Sunway NT 10000 User Manual

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MANUAL

User Manual for

Sunways Solar Inverter NT 10000

200

SOLAR

INVERTERS

User Manual for

Sunways Solar Inverter NT 10000

Table of contents

1.0General Information

1.1	Safety Instructions	91	General Safety Instructions
		92	Opening the Device
1.2	Sunways Solar Inverter	93	Scope of Delivery
	NT 10000	94	Integrating the Solar Inverter
			in the PV System	GB
		96	Structure of NT 10000
		98	Protection Concept

2.0Installation Instructions

2.1	Safety Instructions	101	Electrical Safety
		101	Mechanical Safety
		102	Cleaning Instructions
2.2	Basic Settings	103	Setting the Fixed Voltage Level
		104	Country Settings
2.3	Installation	107	Installation Site Requirements
		108	Mechanical Installation
		108	Electrical Connection and Cable Entry
		109	Grid Connection
		112	Connecting the PV Generator
		115	Communication Interfaces

		118	Connecting the Alarm Relay
		120	Connecting the Insolation and
			Temperature Sensor
2.4	Commissioning the Solar Inverter	122	Starting-Up and Shutting-Down the
			Solar Inverter
2.5	Dismantling the Solar Inverter	123	General Information

3.0Operating Instructions

3.1	Operating the Display	125	Menu Guide
		125	Navigating with the Arrow Keys
		125	Setting Values
		126	Menu Navigation Diagram
3.2	Configuration of the Solar Inverter 128		Setting the RS485 address
		128	Setting the Date / Time
		128	Setting the Display Language
		128	Setting the LCD Contrast
		128	Setting the Total Yield
3.3	3.3 Internal Data Memory	129	General Information
3.4	Sunways Monitor 2.0 Software	130	General Information
3.5	Sunways Portal and Sunways	131	General Information
	Communicator

3.6	Communication Link	131	Modem Link
		132	Interface Cables
		132	Interface Transformer
		133	Linking and Interconnecting Possibilities
3.7	Error Display	139	Errors 001 to 036
3.8	Error Diagnosis	144	Error, Causes and Remedies

4.0	Appendix			GB
4.2	Tyco Solarlok Connectors	154	Safety Instruction and Installation
4.2	List of Special Terms and	156	Designation and Description
	Abbreviations
4.3	Technical Data NT 10000	158	Solar Inverter NT 10000
4.4	Conformity and Safety	160	EU Low Voltage Directive 73/23/EEC
	Declarations	161	EMC Directive 89/336/EEC, Including Changes
			91/263/EEC
		162	Safety Clearance / Certificate of Compliance
			(VDEW 4th edition 2001)
4.5	Terms and Conditions of	163	Duration of Guarantee, Conditions,
	Guarantee		Exclusion of Liability
4.6	General Exclusion of Liability	165	Rights, Registered Trademarks

1.0 General information	Thank you for having chosen a Sunways
	Solar Inverter NT 10000! You have acquired
	a high-quality product with unique features
	and a top efficiency level. This Solar Inverter
	is designed in accordance with the proven
	HERIC® topology and therefore guarantees
	you a maximum energy yield.
	The Solar Inverter is equipped with three
	independent energy units which transform
	the energy of three separately connected
	PV generators into grid-compatible AC
	power and inject it in three phases. Thanks
	to the MPP multitracking process, PV gene-
	rators with various ratings can be connected
	to the same Solar Inverter with the
	NT 10000.
	In this user manual, you will find explana-
	tions on how to use the Sunways Solar
	Inverter NT 10000. It includes information
	on installation, commissioning, the functio-
	ning method, and system monitoring.

1.1Safety Instructions

The user manual contains safety instructions. They are marked by a triangle with an exclamation mark.

General Safety Instructions

All safety instructions contained in this section as well as in the entire user manual must be observed to ensure the safety of the user. The described product may not be operated if any mechanical or electrical component is defect.

Prior to commissioning the PV system, we

strongly recommend reading and observing GB the manual and the instructions carefully! Non-compliance may lead to serious con-

sequences such as damage to the device, damage to other assets, personal injury, or fatal accidents.

The Solar Inverter may only be installed by a trained and qualified electrician.

It must be approved by the power supply company in charge. In the chapter headings, the due steps are additionally marked by the adjacent symbol.

!	Opening the Device
!	Prior to opening the housing, always
	disconnect the device from the grid and
	the PV generator.
	After having been disconnected from the
	PV generator, there is still lethal voltage
	inside the device and at the PV generator
	hubs for approximately five minutes. It
	takes that long for the energy-storing
	capacitors to fully discharge.
	After having disconnected the device
	from the grid and the PV generator, wait
	at least five minutes before opening the
	device.

1.2 Sunways Solar Inverter NT 10000

Scope of Delivery

·Sunways Solar Inverter NT 10000

·assembly frame

·user manual, setup, guarantee card, CD ROM with software

·3 pairs of Tyco Solarlok connectors

Checking the Consignment

Prior to shipment, our products are checked to make sure they are in a perfect condition. They are carefully packaged in recyclable materials. Nevertheless, damage may occur during transportation which is normally the fault of the forwarding company.

Please check the delivered Solar Inverter
carefully!	GB
carefully!

Should you notice any damage to the packaging or to the Solar Inverter, please notify the forwarding company immediately. If required, your specialist dealer will be glad to support you. If a damage report is needed, it must be filed with the forwarding company no later than seven days after receipt of the consignment.

Integrating the Solar Inverter

in the PV System

Rating of the PV Generator

The technical data of the selected PV generator must be compatible with the specification of the Solar Inverter (see Technical Data). An incompatible rating may reduce the yield or destroy the device. The rating program Sunways NT Sundim can help you select the correct PV generator rating. You will find Sunways NT Sundim on the enclosed CD ROM or on our homepage www.sunways.de.

Prior to planning your system, please take the following considerations into account:

·Mind the orientation of the modules. In Central Europe, you will gain a maximum yield if the module has a horizontal angle of 30° and the PV generator field points directly towards the south.

·The warmer the module gets, the smaller the output of the cells will be. Therefore, make sure your PV generator has sufficient back ventilation when you install it.

·Check your PV generator for contamination approximately every three years. Contamination mostly occurs on the lower edge of the module; it forms a veil that is not even washed off by heavy rain. A loss of yield can be prevented by cleaning the modules with a wet cloth or a brush.

·Make sure none of the modules or solar cells of your system are in the shade. That may lead to a significant loss of yield.

·The NT 10000 has three internal energy units that are supplied by three independent PV generators. The NT 10000 is based on the «MPP multitracking» principle; i. e. each inlet has its own MPP controller.

Standard Components of a PV System

Depending on the recommendations of

your PV planner, your PV system is made

up of the following components:

Standard components of the PV system

PV	(1)
PV	(1)
PV	(1)

INVERTER

		(1)	PV generator switch
		(2)	Insolation sensor with
			integrated temperature
			probe
		(3)	Grid fuse
(3)	(4)	(4)	Power meter
(2)	PC	GRID
(2)

The PV generator switch is designed as a DC switch-disconnector and is made for disconnecting the PV generator from the Solar Inverter.

Rating: at least 900 V, ≥16 A

Since the NT 10000 is supplied by three independent PV generators, the DC main switches must also be independently of each other. It can be designed as a packettype switch, for example.

Grid connection:

The NT 10000 is connected to the grid in three phases. Each phase is internally controlled and monitored independently of the others.

Structure of NT 10000		The Solar Inverter NT 10000 is made up of
		three energy units that are controlled
		independently of each other. Each energy
		unit has its own DC inlet.

Energy Unit	DC Inlet	Control Circuit Board	AC Grid Connection
Energy unit 1	DC inlet 1	Control circuit board 1	Phase L1
Energy unit 2	DC inlet 2	Control circuit board 2	Phase L2
Energy unit 3	DC inlet 3	Control circuit board 3	Phase L3

		The following illustration shows the con-
		nection of the DC inlet and the layout of
		the energy unit:

Energy unit 3

Energy unit 2

Energy unit 1

Underside of the device

Solar Inverter NT 10000

Control circuit board 3

Control circuit board 2

Control circuit board 1

Interface circuit board L3

++ +

(1)	(2)	(3)	DC inlet	AC grid
				connection
–	–	–

Protection Concept

The micro controller continuously and simultaneously monitors and displays the following parameters. Numbers 1 to 3 refer to the energy units 1 to 3:

The numbering 1 to 3 refers respectively to the performance unit 1 to 3:

Error No.	Description	Error	Description
001	DC overvoltage 1	No.021	Insulation fault 2
002	DC overvoltage 2	022	Insulation fault 3
003	DC overvoltage 3	023	DC injection 1
004	Frequency fault 1	024	DC injection 2
005	Frequency fault 2	025	DC injection 3
006	Frequency fault 3	026	Isolated operation
007	Overheating of heat sink 1	027	Grid overvoltage 3-phase
008	Overheating of heat sink 2	028	Surge fault 1
009	Overheating of heat sink 3	029	Surge fault 2
010	Grid undervoltage 1-phase 1	030	Surge fault 3
011	Grid undervoltage 1-phase 2	031	Grid voltage 10 minutes mean value
012	Grid undervoltage 1-phase 3		> 10 percent Unominal 1
013	Grid overvoltage 1-phase 1	032	Grid voltage 10 minutes mean value
014	Grid overvoltage 1-phase 2		> 10 percent Unominal 2
015	Grid overvoltage 1-phase 3	033	Grid voltage 10 minutes mean value
016	Grid undervoltage 3-phase		> 10 percent Unominal 3
017	AFI fault 1	034	Control circuit board 1 fault
018	AFI fault 2	035	Control circuit board 2 fault
019	AFI fault 3	036	Control circuit board 3 fault
020	Insulation fault 1	038	Back-up battery empty

In case of an error, the current injection

is immediately stopped, and the grid relay is triggered which disconnects the Solar Inverter from the grid.

In addition, there are the following protection devices on the grid side and on the PV generator side:

· Varistors on the grid side

They protect the power semiconductors GB in case of high-power, temporary voltage

peaks in the grid, and they discharge the throttle in case of disconnection from the grid.

·Varistors on the PV generator side Varistors offer protection from atmospheric overvoltage (e. g. caused by remote lightning strikes).

2.0Installation Instructions

100

2.1Safety Instructions

Electrical Safety

Prior to opening the housing, disconnect the Solar Inverter from the electricity of the grid and the PV generator.

After disconnection from the PV generator and the grid, there is still lethal voltage inside the Solar Inverter and at the

PV generator hubs for approximately five

minutes. It takes that long for the energy- GB storing capacitors to fully discharge.

After having disconnected the Solar Inverter from the grid and the PV generator, wait at least five minutes before opening the Solar Inverter.

Mechanical Safety

During assembly, make sure the cables or connecting lines attached to the Solar Inverter are installed safely and suitable mechanical cable retaining devices (e. g. cable channels) are used.

101

!	Cleaning Instructions
!	Prior to cleaning your PV modules, always
	disconnect the PV system from the power
	grid by opening the grid disconnecting
	device (main fuse), and open the DC circuit
	breaker on the PV generator to prevent
	the risk of an electric shock.
	Use a dry, soft cloth to clean your PV
	modules. Never use caustic, solvent-based,
	or scouring cleaning agents or polish.
	Please observe the instructions of the
	PV module manufacturer.

102

2.2Basic Settings

Setting the Fixed Voltage Level

Your Sunways Solar Inverter is equipped with a precise MPP control. If less than 200 watt are injected, the control of the energy unit concerned operates at a fixed voltage level. That prevents unnecessary MPP searching. To minimise adjustment losses during fixed voltage operation, the fixed voltage level of each energy unit of the Solar Inverter can be set separately. The optimum fixed voltage level depends on your PV generator model.

Fixed voltage	No-load voltage
level	PV generator at 25 °C

420 V	≤ 630 V
540 V	> 630 V

The fixed voltage can be set with the slide switch «S100» on the control circuit board. Ex works, the switch is set to «420V».

To set a fixed voltage of 540 V, slide the switch to the «540V» position.

«420 V» position

«540 V» position

Illustr.: Slide switch «S100» for setting the fixed voltage level

103

Country Settings

Please note that it takes different configurations to operate Sunways Solar Inverters in different countries. The setting can be adjusted accordingly with the DIP switch «S300» below the display circuit board.

Illustr.: DIP switch «S300» for changing the country setting

Country

Germany

Spain

Switch position

10/15%

phase-3

AFI

Voltage

10/15%

phased 3

AFI

Voltage

Change

·Opening time after power failure: 3

·Grid monitoring 1-phase

104

To change the country setting, the housing cover must be removed. The DIP switch must be re-positioned to the respective country setting on all three control circuit boards.

When delivered, the Solar Inverters are pre-set to the intended destination country. The pre-set country is indicated by

the first two digits of the serial number:

Germany	00.....
Spain	02.....

105

2.3Installation

Warm
Warm
air

Wall	min. 300 mm

Cool air

The Solar Inverter may only be installed by a trained and qualified electrician.

Special tools are needed for installation.

Please read this chapter very carefully.

Ceiling

min. 300 mm

mm 300

Installation Site Requirements

· Mechanical Load-Bearing Capacity

During assembly, please keep in mind that the Solar Inverter weighs 30 kg. The assembly foundation must be solid and capable of bearing the weight in the long run.

· Thermal Interaction

The assembly foundation must be made of flame-retardant material (unsuitable: wooden or plastic foundation; suitable: concrete and masonry), because the frame of the Solar Inverter can reach up to 70° C.

Maintain a minimum distance of 300 mm to other devices, cabinets, ceilings, cable channels, etc. above, below, and next to the housing.

The Solar Inverter must be installed in an upright position to ensure unobstructed convection.

Do not install several Solar Inverters on top of each other, as they might heat each other up.

If the Solar Inverter is installed in a switch cabinet, make sure the heat is removed to a sufficient degree.

The ambient temperature may not drop below -25° C or rise above +40° C.

To protect the Solar Inverter from unnecessary external heat sources, do not expose

the Solar Inverter to direct sunlight.

·Protection from Moisture and Foreign Objects

Thanks to the high protection level IP 54, the Solar Inverter can be installed indoors as well as in a sheltered outdoor area, but it may not be directly exposed to rain.

Make sure the dust filter on the lower left side is not clogged by contamination.

That would impair the intake of cooling air. Depending on the surroundings, the filter should be cleaned at regular intervals.

107

Mechanical Installation

Electrical Connection and Cable Entry

! !

For assembly, please observe the instruc-

tions in the «Setup» leaflet!

As soon as the Solar Inverter is fixed to the assembly frame, it can be electrically connected. The device may only be opened by a qualified electrician. For this purpose, loosen the four lateral hexagon socket screws by one rotation. The cover can now be moved up to the upper rabbet. Fix the cover in position by simply inserting the hexagon key on the lower right side. The wiring space is now accessible.

108

Grid Connection

The Solar Inverter must be connected to the grid with five-cores (L1, L2, L3, N, PE). We recommend a cable cross-section of

5 x 4 mm2.

The Solar Inverter is connected to the supply grid via its internal printed-circuit board terminals.

As an input-to-grid line protection element, we recommend using a 3 x 25 A automatic circuit breaker for the NT 10000. No consumers may be connected to the supply line from the Solar Inverter to the automatic circuit breaker. The Solar Inverter injects in three phases via terminals L1, L2, and L3. Please mind the pin assignment. A wrong assignment may

destroy the device.

	Alarm relais, RS485 (in and out),
DC1 DC2 DC3	irradiation sensor with integrated
	temperature measurement
DC+	USB	RS 232

DC–

AC wiring loom L1, L2, L3, N, PE

Illustr.: Entry openings on the underside of the device

109

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