SMA SC 500HE-20 Installation
EN
Central inverter
SUNNY CENTRAL
500HE/630HE/720HE/760HE/800HE
Installation Manual
SCxxxHE-20-IA-IEN111210 | 98-40005110 | Version 1.0
SMA Solar Technology AG Table of Contents
Table of Contents
1 Information on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Intended Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Skilled Workers Qualification. . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Sunny Central . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.1 Design and Function of the Sunny Central . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.2 Serial Number and Device Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1.3 Symbols on the Sunny Central . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1.4 Touch Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.1.5 Indicator lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.1.6 Quick-Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.1.7 Key Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2 Sunny Central Communication Controller. . . . . . . . . . . . . . . . . 18
4 Delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.1 Check for Transport Damage . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6 Preparation for Installation . . . . . . . . . . . . . . . . . . . . . . . . 22
6.1 Installation Site Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.1.1 Dimensions of the Sunny Central. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.1.2 Ambient Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.1.3 Minimum Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.1.4 Requirements for Cable Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.1.5 Requirements for cable routing between inverter and transformer . . . . . . . . 27
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Table of Contents SMA Solar Technology AG
6.2 Preparing the Station Floor for Installation . . . . . . . . . . . . . . . . 28
6.2.1 Position of the mounting holes for the Sunny Central . . . . . . . . . . . . . . . . . . 28
6.2.2 Drilling mounting holes in the station floor . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7 Transporting the Sunny Central . . . . . . . . . . . . . . . . . . . . 29
7.1 Center of gravity of the inverter . . . . . . . . . . . . . . . . . . . . . . . . 29
7.2 Transporting the Sunny Central with a Forklift . . . . . . . . . . . . . 30
7.3 Mounting the kick plates at the rear of the inverter. . . . . . . . . . 30
7.4 Transporting the Sunny Central with a Pallet Truck. . . . . . . . . . 31
7.5 Transporting the Sunny Central with a Crane . . . . . . . . . . . . . . 32
8 Installation of the Sunny Central. . . . . . . . . . . . . . . . . . . . 34
8.1 Sealing the exhaust air zone . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.2 Fastening the Inverter on the Foundation . . . . . . . . . . . . . . . . . 34
8.3 Disassembling the Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.4 Removing the Transport Lock from the Inverter Cabinet . . . . . . 35
9 AC and DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.1 Safety during Cable Connection . . . . . . . . . . . . . . . . . . . . . . . 36
9.2 Connection Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.3 Connection area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.3.1 DC Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.3.2 DC Busbar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.4 Cable Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9.4.1 Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9.4.2 Cleaning the contact surfaces of terminal lugs and
connection lugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9.4.3 Connecting cables with 1 terminal lug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.4.4 Connecting cables with 2 terminal lugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.5 Connecting the PE cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
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SMA Solar Technology AG Table of Contents
9.6 Connecting the DC cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.6.1 Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.6.2 Connecting the SMB Connection Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.6.3 Connecting the DC Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9.7 Connecting the AC Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
9.8 Mounting the kick plates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
10 Cable Connection in the Connection Cabinet . . . . . . . . . 45
10.1 Connection area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
10.2 Preparing the Cable Connection . . . . . . . . . . . . . . . . . . . . . . . 46
10.3 Leading the Cables into the Connection Cabinet . . . . . . . . . . . 47
10.4 Connecting the Cables in the Connection Cabinet. . . . . . . . . . 48
10.4.1 Connecting the cables to the customer terminal block . . . . . . . . . . . . . . . . . 48
10.4.2 Important Measures for Non-utilized Options. . . . . . . . . . . . . . . . . . . . . . . . 48
10.4.3 Connecting the Sunny String-Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10.4.4 Connecting the Remote Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10.4.5 Connecting the External Target Value Specification . . . . . . . . . . . . . . . . . . . 50
10.4.6 Connecting the Transformer Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
10.4.7 Connecting the External Voltage Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
10.4.8 Connecting the External Quick-Stop Cabling . . . . . . . . . . . . . . . . . . . . . . . . 52
11 Connection of the Communication Devices . . . . . . . . . . . 54
11.1 Structure of a Plant Network. . . . . . . . . . . . . . . . . . . . . . . . . . . 54
11.2 Position of the communication ports . . . . . . . . . . . . . . . . . . . . . 55
11.3 Building a Plant Network with Copper Cables. . . . . . . . . . . . . 56
11.4 Building a Plant network with Optical Fibers . . . . . . . . . . . . . . 56
12 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
12.1 Commissioning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
12.2 Checking the Cabling on the Inverter . . . . . . . . . . . . . . . . . . . . 58
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Table of Contents SMA Solar Technology AG
12.3 Checking the Inverter Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . 59
12.3.1 Checking the DC Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
12.3.2 Checking the AC Grid Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
12.3.3 Checking the External Voltage Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
12.4 Mounting the Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
12.5 Inserting Fuses or Disconnecting Blades . . . . . . . . . . . . . . . . . . 62
12.6 Switching on the Voltage Supply . . . . . . . . . . . . . . . . . . . . . . . 63
12.7 Switching on the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
13 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
14 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
14.1 Sunny Central 500HE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
14.2 Sunny Central 630HE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
14.3 Sunny Central 720HE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
14.4 Sunny Central 760HE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
14.5 Sunny Central 800HE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
15 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6 SCxxxHE-20-IA-IEN111210 Installation Manual
SMA Solar Technology AG 1 Information on this Manual
1 Information on this Manual
Validity
It is valid for the following device types with firmware version 01.14.12.R or higher:
• Sunny Central 500HE (SC 500HE-20)
• Sunny Central 630HE (SC 630HE-20)
• Sunny Central 720HE (SC 720HE-20)
• Sunny Central 760HE (SC 760HE-20)
• Sunny Central 800HE (SC 800HE-20)
Target Group
This manual is intended for skilled workers. Only qualified personnel are allowed to perform the tasks
set forth in this manual (see section 2.3"Skilled Workers Qualification",page12).
Additional Information
Additional information is available at www.SMA.de/en:
Information Document type
Installation requirements for Sunny Central 500HE/630HE/
720HE/760HE/800HE
Medium-voltage Transformers − Important requirements for
medium-voltage transformers for Sunny Central of the HE and
CP range.
COM-B − Communication distributor for large-scale plants with
Sunny Central, Sunny Mini Central or Sunny Tripower
Sunny Main Box ‒ Connecting the DC cabling for PV inverters Technical information
Technical information
Technical information
Technical information
Installation Manual SCxxxHE-20-IA-IEN111210 7
1 Information on this Manual SMA Solar Technology AG
%"/(&3
8"3/*/(
$"65*0/
/05*$&
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, could result in death or
serious injury.
Indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
Indicates a situation that can result in property damage if not avoided.
Indicates information that is important for a specific topic or objective, but is
not safety-relevant.
☐ Indicates a requirement for meeting a specific goal.
☑ Desired result.
✖ Undesired result. Followed by a solution on how to achieve the desired result.
Typography
Typography Usage Example
"light" • Display messages
• Parameters
• Terminals
•Sockets
bold • Elements which you should
select
• Elements which you should enter
• The inverter switches into the
"Waiting" operating state.
• Set parameter "FanTest" to 1.
Nomenclature
In this manual, the Sunny Central of the HE series is referred to as Sunny Central or inverter.
In this manual, the Sunny Central Communication Controller is also referred to as SC-COM.
8 SCxxxHE-20-IA-IEN111210 Installation Manual
SMA Solar Technology AG 2 Security
A
B
C
D
E
S
M
A
S
M
A
H
E
2Security
2.1 Intended Use
The Sunny Central is a central inverter which converts the direct current from PV modules into
alternating current. Here, the maximum permissible DC input voltage must not be exceeded.
The Sunny Central is suitable for indoor installation, providing that the specified safety distances are
complied with. The enclosure complies with the IP21 protection class. IP21 means that the closed
inverter is protected against vertically falling dripping water. The inverter is classified under
Class 3 C1L according to EN 60721-3-3.
Inverters of the HE series may only be operated in connection with a suitable transformer.
The transformer must be designed for the voltages that arise during pulsed operation of the inverter.
The voltages can reach a magnitude of maximum ±1 450 V to ground. (see Technical Information
"Medium-voltage Transformer" at www.SMA.de/en).
Do not switch off or change s ettings th at affe ct gri d management without first obtaining approval from
the distribution grid operator.
Figure1: Principle of a grid-tie PV plant with an inverter
Position Description
APV modules
B Sunny String-Monitor
C Sunny Central
D Medium-voltage Transformers
E Power distribution grid
Installation Manual SCxxxHE-20-IA-IEN111210 9
2 Security SMA Solar Technology AG
2.2 Safety Instructions
Electrical Risk
Risk of electric shock when touching conductive parts
High voltages that can cause electrical shocks are present in the inverter. Work on the inverter is only
allowed if the power is disconnected and in compliance with the guidelines that apply at the
installation location.
• Disconnect the following components:
– Grid voltage for grid feeding
– Internal supply
–DC voltage from the PV array
– Additional external voltages (e.g., control signals of a control room)
• Ensure that the device cannot be reconnected.
•Ensure that no voltage is present.
• Ground and short-circuit.
• Cover or safeguard any adjacent live components.
Electric shock through capacitors not fully discharged
Hazardous voltages may still be present in the inverter even if the AC and DC main switches are
switched off.
• Wait at least 12 minutes after switching off the inverter.
Electric shock caused by damage on the inverter
The operation of a damaged inverter can lead to serious or lethal injuries through electric shock.
• Operate the inverter only in technically proper and operationally safe status.
• Check the inverter regularly for visible damage.
• Ensure that all safety features are freely accessible at all times.
• Regularly check for correct functioning.
Electric shock caused by ground fault
In case of a ground fault, assume that grounded plant components are still live.
• Ensure that no voltage is present before touching.
Electric shock when entering the PV field
The insulation monitoring device with GFDI or Remote GFDI does not provide protection from injury
when GFDI is activated. PV modules grounded by means of GFDI disperse voltage to ground.
When entering the PV field, lethal electric shocks may occur.
• Before entering the PV field, switch the PV modules to insulated operation.
• Ensure that the insulation resistance of the PV field is greater than 1 k Ω .
10 SCxxxHE-20-IA-IEN111210 Installation Manual
SMA Solar Technology AG 2 Security
Electric shock resulting from a failure to comply with safety requirements
Failure to follow this manual, the general instructions or safety instructions may lead to severe injury
due to electric shock.
• Only perform work as described in this manual. Observe all safety instructions.
• Establish all electrical connections according to the circuit diagram.
• Safely store the documentation within the immediate area of the inverter. It must be accessible
to service and maintenance personnel at all times.
Electrostatic discharge can damage electronic components
Electrostatic discharge can destroy component parts.
• During work on the inverter and handling of the components, observe the ESD protection
regulations and wear protective gloves.
• Discharge electrostatic charges through contact with unvarnished, grounded enclosure parts
(e.g., on the PE connection of the doors). Only then is it safe to touch any electronic components.
Burn Hazard
Some components, such as fuses, can become hot during operation.
• Wear safety gloves when working on the inverter.
Inverter Damage
Tampering with the device may result in plant damage.
• Do not operate the inverter while the door is open.
If the key remains in the door lock, the inverter can be opened by unauthorized persons.
• Remove the key from the door locks and from the key switch.
• Keep the keys in a safe place.
Penetrating moisture can damage the inverter.
• Do not open the inverter when it is raining or in case of humidity > 95%.
Electrostatic discharge can destroy components.
• During work on the inverter and handling of the components, observe the ESD protection
regulations and wear protective gloves.
• Discharge electrostatic charges through contact with unvarnished, grounded enclosure parts
(e.g., on the PE connection of the doors). Only then it is safe to touch any electronic components.
Warning signs must be easily readable at all times and must be replaced in the event of damage.
Hazard due to blocked escape route
Opening of the doors of 2 opposing inverters blocks the escape route. It is imperative that the escape
route is freely accessible at all times. Make sure the minimum passage width of the route meets local
standards. In Germany, the minimum passage width is 500 mm.
• Only the door of one inverter may be open at any given time.
Installation Manual SCxxxHE-20-IA-IEN111210 11
2 Security SMA Solar Technology AG
2.3 Skilled Workers Qualification
All work on the inverter may only be carried out by qualified technical personnel. Qualified means
that the personnel has the relevant training for the tasks.
For commissioning and operating the inverter, the personnel must be familiar with the installation
manual and the user manual. Observe safety instructions.
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SMA Solar Technology AG 3 Product Description
3 Product Description
3.1 Sunny Central
3.1.1 Design and Function of the Sunny Central
The Sunny Central is a PV inverter that converts the direct current from the PV array into alternating
current for the grid.
Figure2: Sunny Central, using the example of a Sunny Central 800HE with touch display
Position Description
A Inverter cabinet
B Connection cabinet
CTouch display
D Service interface
EKey Switch
FQuick-Stop
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3 Product Description SMA Solar Technology AG
Figure3: Sunny Central, using the example of a Sunny Central 800HE with indicator lights
Position Description
A Inverter cabinet
B Connection cabinet
C Indicator lights
D Service interface
EKey Switch
FQuick-Stop
The Sunny Central can implement the requirements of the distribution grid operator with the aid of the
Power Reducer Box or the Sunny Central Communication Controller.
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SMA Solar Technology AG 3 Product Description
3.1.2 Serial Number and Device Type
The serial number (Serial No.) and device type (Type) of the Sunny Central are listed on the type
label. The type label is located on the inside of the right door on both the inverter cabinet and the
connection cabinet.
Reading off the serial number
You can identify the serial number without opening the inverter. The serial number is located at
the bottom right on the outside of the switch cabinet door. You can also read off the serial
number from the display.
Reading off the firmware
You can read off the version number of the firmware from the inverter and the display via the
user interface of the Sunny Central Communication Controllers or from the display.
3.1.3 Symbols on the Sunny Central
All the symbols on the Sunny Central and the type label are explained below.
Symbol Description
CE mark.
The Sunny Central complies with the relevant provisions of the European
Community.
Protection class I.
All operating facilities are connected to the protective conductor system of the
Sunny Central.
Degree of protection IP 21.
The Sunny Central is protected against dripping water.
Beware of dangerous electrical voltage.
The Sunny Central operates at high voltages. All installation work on the
Sunny Central must be performed by electrically skilled persons only.
Center of gravity of the inverter.
Installation Manual SCxxxHE-20-IA-IEN111210 15
3 Product Description SMA Solar Technology AG
3.1.4 Touch Display
Depending on which option is ordered, the Sunny Central may be equipped with a touch display.
Different kinds of inverter data can be viewed on the touch display. The touch display is only used as
a means for viewing data. The display switches off if it is inactive for more than 5 minutes. It switches
on when it is touched.
3.1.5 Indicator lights
Depen ding on whi ch options are ord ered, the Sunny Cen tral may be equipped with 3 indi cator lights.
The indicator lights show the status of the inverter.
The functions of each status are described below.
Condition Description Function
Green indicator
light glows
continuously
Yellow and green
indicator lights
glow
continuously
Yellow indicator
light glows
continuously
Red indicator
light glows
continuously
All indicator lights
are off
Feed-in
operation
Limited
operation
Warning The Sunny Central is currently not
Fault The Sunny Central has detected a
No feed-in
operation
The Sunny Central is feeding into
the power distribution grid.
The Sunny Central has detected a
warning. The warning currently
does not affect the operation of the
Sunny Central.
feeding power into the grid and
has detected a warning. It is
automatically reset as soon as the
warning is no longer present.
This status is used, for instance,
when the level of irradiation is low.
fault and is now switched off.
The Sunny Central is not feeding
into the grid, the supply voltage is
disconnected, or the key switch is
set to "Stop".
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SMA Solar Technology AG 3 Product Description
3.1.6 Quick-Stop
In case of emergency, this switch enables disconnection of the inverter from the PV array and the
medium-voltage grid within 500 ms.
Tripping the quick-stop function
The quick-stop function may only be tripped if there is imminent danger.
Pressing the quick-stop button does not trip rapid discharge of the capacitor.
Pressing the quick-stop button opens the DC contactor, switches off the inverter bridge and
disconnects the inverter from the AC grid.
3.1.7 Key Switch
The key switch is used to switch the Sunny Central on and off.
Switch position "Start"
After turning the switch to the "Start" position, the Sunny Central switches from "Stop" mode to
"Grid monitoring" mode. If there is sufficient irradiation and a valid grid connection, the Sunny Central
switches to feed-in operation. If there is insufficient irradiation, the input voltage is too low for startup,
and the Sunny Central remains in the "Grid monitoring" state.
Switch position "Stop"
If the key switch is turned to "Stop" when the Sunny Central is in the "Grid monitoring" mode, a motor
drive automatically shuts off the DC main switch. The Sunny Central goes into the "Stop" mode.
If the key switch is turned to "Stop" when the Sunny Central is in "MPP load operation", the
Sunny Central switches to the operating state "Shutdown". Once shutdown is complete, the AC
contactor and the DC main switch tur n off aut oma tic all y and the Sunny C entral goe s into "Sto p" mode.
Installation Manual SCxxxHE-20-IA-IEN111210 17
3 Product Description SMA Solar Technology AG
HE
SUNNY CENTRAL
STRING MONITOR CONTROLLER
3.2 Sunny Central Communication Controller
The SC-COM is the central communication interface of the inverter. The SC-COM establishes the
connection between the inverter and the plant operator.
Figure4: SC-COM
The SC-COM collects all data from the connected devices. The SC-COM enables monitoring,
parameterization and remote diagnosis of the inverter via computer, as well as power regulation by
the grid operator.
These various tasks performed by the SC-COM can be organized in 2 separate networks:
• Monitoring network: takes care of the monitoring, parameterization and remote diagnosis
functions.
• Regulation network: here, the specifications issued by the distribution grid operator for grid
stability management are transmitted. Since the regulation network is used exclusively for
transmitting the data of the distribution grid operator, the specifications are made available in
the requisite time.
If there is only a low level of data flow in the monitoring network, the grid operator specifications can
also be transmitted via the monitoring network. In this case, there is no need for 2 networks.
The operator can access all data stored in the SC-COM via an Ethernet connection.
You can set the parameters of the inverter via the SC-COM.
The networks are realized on the basis of copper cables or optical fibers.
PV Plant Communication Type
The interface of the SC-COM is set by default to "COM 3". The default setting of the baud rate
for the following options is:
• Option 11/0 without hub: baud rate 115 200
• Options 11/1 and 11/2 with hub: baud rate 19 200
Do not modify these settings.
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SMA Solar Technology AG 4 Delivery
4Delivery
4.1 Check for Transport Damage
Every inverter has been thoroughly checked by SMA Solar Technology AG before leaving our
factory. Despite the robust packaging, damage can occur during shipping and transport. Carry out a
visual inspection of the inverter before installation. Should you find any visible damage, contact your
retailer and the transport company responsible for the delivery of the inverter.
4.2 Scope of Delivery
Check the delivery for completeness and any visible external damage. Contact your retailer or the
SMA Serviceline if the delivery is incomplete or damaged.
Figure5: Delivery components
Position Quantity Description
A 1 Sunny Central
B1SMA documentation set:
installation manual, user manual, circuit diagram,
commissioning report
C6Kick plate
D1LV/HRC fuse handle
E 1 Non-woven abrasive
F34Screw
G34Nut
H 68 Fender washer
Installation Manual SCxxxHE-20-IA-IEN111210 19
4 Delivery SMA Solar Technology AG
Position Quantity Description
I68Spring washer
K 80 Cable tie
L 3 Rubber seal (9.5 mm … 17 mm)
Position of the LV/HRC fuse handle
For order option DC fuse, the LV/HRC fuse handle is to be found on the inner side of the right
door of the connection cabinet.
20 SCxxxHE-20-IA-IEN111210 Installation Manual
SMA Solar Technology AG 5 Storage
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5Storage
If you need to store the inverter prior to final installation, note the following points:
Penetrating moisture can damage the inverter.
• Only store the inverter in a closed state.
• Storage permissible in dry, covered locations only. Observe the conditions for degree of
protection IP 21.
• Temperature at the storage location between ‒20°C … +50°C.
An uneven foundation may damage the frame construction.
• The foundation must be suitable for the weight of the inverter of 1 670 kg.
• Unevenness of the foundation max. 0.25%.
Storage in cold conditions and high humidity
If when storing the Sunny Central you connect the external voltage supply and switch on the
miniature circuit-breaker of the external voltage supply, the heater is activated automatically in
the event of high humidity. The connection of the external voltage supply is described in section
10.4.7"Connecting the External Voltage Supply",page51.
Installation Manual SCxxxHE-20-IA-IEN111210 21
6 Preparation for Installation SMA Solar Technology AG
HE
906 mm
1 202 mm
100 mm
1 202 mm
2 404 mm
2 093 mm
6 Preparation for Installation
6.1 Installation Site Requirements
6.1.1 Dimensions of the Sunny Central
Figure6: Dimensions
Height Width Depth
2 093 mm 2 404 mm 906 mm
6.1.2 Ambient Conditions
☐ The required amount of supply air is available. If the required amount of air cannot be
guaranteed, install an extra ventilation, e.g., external fans.
☐ The installation site must be accessible at all times.
☐ The altitude of the installation site must be below the maximum installation altitude
(see section 14"Technical Data",page66).
☐ The ambient temperature must be within the operating temperature range
(see section 14"Technical Data",page66).
☐ The installation site is compliant with the requirements on ambient conditions
(see "Installation Conditions for Sunny Central 500HE/630HE/720HE/760/HE/800HE”).
22 SCxxxHE-20-IA-IEN111210 Installation Manual
SMA Solar Technology AG 6 Preparation for Installation
8"3/*/(
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HE
300 mm
220 mm
300 mm
1 200 mm
6.1.3 Minimum Clearances
Danger of fire due to overheating of cables.
Differing cable lengths result in excessive heating of the cables.
• All line conductors from the inverter to the transformer must be of the same length.
• The cable length between the connection points must not exceed a maximum of 15 m.
Damage to the inverter and transformer due to discharged air being sucked in.
• Install the plant so that the inverter cannot suck in any exhaust air.
Minimum clearance for 1 inverter
Figure7: Minimum clearances of the inverter
The exhaust air vent is located at the rear of the inverter.
For the optimum operation of the inverter, observe the following points:
Installation Manual SCxxxHE-20-IA-IEN111210 23
• Do not block or close the exhaust air vent.
• Ensure that the station is equipped with a suitable exhaust air vent.
• In order to prevent thermal short circuits in the inverter, ensure that there are exhaust air ducts
in closed rooms.
• The exhaust air vents must be accessible for cleaning at all times.
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