panels (see Section12.3.1.2, page164).
2. Insert the cables (see Section12.4.3, page171).
3. Connect the cables in accordance with the circuit diagram (see Section12.6, page175).
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section12.3.1.2, page164).
5.7.2.7 Connecting the Cable for the Status Report of the Insulation Monitoring
Status report
The switching status can be queried via a contact. For details of terminal assignment, see circuit diagram.
Requirements:
☐ The connected load must operate with a voltage of 230VAC or 24VDC.
☐ The connected load must draw a current of 10mA to 6A.
Procedure:
1. Disassemble the panels (see Section12.3.1.2, page164).
2. Insert the cables (see Section12.4.3, page171).
3. Connect the cables in accordance with the circuit diagram (see Section12.6, page175).
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section12.3.1.2, page164).
5.7.2.8 Connecting the Cable for the Status Report of the AC Contactor Monitoring
Status report
The switching status can be queried via a contact. For details of terminal assignment, see circuit diagram.
Requirements:
☐ The connected load must operate with a voltage of 230VAC or 24VDC.
☐ The connected load must draw a current of 10mA to 6A.
Procedure:
1. Disassemble the panels (see Section12.3.1.2, page164).
2. Insert the cables (see Section12.4.3, page171).
System ManualMVPS22JP-SH-en-1170
Page 71
SMA Solar Technology AG
3. Connect the cables in accordance with the circuit diagram (see Section12.6, page175).
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section12.3.1.2, page164).
5 Installation
5.7.2.9 Connecting the Data Cable of the SunnyString-Monitor
For an optimum supply voltage, it is recommended to connect two insulated conductors each in the terminals of the
supply voltage and of the grounding.
Cable requirements:
☐ The supply voltage and the communication connection must be combined in one cable.
☐ The cable used must be shielded.
☐ Recommended cable type: Li2YCYv(TP)4x2x0.5mm².
Procedure:
1. Disassemble the panels (see Section12.3.1.2, page164).
2. Insert the cables (see Section12.4.3, page171).
3. Connect the cables in accordance with the circuit diagram (see Section12.6, page175).
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section12.3.1.2, page164).
5.8 Completion Work
5.8.1 Closing the Base Plates on the Inverter
Requirement:
☐ All cables must be inserted in and connected to the MVPowerStation.
Procedure:
1. Insert the base plates under the inverter. The base plates must be aligned as close as possible to each other.
2. Tighten the base plates. Ensure that the enclosure openings
close tightly.
System Manual 71MVPS22JP-SH-en-11
Page 72
6 Commissioning
SMA Solar Technology AG
6 Commissioning
6.1 Safety during Commissioning
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the product. Touching live components results in death or serious
injury due to electric shock.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch any live components.
• Observe all warning messages on the product and in the documentation.
• Observe all safety information of the module manufacturer.
• After switching off the inverter, wait at least 15minutes before opening it to allow the capacitors to discharge
completely (see Section7.4, page100).
Danger to life from electric shock due to ground fault
If a ground fault has occurred, parts of the PV power plant that are supposedly grounded may in fact be live.
Touching incorrectly grounded parts of the PV power plant results in death or serious injuries from electric shock.
• Before working on the PV power plant, ensure that no ground fault is present.
• Wear suitable personal protective equipment for all work on the device.
Danger to life due to arc fault caused by fault in the medium-voltage switchgear
If there is a fault in the medium-voltage switchgear, arc faults may occur during operation of the product which can
result in death or serious injuries. If arc faults occur in the medium-voltage switchgear, the pressure evacuates under
the compartment of the medium-voltage switchgear.
• Only perform work on the medium-voltage switchgear when it is in a voltage-free state.
• Only perform switching operations on the medium-voltage switchgear from the service platform.
• Do not touch or access the roof of the medium-voltage switchgear when medium voltage is connected.
• When switching operations are performed, all persons that are not on the service platform have to keep a safe
distance from the product.
• All work and switching operations on the medium-voltage switchgear must only be performed by qualified
persons wearing adequate personal protective equipment.
Damage to the devices due to sand, dust or moisture penetration
Sand, dust or moisture penetration can damage the devices of the MVPowerStation or impair their functionality.
• Do not open any devices during a sandstorm, precipitation or when humidity exceeds 95%.
• Only perform maintenance work when the environment is dry and free of dust.
• If the installation, maintenance or commissioning process is interrupted, mount all enclosure parts and close all
doors.
System ManualMVPS22JP-SH-en-1172
Page 73
SMA Solar Technology AG
Connect and disconnect the AC voltage of the MV transformer
Only a duly authorized person is allowed to connect and disconnect the AC voltage of the MV transformer.
Statutory warranty and guarantee claims
Statutory warranty or guarantee claims can only be asserted if commissioning was carried out by
SMASolarTechnologyAG or providing that the fully completed and signed "Commissioning Report for
MVPowerStation" is on file at SMASolarTechnologyAG.
6.2 Requirements for Commissioning
General requirements:
☐ None of the devices must display any damage.
☐ All devices must be correctly installed.
☐ All devices must be properly grounded.
☐ All foils in medium-voltage compartment must be removed.
☐ All transport locks and desiccant bags must be removed.
☐ The service platforms must be installed.
6 Commissioning
☐ The protection roofs must be fully extended.
☐ All devices must be properly closed and sealed.
☐ All doors and locks must function properly.
☐ All labels and signs must be in place.
☐ All cables must be correctly routed and connected to the MVPowerStation.
DC side:
☐ The PV array must be checked.
☐ All cables of the PV array must be correctly connected to the SunnyString-Monitors.
☐ All cables of the SunnyString-Monitors must be correctly connected to the inverters.
☐ The polarity of the strings must be checked.
☐ The DC voltages must be checked.
☐ An insulation measurement must be carried out and recorded.
☐ All fuses of the SunnyString-Monitors must be removed.
☐ At least 50% of the PV modules of the entire PV system must be installed and connected to the inverter. The
minimum power for commissioning may deviate depending on the country. Please contact your project manager
for the exact power value.
AC side:
☐ The AC circuit breaker must be opened.
☐ The MV transformer must be connected to the utility grid.
☐ The MV transformer must not have any oil leaks.
☐ The pressure gauge for the SF6 gas on the medium-voltage switchgear gas must be in the green range.
☐ The accessories for the medium-voltage switchgear must be available.
Communication:
☐ Communication connections and the supply voltage must be connected and checked.
Documentation:
☐ All documentation must be available.
System Manual 73MVPS22JP-SH-en-11
Page 74
A
6 Commissioning
☐ SMA Solar Technology AG must have access to the safety documentation for the construction site.
☐ All system documentation such as cabling diagrams must be present.
SMA Solar Technology AG
6.3 Visual Inspection and Mechanical Test
6.3.1 Sequence for Visual Inspection and Mechanical Test
Procedure See
1. Ensure that the minimum clearances are complied with. Technical Information "Informa-
tion on Transportation and Installation of the MV Power Station"
2. Ensure that the grounding busbar has been professionally connected to
the external grounding system.
3. Ensure that the cables for communication, control, supply voltage and
monitoring are correctly connected.
4. Ensure that the high-current contacts made on the installation site are cor-
rectly connected.
5. Ensure that the high-current contacts made at the factory are correctly
connected.
6. Ensure that the connection busbars do not show any discoloration.
If the connection busbars show any discoloration, contact the Service. (see Section17 "Contact", page256
7. Ensure that the settings of the switching units are made correctly. Section6.3.3.1, page76
8. Ensure that all connectors are correctly connected. Section6.3.3.2, page76
Section6.3.2.1, page74
Section6.3.2.3, page75
Section6.3.2.4, page75
Section6.3.2.2, page75
)
6.3.2 MVPowerStation
6.3.2.1 Checking the Grounding
Figure 36: Grounding of the station container
Position Designation
A Grounding busbar
System ManualMVPS22JP-SH-en-1174
Page 75
SMA Solar Technology AG
Procedure:
1. Ensure that all metal devices of the MVPowerStation have been professionally connected to the grounding
busbar (see circuit diagram of the MVPowerStation).
2. Ensure that the grounding busbar has been professionally connected to the external grounding system.
6 Commissioning
6.3.2.2 Checking the High-Current Contacts Made at the Factory
High-current contacts made at the factory
High-current contacts made at the factory are marked off. Providing that the marking is not damaged and runs in
a straight line across the bolted connection, this means that the torque complies with the specifications.
Procedure:
• Check whether the high-current contacts made at the factory
are correctly marked off.
If a high-current contact is not correctly marked off, release the high-current contact, tighten with the required
torque and mark off again.
6.3.2.3 Checking the Connections of the Cables for Communication, Control Supply Voltage and Monitoring
Test Point Tasks
Cables Ensure that the cable type and cross-section, the number of cables and the labeling comply
with the specifications in the schematic diagram.
Cable connection Ensure that the cable connection complies with the specifications in the schematic diagram.
If no external fast stop is to be installed, ensure that the terminals are wired with a jumper
wire in accordance with the schematic diagram.
Cable insulation Make sure that the insulation of the cables is correctly stripped. The insulation must not pre-
vent the contact with the terminal.
Bootlace ferrules Ensure that the bootlace ferrules are correctly crimped and that no stranded wires are visible.
Cable support rails Ensure that the cables are adequately attached to the cable support rails.
Shield clamping saddles
Ensure that the contact between the cable shield and the shield bus is intact.
6.3.2.4 Checking the High-Current Contacts Made at the Installation Site
Test point Tasks
Cables Ensure that the cable type and cross-section, the number of cables and the labeling comply
with the specifications in the schematic diagram.
System Manual 75MVPS22JP-SH-en-11
Page 76
6 Commissioning
Test point Tasks
High-current contact Check whether the high-current contacts established at the installation site are tightened to
the correct torque. If the torque is not correct, release and clean the high-current contact and
tighten with the required torque.
Terminal lugs Ensure that the terminal lugs are crimped edge to edge.
Cable support rails Ensure that the cables are adequately attached to the cable support rails.
SMA Solar Technology AG
6.3.3 Sunny Central
6.3.3.1 Checking the Settings of the Switching Units
Test Point Tasks
AC circuit breaker Ensure that the settings comply with the specifications in the schematic diagram.
GFDI
Hygrostat
6.3.3.2 Checking the Connectors
Test Point Tasks
Connectors on the CAN bus Ensure that all connectors are securely in place.
Connectors on the SC20cont
Connectors on the inverter bridge
Connectors on the communication unit
Connectors on the hub
Connectors on the router
6.4 Connection and Measurement
6.4.1 Sequence for Connection and Measurement
Procedure See
Use the tap changer on the MV transformer to adjust the voltage of the utility
grid.
Section6.4.2, page77
Switch on the transformer panel and the ring circuit of the medium-voltage
switchgear.
Measure the voltages on the primary and secondary sides of the MV transformer
and record the values in the commissioning report.
Ensure that the supply voltage is within the permissible voltage range of the inverter of −10% to +15%.
Check the output voltage of the inverter. Section6.4.5, page77
Check the DC voltage. Section6.4.6, page78
Section7.8, page102
Section6.4.3, page77
Section6.4.4, page77
System ManualMVPS22JP-SH-en-1176
Page 77
SMA Solar Technology AG
Procedure See
Mount the protective covers. Section12.3.1.1, page163
Mount the panels. Section12.3.1.2, page164
Switch on the supply voltage and the AC disconnection unit. Section6.4.7, page78
6 Commissioning
6.4.2 Adjusting the Transmission Ratio of the MV Transformer
Requirement:
☐ No voltage must be present at the MV transformer.
Procedure:
• Use the tap changer on the MV transformer to set the nominal voltage of the medium-voltage side. Set the
voltages of the MV transformer during configuration.
6.4.3 Checking the Voltages of the MV Transformer
Requirement:
☐ The MV transformer must be connected (see Section7.8, page102).
Procedure:
• Measure the voltage at the low-voltage side and record it in the commissioning report. Set the voltages of the MV
transformer during configuration.
6.4.4 Checking and Connecting the Supply Voltage
1. Ensure that the voltage on the primary side is within the permissible voltage range of the transformer for internal
power supply.
2. Switch on the transformer circuit breaker of the transformer for internal power supply.
3. Check whether the supply voltage is within the permissible voltage range of the inverter.
If the supply voltage deviates from the permissible voltage range of the inverter, adjust the transmission ratio of the
transformer for internal power supply.
6.4.5 Checking the Output Voltage of the Inverter
1. Use a rotating field instrument to measure whether a right-hand rotating magnetic field is connected at the AC
connection brackets.
If a left-hand rotating magnetic field is detected, two line conductors must have been wrongly connected.
• Swap the connections L1 and L3.
2. Check whether the AC voltage is approximately the same as the nominal voltage of the inverter. Measure the AC
voltage between the terminals at the AC connection brackets and record in the commissioning report.
If the AC voltage differs significantly from the nominal voltage of the inverter, the transformation ratio of the MV
transformer must be adjusted by a duly authorized person.
System Manual 77MVPS22JP-SH-en-11
Page 78
6 Commissioning
SMA Solar Technology AG
6.4.6 Checking the DC Voltage
Danger to life due to electric arcs if measuring device is not connected correctly
If the measurement points are incorrectly contacted, this can cause an electric arc. Electric arcs can result in death or
serious injury.
• Select the appropriate measurement range on the measuring device.
• Wear suitable personal protective equipment for all work on the device.
• Select correct measurement points.
Damage to the inverter due to excessive DC voltages
The DC voltage of the PV array must not exceed the maximum voltage of the inverter.
• Make sure the maximum voltage is no more than 1,000V.
Procedure:
1. Measure the DC voltage for each input and record it in the commissioning report. Use the DC+ and DC‒
connection brackets as measuring points.
2. Check that the DC voltages do not exceed the maximum DC voltage of the inverter.
If the DC voltages differ from one another or exceed the maximum DC voltage, make sure that the cabling of the
PV modules has been configured in accordance with the circuit diagram.
3. Make sure that the polarity of each input is correct.
4. Measure the DC voltage for each non-grounded pole to ground and record in the commissioning report. Use the
connection brackets of the ungrounded terminal and the grounding busbar as check points.
☑ There is a measurable voltage drop.
✖ There is no measurable voltage drop?
A ground fault is present.
• Eliminate the ground fault.
6.4.7 Switching On the Supply Voltage and the AC Disconnection Unit
1. Close the measurement and disconnect terminals.
System ManualMVPS22JP-SH-en-1178
Page 79
SMA Solar Technology AG
2. Switch on the circuit breaker of the grid monitoring.
3. Switch on the AC circuit breaker.
6 Commissioning
4. Switch the supply voltage circuit breaker on.
☑ The electronic components of the inverter switch on.
☑ The fans switch on and start drawing air in through the air intake vents.
✖ The fans do not switch on?
• Contact the Service (see Section17, page256).
6.5 Configuration
6.5.1 Checking the Settings of the Protective and Control Devices
The transformer panel of the medium-voltage switchgear is equipped with a circuit breaker and a protective
device.The protective device must be configured in accordance with the voltage level and the size of the MV
transformer. Contact your contact person at SMA Solar Technology AG to obtain the document "MVSG-Protection
Relay Settings" in which the default settings and explanations are stated. The final settings of the protective device must
be made upon agreement with the electric utility company. The operator of the PV power plant is responsible for the
correctness of the settings.
System Manual 79MVPS22JP-SH-en-11
Page 80
6 Commissioning
Procedure:
1. Set the protective device (see document "MVSG - Protection Relay Settings" and documentation of the mediumvoltage switchgear). Observe the maximum current values on the medium-voltage side.
SMA Solar Technology AG
Medium-voltage
switchgear
Manufacturer of the
medium-voltage
switchgear: Schneider
Electric
Type of the medium-voltage switchgear: FBX
Protective device:
Woodward WIC1-2PE
Manufacturer of the
medium-voltage
switchgear: Schneider
Electric
Grid voltage
[kV]
10 31.75 40.01 50.81
11 28.87 36.37 46.19
12 26.46 33.34 42.34
13.2 24.06 30.31 38.49
13.8 23.01 28.99 36.82
15 21.17 26.67 33.87
20 15.88 20.01 25.40
22 14.43 18.19 23.09
23 13.81 17.40 22.09
24.94 12.73 16.04 20.37
30 10.58 13.34 16.94
Current on the high-voltage side of the MV transformer including 10% overload [A]
500kVA 630kVA 800kVA
Type of the medium-voltage switchgear:
FLUSARC
Protective device: VIP
45
Medium-voltage
switchgear
Manufacturer of the
medium-voltage
switchgear: Schneider
Electric
Type of the medium-voltage switchgear: FBX
Protective device:
Woodward WIC1-2PE
31.5 10.08 12.70 16.13
33 9.62 12.12 15.40
Grid voltage
[kV]
10 63.51 80.02 101.61
11 57.74 72.75 92.38
12 52.92 66.68 84.68
13.2 48.11 60.62 76.98
13.8 46.02 57.99 73.63
15 42.34 53.35 67.74
20 31.75 40.01 50.81
Current on the high-voltage side of the MV transformer including 10% overload [A]
1000kVA 1260kVA 1600kVA
22 28.87 36.37 46.19
23 27.61 34.79 44.18
System ManualMVPS22JP-SH-en-1180
Page 81
SMA Solar Technology AG
6 Commissioning
Medium-voltage
switchgear
Manufacturer of the
medium-voltage
switchgear: Schneider
Electric
Type of the medium-voltage switchgear:
FLUSARC
Protective device: VIP
45
2. For order option "Grid protection", check the settings of the voltage and frequency monitoring relay and correct
them, if necessary (see documentation of the voltage and frequency monitoring relay).
3. For order option "Cascade control", set the time delay in the control device according to the specifications of the
grid operator (see documentation of the control device).
Grid voltage
[kV]
24.94 25.46 32.09 40.74
30 21.17 26.67 33.87
31.5 20.16 25.40 32.26
33 19.25 24.25 30.79
Current on the high-voltage side of the MV transformer including 10% overload [A]
1000kVA 1260kVA 1600kVA
6.5.2 Configuring the Network Settings on the Computer
Before your computer can communicate with the inverter, you must set the computer to the network settings of the
inverter. The network settings include the IP address, subnet mask, gateway and DNS server address.
The communication interface of the inverter has three LAN interfaces to the connected nodes. The IP address to be
configured in your computer depends on whether the computer is connected to the service interface of the inverter, the
control network or the monitoring network.
Network Default IP address
LAN1: Service interface of the inverter 192.168.100.2*
LAN2: Control network 172.24.1.51
LAN3: Monitoring network 172.16.1.51
* This IP address cannot be changed.
Administrator rights in the operating system
To commission the communication unit, you need to have the appropriate administrator rights to change the
network settings of the computer.
• Contact your network administrator if you are uncertain about administrator rights.
Procedure:
1. Note down the IP address of the computer.
2. Adapt the IP address of the computer to the address range of the communication unit.
6.5.3 Information on Integrating the Inverter into a Local Network
Protecting the local network from cyber attacks
• If the local network is to be accessible via the Internet, you can set up port forwarding via your router or
configure a VPN. Using a VPN is recommended.
• Protect the local network from cyber attacks by means of suitable safety measures such as setting up a
firewall and allocating secure passwords.
System Manual 81MVPS22JP-SH-en-11
Page 82
6 Commissioning
Using a static IP address is recommended. You can select the IP address yourself. Use the address range which is
available to your router. If necessary, refer to the router manual.
If you are using a Power Plant Controller for the automatic control of your PV power plant, a dynamic IP address with
DHCP is not possible.
For further information on this subject, see the Technical Information "System Communication in Large-Scale PV Power
Plants" at www.SMA-Solar.com.
SMA Solar Technology AG
6.5.4 Configuring the Inverter for a Static Network
You can configure the IP address of the inverter for the control network and the monitoring network via the user
interface. Alternatively, you can also change the network settings of the inverter via the XML file custom.xml (see
Section6.5.14, page92).
Procedure:
1. Log into the user interface (see Section12.8.1, page177).
2. Select SunnyCentral > Settings > Network.
3. In the field IP address, enter the static IP address that you want to use to access the inverter in the local network.
4. Enter the subnet mask of your network in the field Subnet mask.
5. Enter the gateway IP address of your network in the field Gateway address. Usually, the IP address of the
router has to be entered here.
6. Enter the IP address of the DNS server (Domain Name System) in the field DNS server address. Usually, the IP
address of the router has to be entered here.
7. Select the button [Save].
8. Select the button [Confirm].
6.5.5 Adjusting Network Ports
If you wish the inverter to be accessible via the Internet so that you can access it, for example, directly from
SunnyPortal, you must configure port forwarding in your router. This may require adjustment of the network ports.
For the various services, the communication unit of the inverter uses four network ports. If these ports are reserved for
other applications in your network, you can adjust the ports.
Adjusting the network ports
Check your access to the user interface before you change the setting Public virtual HTTP port on the user
interface. In most cases, the settings do not have to be changed manually, as the router automatically forwards
the queries to the correct ports via the network. Before adjusting the ports, contact your network administrator.
Unauthorized access to the inverter
If you activate the Modbus protocol, unauthorized access to the inverter will be possible. In this case, even users
without a password will be able to view the instantaneous values of supported devices or perform actions such as
changing the system time. Using a VPN is recommended.
Procedure:
1. Log into the user interface (see Section12.8.1, page177).
2. Select SunnyCentral > Settings > Network.
3. In the field Virtual public HTTP port, enter the port enabled in the router for HTTP access. Via this port, you can
access the user interface from the Internet.
4. In the field Webserver port, enter the port via which the user interface can be accessed.
5. In the field Webservice port, enter the port via which the data of the inverter is to be transmitted to SunnyPortal
and firmware updates are to be uploaded.
System ManualMVPS22JP-SH-en-1182
Page 83
SMA Solar Technology AG
6. If you would like to use the Modbus protocol, activate the box Use Modbus.
7. In the field Modbus port, enter the port to be used by the inverter when communicating via the Modbus
protocol. The default setting is port 502.
8. If you would like to use a proxy server, activate the box Use proxy server.
9. Enter the IP address and the port of the proxy server in the field Proxyserver address.
10. If you would like to use the authentication of the proxy server, activate the box Use authentication.
11. Enter the data of your proxy server in the fields User name and Password.
12. Select the button [Save].
6 Commissioning
6.5.6 Detecting New Devices
During commissioning of a PV power plant, all devices must be detected. If multiple interfaces (e.g. COM2 and
COM3) are used in the inverter, detection of new devices must be carried out separately for all interfaces.
Devices will need to be redetected if you have:
• replaced devices in your PV power plant
• removed devices from your PV power plant
• added devices to your PV power plant
Detection of the PV power plant may take several minutes
Depending on the number of devices in your PV power plant, the duration of the detection process may vary.
• If there is no indication of progress on the communication unit after three minutes, cancel the search.
• Make sure the data cable of each device is properly connected and repeat the search.
Procedure:
1. Log into the user interface (see Section12.8.1, page177).
2. Select Data > Detection.
3. In the field Total number of devices to be detected, enter the number of devices connected to the
communication unit. Hint: If you do not know the number, enter 1.
4. Select the button [Start detection].
☑ The communication unit starts detecting all inverters and displays its progress. Once all devices have been
detected, the message ### Device detection finished ### is displayed.
5. Select the button [OK].
6.5.7 Setting the Power Limitation
6.5.7.1 Setting the Active Power Ramp-Up
Parameter block
Some parameters must only be changed in the operating state "Stop". The entry will not be accepted in any other
operating state.
The inverter works up to its maximum feed-in power via a ramp. This means that the inverter gradually increases the
ratio of feed-in power per second by the value set in the parameter WGra.
Procedure:
1. Make sure the inverter is in the operating state "Stop".
2. Call up the parameter overview (see Section12.8.3, page178).
3. Set the parameter WGra to the required value.
4. Save the parameter changes (see Section12.8.4, page178).
System Manual 83MVPS22JP-SH-en-11
Page 84
6 Commissioning
SMA Solar Technology AG
6.5.7.2 Setting the Frequency-Dependent Active Power Limitation
Parameter block
Some parameters must only be changed in the operating state "Stop". The entry will not be accepted in any other
operating state.
Procedure:
1. Make sure the inverter is in the operating state "Stop".
2. Call up the parameter overview (see Section12.8.3, page178).
3. If necessary, set the parameter WCtlHzMod to CurveHys.
4. Change the parameters P-HzStr, P-HzStop and P-WGra and save (see Section12.8.4, page178).
5. Save the parameter changes (see Section12.8.4, page178).
6.5.7.3 Setting the Frequency-Independent Active Power Limitation
Operation failure of the PV power plant due to incorrectly set parameters
If the parameter settings for grid management services are incorrect, the PV power plant may not be able to meet the
requirements of the grid operator. This can involve yield losses and the inverter may have to be disconnected by the
grid operator.
• When setting the modes of grid management services, ensure that the control procedures agreed with the grid
operator are parameterized.
• If the inverter is operated with a PowerPlantController, ensure that the mode WCtlCom for active power
limitation and the mode VArCtlCom for reactive power control are selected in the inverter.
Parameter block
Some parameters must only be changed in the operating state "Stop". The entry will not be accepted in any other
operating state.
Procedure:
1. Make sure the inverter is in the operating state "Stop".
2. Call up the parameter overview (see Section12.8.3, page178).
3. Set the parameter P-WMod to the desired value.
4. Change the parameters belonging to the selected mode (see Section13.3.2, page191).
5. Use the parameter PwrMonErrMod to select the desired behavior in the absence of setpoint specifications as
follows (see Section13.3.5, page206).
6. If SubVal has been selected, enter the substitute values for normal feed-in operation and for operation outside of
normal feed-in operation.
7. In the parameter PwrMonErrTm configure the time lapse until recognition of the absence of setpoint
specifications.
8. Save the parameter changes (see Section12.8.4, page178).
System ManualMVPS22JP-SH-en-1184
Page 85
SMA Solar Technology AG
6 Commissioning
6.5.7.4 Setting Reactive Power Control
Operation failure of the PV power plant due to incorrectly set parameters
If the parameter settings for grid management services are incorrect, the PV power plant may not be able to meet the
requirements of the grid operator. This can involve yield losses and the inverter may have to be disconnected by the
grid operator.
• When setting the modes of grid management services, ensure that the control procedures agreed with the grid
operator are parameterized.
• If the inverter is operated with a PowerPlantController, ensure that the mode WCtlCom for active power
limitation and the mode VArCtlCom for reactive power control are selected in the inverter.
Avoiding electromagnetic interference emissions in large-scale PV systems
To avoid electromagnetic interference emissions in large-scale PV systems at the changeover from night mode to
feed-in operation, it is recommended using Modbus communication for setpoint in feed-in operation and night
mode.
For smaller-sized PV systems without farm control, the use of fixed setpoints for reactive power control is
recommended.
Validity of parameters in feed-in operation and in "QatNight" operation
The parameters used for these substitute values are valid in feed-in operation and in "QatNight" operation.
• Ensure that the settings of the parameters for the substitute values meet the requirements for feed-in operation
and "QatNight" operation.
Procedure:
1. Make sure the inverter is in the operating state "Stop".
2. Call up the parameter overview (see Section12.8.3, page178).
3. Set the parameter Q-VArMod to the desired value.
4. Change the parameters belonging to the selected mode (see Section13.3.3, page192).
5. Use the parameter PwrMonErrMod to select the desired behavior in the absence of setpoint specifications as
follows (see Section13.3.5, page206).
6. If SubVal has been selected, enter the substitute values for normal feed-in operation and for operation outside of
normal feed-in operation.
7. In the parameter PwrMonErrTm configure the time lapse until recognition of the absence of setpoint
specifications.
8. Save the parameter changes (see Section12.8.4, page178).
6.5.7.5 Setting Q at Night
Operation failure of the PV power plant due to incorrectly set parameters
If the parameter settings for grid management services are incorrect, the PV power plant may not be able to meet the
requirements of the grid operator. This can involve yield losses and the inverter may have to be disconnected by the
grid operator.
• When setting the modes of grid management services, ensure that the control procedures agreed with the grid
operator are parameterized.
• If the inverter is operated with a PowerPlantController, ensure that the mode WCtlCom for active power
limitation and the mode VArCtlCom for reactive power control are selected in the inverter.
System Manual 85MVPS22JP-SH-en-11
Page 86
6 Commissioning
Avoiding electromagnetic interference emissions in large-scale PV systems
To avoid electromagnetic interference emissions in large-scale PV systems at the changeover from night mode to
feed-in operation, it is recommended using Modbus communication for setpoint in feed-in operation and night
mode.
For smaller-sized PV systems without farm control, the use of fixed setpoints for reactive power control is
recommended.
Validity of parameters in feed-in operation and in "QatNight" operation
The parameters used for these substitute values are valid in feed-in operation and in "QatNight" operation.
• Ensure that the settings of the parameters for the substitute values meet the requirements for feed-in operation
and "QatNight" operation.
Procedure:
1. Make sure the inverter is in the operating state "Stop".
2. Call up the parameter overview (see Section12.8.3, page178).
3. Set the parameter QoDQ-VarMod to the desired value.
4. Change the parameters belonging to the selected mode (see Section13.3.4, page200).
5. Use the parameter PwrMonErrMod to select the desired behavior in the absence of setpoint specifications as
follows (see Section13.3.5, page206).
SMA Solar Technology AG
6. If SubVal has been selected, enter the substitute values for normal feed-in operation and for operation outside of
normal feed-in operation.
7. In the parameter PwrMonErrTm configure the time lapse until recognition of the absence of setpoint
specifications.
8. Save the parameter changes (see Section12.8.4, page178).
6.5.8 Setting Grid Monitoring and Grid Limits
6.5.8.1 Setting Grid Voltage Monitoring
Consultation prior to parameter change
The parameters of this mode can only be selected or changed after consultation (see Section17 "Contact", page256
).
Procedure:
1. Call up the parameter overview (see Section12.8.3, page178).
2. Set the parameters for monitoring the grid voltage (see Section13.1.3.1, page180).
3. Save the parameter changes (see Section12.8.4, page178).
6.5.8.2 Setting Power Frequency Monitoring
Consultation prior to parameter change
The parameters of this mode can only be selected or changed after consultation (see Section17 "Contact", page256
).
Procedure:
1. Call up the parameter overview (see Section12.8.3, page178).
2. Set the parameters for monitoring the power frequency (see Section13.1.3.2, page181).
3. Save the parameter changes (see Section12.8.4, page178).
System ManualMVPS22JP-SH-en-1186
Page 87
SMA Solar Technology AG
6 Commissioning
6.5.8.3 Activating the Manual Resume Mode
If the inverter is switched off due to a grid limit infringement, you can prevent an automatic restart of the inverter. Only
once the error has been acknowledged will the inverter switch back on. You can activate the Manual Resume Mode
for individual errors of grid limit infringement. You can read off the reason for the current restart block in the
instantaneous value ManResStt.
Procedure:
1. Call up the parameter overview (see Section12.8.3, page178).
2. To activate the Manual Resume Mode for individual disturbances, set the desired parameters to On:
Manual Resume Mode after Parameter
Disconnection due to overvoltage
Disconnection due to undervoltage
Disconnection due to overfrequency
Disconnection due to underfrequency
Disconnection due to passive islanding detection
Disconnection due to disturbance in a line conductor
3. Save the parameter changes (see Section12.8.4, page178).
ManResOvrVol
ManResUndrVol
ManResOvrFrq
ManResUndrFrq
ManResPID
ManResPLD
6.5.9 Setting the Grid Support
6.5.9.1 Setting Full and Limited Dynamic Grid Support (FRT)
1. Call up the parameter overview (see Section12.8.3, page178).
2. Set dynamic grid support with the parameter FRTEna.
3. Set operating mode for dynamic grid support with the parameter FRTMod.
4. Set deactivation delay for LVRT with the parameter FRTSwOffTm.
5. Set the scaling of the k factor for LVRT with the parameter FRTArGraNom.
6. Set the upper limit of the voltage deadband with the parameter FRTDbVolNomMax.
7. Set the lower limit of the voltage deadband with the parameter FRTDbVolNomMin.
8. In operating mode FRT_SDLWindV, set the gradient for the FRT characteristic curve in case of overvoltage with the
parameter FRT2ArGraNomHi.
9. For the operating mode FRT_SDLWindV, set the gradient for the FRT characteristic curve in case of undervoltage
with the parameter FRT2ArGraNomLo.
10. Save the parameter changes (see Section12.8.4, page178).
6.5.9.2 Setting Enable Islanding Detection
1. Call up the parameter overview (see Section12.8.3, page178).
2. Set the islanding detection with the parameter EnaAid.
3. Save the parameter changes (see Section12.8.4, page178).
System Manual 87MVPS22JP-SH-en-11
Page 88
6 Commissioning
SMA Solar Technology AG
6.5.9.3 Setting the Medium Voltage
The line-to-line voltage of the overvoltage side of the MV transformer (parameter TrfVolExlHi) has to be adapted to
the nominal conductor voltage of the utility grid (parameter VRtg). It is important that the transmission ratio of the
external MV transformer is adjusted at the same time. The undervoltage side is already preset for the specific device.
Procedure:
1. Call up the parameter overview (see Section12.8.3, page178).
2. Set the parameter TrfVolExlHi.
3. Set the parameter VRtg.
4. Save the parameter changes (see Section12.8.4, page178).
6.5.10 Setting the Remote Shutdown
1. Call up the parameter overview (see Section12.8.3, page178).
2. To activate remote shutdown, set the parameter ExlStrStpEna to On (see Section13.2.1.2, page184).
3. To deactivate remote shutdown, set the parameter ExlStrStpEna to Off (see Section13.2.1.2, page184).
4. Save the parameter changes (see Section12.8.4, page178).
6.5.11 Setting the String Current Monitoring
6.5.11.1 Detecting the SunnyCentralString-MonitorController and the Inverter
1. Log into the user interface (see Section12.8.1, page177).
2. Select Data > Detection.
3. In the field Total number of devices to be detected, enter the value 2.
4. Select the button [Start detection].
☑ The communication unit starts detecting all inverters and displays its progress. Once all devices have been
detected, the message ### Device detection finished ### is displayed.
☑ The devices have been detected.
6.5.11.2 Setting the Date and Time of the SunnyCentralString-MonitorController
1. Log into the user interface (see Section12.8.1, page177).
2. Select Data > Devices.
3. Select .
☑ A list of the existing device types appears.
4. Select SunnyCentralString-MonitorController.
5. Select the tab Instantaneous values.
6. Make sure that the date SysDt and time SysTm of the SunnyCentralString-MonitorController are correct.
If the settings are incorrect, change the parameters Dt and Tm .
6.5.11.3 Detecting the SunnyString-Monitors via the SunnyCentralStringMonitorController
It may take several minutes to detect the Sunny String-Monitors, depending on the number of devices and how far
apart they are.
System ManualMVPS22JP-SH-en-1188
Page 89
SMA Solar Technology AG
Procedure:
1. Log into the user interface (see Section12.8.1, page177).
2. Select the tab Parameters.
3. Set the parameter DevFunc to AutoDetect_SSMU.
4. Select the button [Save].
5. Select the tab Instantaneous values.
6. Select SSMUNoOf and check the number of detected Sunny String-Monitors.
Once all Sunny String-Monitors have been detected, detect them via the communication unit(see
Section6.5.11.5, page89).
If only some of the SunnyString‑Monitors have been detected, use SunnyCentralString‑MonitorController to
redetect them (see Section6.5.11.4, page89).
6 Commissioning
6.5.11.4 Redetecting the SunnyString-Monitors via the SunnyCentralStringMonitorController
1. Log into the user interface (see Section12.8.1, page177).
2. Select the tab Parameters.
3. Set the parameter DevFunc to Retry.
4. Select the button [Save].
5. Select the tab Instantaneous values.
6. Select SSMUNoOf and check the number of detected Sunny String-Monitors.
Once all Sunny String-Monitors have been detected, detect them via the communication unit(see
Section6.5.11.5, page89).
If only some of the SunnyString-Monitors have been detected, contact the Service .
6.5.11.5 Detecting the Sunny String-Monitors via the Communication Unit
1. Log into the user interface (see Section12.8.1, page177).
2. Select Data > Detection.
3. In the field Total number of devices to be detected, enter the number of Sunny String-Monitors +2.
4. Select the button [Start detection].
☑ The communication unit starts detecting all inverters and displays its progress. Once all devices have been
detected, the message ### Device detection finished ### is displayed.
☑ The Sunny String-Monitors have been detected.
6.5.11.6 Adjusting the Identification of the Sunny String-Monitors
1. Log into the user interface (see Section12.8.1, page177).
2. Select the first Sunny String-Monitor from the device list.
3. Select the tab Parameters.
4. Select the parameter SSMId and allocate a unique identification number to the SunnyString-Monitor. Note the
identification number.
5. Adjust the identification of the remaining Sunny String-Monitors using the same process.
System Manual 89MVPS22JP-SH-en-11
Page 90
6 Commissioning
SMA Solar Technology AG
6.5.12 Changing System Settings via Touch Display
6.5.12.1 Selecting the Language
1. Select .
2. Select .
3. Use the country symbol to select the language.
4. Confirm your entry by selecting .
6.5.12.2 Setting the Date, Time and Time Zone
Inverter adopts changes
The inverter will adopt date, time or time zone changes made via the display.
Procedure:
1. Select .
2. Select .
3. To change the date, select the day, month and year in the field . Use the and buttons to change the day,
month and year.
4. To change the time, select the hours, minutes and seconds in the field . Use and to change the hours,
minutes and seconds.
5. To change the time zone, select a time zone in the field . Use the and buttons to change the time zone.
6. Confirm your entry by selecting .
6.5.12.3 Selecting the Display Format
1. Select .
2. Select .
3. Select the date format.
4. Select the hour format.
5. Select the number format.
6. Confirm your entry by selecting .
6.5.12.4 Setting the Brightness
1. Select .
2. Select .
3. Set the display brightness. Select for a darker screen or for a lighter screen.
4. Confirm your entry by selecting .
6.5.13 Changing the System Settings via the User Interface
6.5.13.1 Selecting the Language
You can also set the language of the user interface via the XML file custom.xml (see Section6.5.14, page92).
Procedure:
1. Log into the user interface (see Section12.8.1, page177).
2. Select SunnyCentral > Settings > System.
3. Select the desired language in the field Language.
System ManualMVPS22JP-SH-en-1190
Page 91
SMA Solar Technology AG
4. Select the button [Save].
5. To log off from the user interface, select the button [Logout].
6 Commissioning
6.5.13.2 Setting the Date, Time and Time Zone
1. Log into the user interface (see Section12.8.1, page177).
2. Select SunnyCentral > Settings > System.
3. Select [Change] in the field Time zone (UTC offset).
4. Select the correct time zone in the Time zone (UTC offset) drop-down list.
5. Select an option in the Automatic change from summer time to winter time field:
Option Explanation
yes Automatic change from daylight saving time to standard time is active.
no Automatic change from daylight saving time to standard time is not active. Date and time
have to be set manually.
6. Enter the current date in the New date field.
7. Enter the current time in the New time field.
8. Select [Save].
9. To log off from the user interface, select the button [Logout].
6.5.13.3 Entering the Operator Name
1. Log into the user interface (see Section12.8.1, page177).
2. Select SunnyCentral > Settings > System.
3. Enter the operator name in the Operator name field.
4. Select the button [Save].
5. To log off from the user interface, select [Logout].
6.5.13.4 Changing the Password for the User Groups
The user interface distinguishes between the user groups "user" and "installer" . To change the password for the
"installer" user group, you must be logged in as an installer. To change the password for the "user" user group, you can
be logged in as a user or an installer.
Identical passwords for the user groups
If your "User" password is the same as your "Installer" password, you will automatically be logged in as an
installer.
During entry of the password, the user interface displays information on the security level of the password entered.
Passwords are categorized as very unsafe, unsafe, adequate, safe and very safe. Only choose passwords with at least
the security level safe. You can also change the password of the "installer" user group via the XML file custom.xml
(see Section6.5.14, page92).
Procedure:
1. Log into the user interface (see Section12.8.1, page177).
2. Select SunnyCentral > Settings > Security.
3. Enter a secure password in the User password or Installer password field and confirm it in the second field.
4. Select the button [Save].
5. To log off from the user interface, select the button [Logout].
System Manual 91MVPS22JP-SH-en-11
Page 92
6 Commissioning
SMA Solar Technology AG
6.5.14 Configuring System Settings via XML File
6.5.14.1 Uploading the File custom.xml
When you upload the file custom.xml to the user interface, the communication unit checks the file to ensure that the
values entered are valid and accurate, and adopts the settings at the next reset of the communication unit.
Correct network settings
While uploading, the communication unit checks the XML file custom.xml for validity and accuracy of the
entered values. The accuracy of the network settings is not checked.
• Ensure that the file custom.xml includes the correct network settings.
Procedure:
1. Create the file custom.xml with the required settings (see Section16.4, page253).
2. Log into the user interface as an installer (see Section12.8.1, page177).
3. Select SunnyCentral > Settings > System.
4. Select [Browse] in the field Upload settings (custom.xml).
5. Double-click on the file custom.xml in the open dialog box.
6. Select the button [Upload].
☑ The message Do you really want to apply the customer-specific settings is displayed.
✖ The message The settings have not been activated because the file has an invalid format or invalid
entries. is displayed?
• Click on the symbol.
• Read off the error in the open dialog box and correct the file custom.xml.
• Ensure that the file custom.xml is valid and correct.
7. Select the button [Confirm].
☑ The following message is displayed: The settings were successfully saved. The settings will become
effective by carrying out a reset to default settings.
8. To enable the settings in the file custom.xml., the communication unit must be reset to the default settings (see
Section6.5.15, page93).
9. To log off from the user interface, select the button [Logout].
6.5.14.2 Downloading the File custom.xml
The file custom.xml that you have uploaded can also be downloaded.
Procedure:
1. Log into the user interface as an installer (see Section12.8.1, page177).
2. Select SunnyCentral > Settings > System.
3. Click on the link (custom.xml) in the field Upload settings (custom.xml).
4. Choose a storage location for the file and save it.
5. To log off from the user interface, select the button [Logout].
6.5.14.3 Deleting the File custom.xml
You can delete the file custom.xml via the user interface. If you have enabled your personal settings via the file
custom.xml before deleting it, these settings will remain effective.
System ManualMVPS22JP-SH-en-1192
Page 93
SMA Solar Technology AG
No confirmation after deleting the file custom.xml
If you perform the following steps, the file custom.xml will be deleted immediately without displaying a dialog
box confirming the deletion.
• Save the file custom.xml before deleting it.
Procedure:
1. Log into the user interface as an installer (see Section12.8.1, page177).
2. Select SunnyCentral > Settings > System.
3. In the field Upload settings (custom.xml), select the button [Delete].
☑ The file custom.xml is immediately deleted.
4. To log off from the user interface, select the button [Logout].
6 Commissioning
6.5.15 Resetting the Communication Unit
Resetting the communication unit will restore all of its original default settings. If you have uploaded an XML file
custom.xml, the settings of this file will be adopted (see Section6.5.14.1 "Uploading the File custom.xml", page92).
Perform data backup
• Before you reset the communication unit, note down all settings such as network or portal settings.
• To avoid data loss, be sure to back up your operating data.
PV system identifier in SunnyPortal
If you reset all settings, all settings for logging into SunnyPortal will also be deleted. If you restart the
communication unit after the reset without changing any settings, the communication unit will create a new PV
system with a new PV system identifier in Sunny Portal.
• If the data is to be sent to the existing PV system in Sunny Portal, adjust the identifier of the old PV system (see
Section8.2.2.2, page106).
• Enter the e-mail address of a user who has SunnyPortal administrator rights for the PV system.
Procedure:
1. Log into the user interface as an installer (see Section12.8.1, page177).
2. Select SunnyCentral > Info.
3. Select the button [Default setting].
☑ A security prompt opens.
4. Select the button [Confirm].
5. To log off from the user interface, select [Logout].
6.6 Function Test
6.6.1 Checking the Fans
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section7, page96).
System Manual 93MVPS22JP-SH-en-11
Page 94
6 Commissioning
Procedure:
1. Switch the inverter to Stop.
2. Connect the supply voltage (see Section7.9.1, page103).
☑ The fans start to run for a few moments.
✖ The fans do not start up?
• Contact Service partner.
6.6.2 Checking the Heating Elements and Hygrostat
SMA Solar Technology AG
Figure 37: Position of the heating element and the hygrostat
Position Designation
A Hygrostat
B Heating element
Danger to life due to electric shock or electric arc if live components are touched
If the MVPowerStation and its devices are not correctly disconnected, dangerous voltages may be present in the
components which, if touched, will result in death or serious injury.
• Disconnect the MVPowerStation (see Section7.6, page101).
• After switching off the inverter, wait at least 15minutes before opening it to allow the capacitors to discharge
completely.
• Ensure that the MVPowerStation and its devices are voltage-free.
System ManualMVPS22JP-SH-en-1194
Page 95
SMA Solar Technology AG
Risk of burns due to hot components
Some components of the product can get very hot during operation. Touching these components can cause burns.
• Observe the warnings on all components.
• During operation, do not touch any components marked with such warnings.
• After switching off the product, wait until any hot components have cooled down sufficiently.
• Wear suitable personal protective equipment for all work on the product.
Procedure:
1. Switch the inverter to Stop (see Section7.4.1, page100).
2. Connect the supply voltage (see Section7.9.1, page103).
3. Set the hygrostat to the minimum value. To do this, pull the selector switch out slightly.
Tip: the hygrostat is adjusted correctly if the relay of the hygrostat emits an audible click.
4. Check whether the heating elements are radiating heat after a delay time of fiveminutes.
If the heating elements are not radiating heat, contact us (see Section17 "Contact", page256).
6 Commissioning
5. Reset the hygrostat to the initial value. To do this, press the selector switch back towards the hygrostat. The initial
value of the hygrostat is indicated in the circuit diagram.
6.7 Switching the Inverter On
Requirements:
☐ All electrical connections executed on site must be correct and firmly attached.
☐ The entire PV power plant, including the PV array, must have been tested by the PV system builder in accordance
with the applicable standards.
☐ A test protocol of the tests carried out must have been compiled in accordance with the applicable standards.
☐ The ground resistance of the PV system must have been determined.
☐ All values measured must be within the permissible range.
Procedure:
1. Lock the inverter.
2. Turn the key switch to Start.
☑ The DC switch switches on with an audible click.
☑ Under conditions of sufficient irradiation, the inverter starts feeding into the utility grid.
✖ Disturbance message on the touch display?
• Eliminate the disturbance (see Section9, page115).
System Manual 95MVPS22JP-SH-en-11
Page 96
7 Disconnecting and Reconnecting
SMA Solar Technology AG
7 Disconnecting and Reconnecting
7.1 Safety When Disconnecting and Reconnecting Voltage Sources
Danger to life due to applied voltages
High voltages are present in the live components of the product. Touching live components results in death or serious
injury due to electric shock.
• Always disconnect the product from the power transmission path and from the control path if no voltage is
required for working on the product (see Section7, page96).
• After switching off the inverter, wait at least 15minutes before opening it to allow the capacitors to discharge
completely (see Section7.4, page100).
• Wear suitable personal protective equipment of the corresponding hazard risk category for all work when the
power transmission path is connected. The hazard risk categories of the various areas of the product are
different. The areas are identified with warning labels.
• Wear suitable personal protective equipment for all work when the control path is connected.
• Always perform all work in accordance with the locally applicable standards, directives and laws.
• Do not touch any live components.
• Observe all warning messages on the product and in the documentation.
• Observe all safety information of the module manufacturer.
• The product must not be operated with open covers or doors.
Danger to life due to electric arcs if measuring device is not connected correctly
If the measurement points are incorrectly contacted, this can cause an electric arc. Electric arcs can result in death or
serious injury.
• Select the appropriate measurement range on the measuring device.
• Wear suitable personal protective equipment for all work on the device.
• Select correct measurement points.
Danger to life due to arc fault caused by fault in the medium-voltage switchgear
If there is a fault in the medium-voltage switchgear, arc faults may occur during operation of the product which can
result in death or serious injuries. If arc faults occur in the medium-voltage switchgear, the pressure evacuates under
the compartment of the medium-voltage switchgear.
• Only perform work on the medium-voltage switchgear when it is in a voltage-free state.
• Only perform switching operations on the medium-voltage switchgear from the service platform.
• Do not touch or access the roof of the medium-voltage switchgear when medium voltage is connected.
• When switching operations are performed, all persons that are not on the service platform have to keep a safe
distance from the product.
• All work and switching operations on the medium-voltage switchgear must only be performed by qualified
persons wearing adequate personal protective equipment.
System ManualMVPS22JP-SH-en-1196
Page 97
SMA Solar Technology AG
Danger to life due to applied voltages as a result of automatic reconnection
If the automatic cascade control is activated, it is possible that the voltage is automatically reconnected when
working on the medium-voltage switchgear. Touching live components can result in death or serious injury due to
electric shock.
• For the order option "Cascade control", deactivate the automatic reconnection function at the control device
and the medium-voltage switchgear.
• Deactivate the automatic reconnection function in the superordinate MVPowerStation with cascade control.
• Ensure that the control device cannot be accidentally switched on again.
• Wear suitable personal protective equipment for all work on the product.
Hearing impairment due to high-frequency noises of the inverter
The inverter generates high-frequency noises when in operation. This can result in hearing impairment.
• Wear personal protective equipment for all work on the product.
• Wear hearing protection.
7 Disconnecting and Reconnecting
Risk of burns due to hot components
Some components of the product can get very hot during operation. Touching these components can cause burns.
• Observe the warnings on all components.
• During operation, do not touch any components marked with such warnings.
• After switching off the product, wait until any hot components have cooled down sufficiently.
• Wear suitable personal protective equipment for all work on the product.
Connect and disconnect the AC voltage of the MV transformer
Only a duly authorized person is allowed to connect and disconnect the AC voltage of the MV transformer.
System Manual 97MVPS22JP-SH-en-11
Page 98
7 Disconnecting and Reconnecting
7.2 Connection Point Overview
7.2.1 Power Connection Points
SMA Solar Technology AG
Figure 38: Overview of the power connection points
Position Designation
1 DC subdistribution, e.g. SunnyString-Monitor
2 DC main distribution, e.g. SunnyMainBoxCabinet
3 Inverter
4 MV transformer
5 Medium-voltage switchgear
6 Higher-level medium-voltage switchgear (string, ring or transfer station)
A Disconnection device of the DC subdistribution or the DC main distribution
B DC switchgear of the inverter
C AC disconnection unit of the inverter
D Medium-voltage switch
E Disconnection device of the transfer station
System ManualMVPS22JP-SH-en-1198
Page 99
SMA Solar Technology AG
7.2.2 Connection Points for Supply Voltage
Figure 39: Connection points for supply voltage
Position Designation
1 Transformer for internal power supply
2 Station subdistribution
7 Disconnecting and Reconnecting
3 Lighting
4 Outlet
5 Inverter
6 Communit
A Transformer circuit breaker
B Circuit breaker of the entire station subdistribution
C Circuit breakers of the station subdistribution devices
7.3 Disconnecting the Supply Voltages of the Station Subdistribution
The circuit breakers for the different devices of the MVPowerStation are located in the station subdistribution.
Procedure:
1. For disconnecting the inverters from the supply voltage, switch off the circuit breakers VoltageSupplySC1 and
VoltageSupplySC2.
2. For disconnecting the Communit and its lighting from the supply voltage, switch off the circuit breaker
VoltageSupplyLighting/Communit.
3. For disconnecting the optional fans from the supply voltage, switch off the circuit breaker Fan.
4. For disconnecting the outlet from the supply voltage, switch off the circuit breaker Socket.
5. For disconnecting the entire MVPowerStation from the supply voltage, switch off the main switch
VoltageSupplyPowerOutlet.
6. For disconnecting the transformer for internal power supply, switch off the transformer protective device.
System Manual 99MVPS22JP-SH-en-11
Page 100
7 Disconnecting and Reconnecting
SMA Solar Technology AG
7.4 Disconnecting the Inverter
7.4.1 Switching off the Inverter
1. Turn the key switch to Stop.
2. Remove the key. This will protect the inverter from inadvertent reconnection.
3. Wait 15 minutes before opening the doors. This allows the inverter capacitors to discharge.
7.4.2 Disconnecting the DC Side
1. Switch off the inverter (see Section7.4.1, page100).
2. Disconnect all poles of the DC voltage in the DC main distribution or DC subdistribution (see documentation of the
main or subdistribution).
3. Ensure that the DC switchgear in the inverter is open.
4. Ensure that no voltage is present on the load side of the DC switchgear.
5. Cover or isolate any adjacent live components.
6. Remove the protective covers over the fuses.
7. Remove all fuses and disconnection blades from all fuse holders of the inverters. Use an LV/HRC fuse extractor.
7.4.3 Disconnecting the AC Side
1. Switch off the inverter (see Section7.4.1, page100).
2. Disconnect the DC side (see Section7.4.2, page100).
3. Disconnect the AC voltage of the MV transformer (see Section7.5, page101).
4. Switch off the AC disconnection unit in the inverter.
5. Ensure that no voltage is present.
6. Cover or isolate any adjacent live components.
7.4.4 Disconnecting the Supply Voltage and External Voltages
1. If the supply voltage is only to be disconnected upstream from
the circuit breaker, switch the circuit breaker of the supply
voltage off.
System ManualMVPS22JP-SH-en-11100
Loading...