Sungrow SG250HX-IN User manual

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SG250HX-IN-UEN-Ver12-201912
SG250HX-IN
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UUsseerr MMaannuuaall

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All Rights Reserved
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No part of this document can be reproduced in any form or by any means without the
prior written permission of Sungrow Power Supply Co., Ltd(hereinafter "SUNGROW").
TTrraaddeemmaarrkkss
and other Sungrow trademarks used in this manual are owned by
Sungrow Power Supply Co., Ltd.
All other trademarks or registered trademarks mentioned in this document are owned
by their respective owners.
SSooffttwwaarree LLiicceennsseess
•It is prohibited to use data contained in firmware or software developed by
SUNGROW, in part or in full, for commercial purposes by any means.
•It is prohibited to perform reverse engineering, cracking, or any other operations that
compromise the original program design of the software developed by SUNGROW.
Sungrow Power Supply Co., Ltd.
Address: NNoo..11669999 XXiiyyoouu RRdd..,, NNeeww && HHiigghh TTeecchh ZZoonnee,, HHeeffeeii,, 223300008888,, CChhiinnaa..
Email: iinnffoo@@ssuunnggrrooww..ccnn
Tel: [phone]
Website: wwwwww..ssuunnggrroowwppoowweerr..ccoomm

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About This Manual
The manual mainly describes the product information, guidelines for installation,
operation and maintenance. The manual cannot include complete information about the
photovoltaic (PV) system. You can get additional information about other devices at
wwwwww.. ssuunnggrroowwppoowweerr.. ccoomm or on the webpage of the respective component
manufacturer.
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This manual is valid for the following inverter types:
•SG250HX-IN
They will be referred to as “inverter” hereinafter unless otherwise specified.
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This manual is intended for:
•qualified personnel who are responsible for the installation and commissioning of the
inverter; and
•inverter owners who will have the ability to interact with the inverter.
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Read the manual and other related documents before performing any work on the
inverter is carried out. Documents must be stored carefully and be available at all times.
The contents of the manual will be periodically updated or revised due to the product
development. It is probably that there are changes of manual in the subsequent inverter
edition. The latest manual can be acquired via visiting the website at wwwwww..
ssuunnggrroowwppoowweerr..ccoomm.
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Important instructions contained in this manual should be followed during installation,
operation and maintenance of the inverter. They will be highlighted by the following
symbols.
SSyymmbbooll EExxppllaannaattiioonn
Indicates a hazard with a high level of risk that, if not avoided, will
result in death or serious injury.
Indicates a hazard with a medium level of risk that, if not avoided,
could result in death or serious injury.
Indicates a hazard with a low level of risk that, if not avoided, could
result in minor or moderate injury.

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SSyymmbbooll EExxppllaannaattiioonn
Indicates a situation that, if not avoided, could result in equipment or
property damage.
Indicates additional information, emphasized contents or tips that
may be helpful, e.g. to help you solve problems or save time.

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CCoonntteennttss
All Rights Reserved.....................................................................................................I
About This Manual.....................................................................................................II
1 Safety .............................................................................................................. 1
1.1 PV Panels..................................................................................................... 1
1.2 Utility Grid .................................................................................................... 1
1.3 Inverter ........................................................................................................ 2
1.4 Skills of Qualified Personnel.......................................................................... 3
2 Product Introduction ................................................................................... 4
2.1 Intended Usage............................................................................................ 4
2.2 Product Introduction..................................................................................... 5
2.2.1 Model Description............................................................................... 5
2.2.2 Appearance........................................................................................ 6
2.2.3 Dimensions ........................................................................................ 6
2.2.4 LED Indicator Panel ............................................................................ 7
2.2.5 DC Switch........................................................................................... 7
2.3 Circuit Diagram ............................................................................................ 7
2.4 Function Description .................................................................................... 8
3 Unpacking and Storage ........................................................................... 10
3.1 Unpacking and Inspection.......................................................................... 10
3.2 Identifying the Inverter................................................................................ 10
3.3 Scope of Delivery....................................................................................... 12
3.4 Inverter Storage ......................................................................................... 12
4 Mechanical Mounting .............................................................................. 14
4.1 Safety during Mounting .............................................................................. 14
4.2 Location Requirements .............................................................................. 14
4.2.1 Installation Environment Requirements ............................................. 14
4.2.2 Carrier Requirements........................................................................ 15
4.2.3 Installation Angle Requirements ........................................................ 15
4.2.4 Installation Clearance Requirements ................................................. 16
4.3 Installation Tools......................................................................................... 18
4.4 Moving the Inverter .................................................................................... 19

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4.4.1 Manual Transport ............................................................................. 19
4.4.2 Hoisting Transport ............................................................................ 19
4.5 Dimensions of mounting-bracket................................................................ 20
4.6 PV Bracket-Mounted Installation................................................................. 21
4.6.1 Preparation before Mounting ............................................................ 21
4.6.2 Mounting Steps ................................................................................ 21
4.7 Wall-Mounted Installation........................................................................... 23
4.7.1 Preparation before Mounting ............................................................ 23
4.7.2 Mounting Steps ................................................................................ 23
5 Electrical Connection ............................................................................... 26
5.1 Safety Instructions...................................................................................... 26
5.2 Terminal Description................................................................................... 26
5.3 Electrical Connection Overview .................................................................. 28
5.4 Additional Grounding Connection ............................................................... 30
5.4.1 Additional Grounding Requirements.................................................. 30
5.4.2 Connection Procedure...................................................................... 30
5.5 Opening the Wiring Compartment .............................................................. 31
5.6 AC Cable Connection ................................................................................. 32
5.6.1 AC Side Requirements...................................................................... 32
5.6.2 Requirements for OT/DT Terminal ..................................................... 34
5.6.3 Aluminium Cable Requirements ........................................................ 35
5.6.4 Connection Procedure...................................................................... 35
5.7 DC Cable Connection................................................................................. 38
5.7.1 PV Input Configuration...................................................................... 39
5.7.2 Connection Procedure...................................................................... 40
5.7.3 Installing the PV Connectors ............................................................. 41
5.8 Wiring of Tracking System Power Cable (Optional) ..................................... 42
5.9 RS485 Communication .............................................................................. 45
5.9.1 Interface Description......................................................................... 45
5.9.2 RS485 Communication System ........................................................ 46
5.9.3 Connection Procedure(Terminal Block) ............................................. 48
5.10 PLC Communication Connection.............................................................. 50
5.11 Dry Contact Connection ........................................................................... 50
5.11.1 Dry Contact Function...................................................................... 50
5.11.2 Wiring Procedure............................................................................ 52
5.12 Closing the Wiring Compartment .............................................................. 52

VII
6 Commissioning ........................................................................................... 54
6.1 Inspection before Commissioning............................................................... 54
6.2 Commissioning Procedure ......................................................................... 54
7 iSolarCloud APP ......................................................................................... 55
7.1 Brief Introduction........................................................................................ 55
7.2 Download and Install.................................................................................. 55
7.3 Function Overview ..................................................................................... 56
7.4 Login.......................................................................................................... 56
7.4.1 Requirements................................................................................... 56
7.4.2 Login Steps ...................................................................................... 56
7.5 Home page................................................................................................ 58
7.6 Running Information................................................................................... 60
7.7 History Record ........................................................................................... 62
7.7.1 Fault Alarm Records ......................................................................... 63
7.7.2 Power Yields Records....................................................................... 64
7.7.3 Event Records.................................................................................. 65
7.8 More.......................................................................................................... 65
7.8.1 Parameter Setting............................................................................. 66
7.8.2 Password Changing ......................................................................... 66
8 System Decommissioning ...................................................................... 68
8.1 Disconnecting the Inverter.......................................................................... 68
8.2 Dismantling the Inverter.............................................................................. 68
8.3 Disposal of the Inverter............................................................................... 69
9 Troubleshooting and Maintenance ...................................................... 70
9.1 Troubleshooting ......................................................................................... 70
9.2 Maintenance.............................................................................................. 80
9.2.1 Routine Maintenance........................................................................ 81
9.2.2 Maintenance Instruction ................................................................... 81
10 Appendix .................................................................................................... 84
10.1 Technical Data ......................................................................................... 84
10.2 Quality Assurance .................................................................................... 86
10.3 Contact Information ................................................................................. 86