Sungrow PVS-24MH User manual

PVS-24MH_20MH_16MH-UEN-Ver20-202007
User Manual
PVS-24MH/20MH/16MH
PV Array Combiner Box

Contents
1About This Manual..............................................................1
1.1 Validity....................................................................................... 1
1.2 Target Readers ......................................................................... 1
1.3 How to Use this Manual ............................................................ 1
1.4 Others ....................................................................................... 2
1.5 Symbol Explanation................................................................... 2
1.6 Figures Explanation................................................................... 3
2Safety Instructions..............................................................4
3Product Description ............................................................8
3.1 System Introduction................................................................... 8
3.2 Main Features ........................................................................... 9
3.3 Demonstration of the Type ........................................................ 9
3.4 Dimensions ............................................................................. 10
3.5 Identifying the PVS.................................................................. 10
4Mechanical Installation .....................................................12
4.1 Scope of Delivery .................................................................... 12
4.2 Storage.................................................................................... 13
4.3 Installation Site Requirements................................................. 14
4.4 Installation Tools...................................................................... 15
4.5Installing PVS.......................................................................... 16
5Electrical Installation.........................................................20

5.1 Internal Structure .....................................................................20
5.2 Waterproof Terminal ................................................................22
5.3 Wiring Preparations .................................................................24
5.4 Connections.............................................................................25
5.4.1 Input Connections ................................................................... 25
5.4.2 Output Connections ................................................................ 28
5.4.3 Grounding Connections........................................................... 30
5.4.4 Communication Connections .................................................. 33
5.5 Cable Layout............................................................................35
5.6 Communication Settings ..........................................................36
5.6.2 Setting Communication Address ............................................. 37
5.6.3 Setting String Input Number .................................................... 38
5.7 Start/Stop.................................................................................38
6Commissioning................................................................. 39
7Routine Maintenance ....................................................... 40
7.1 Overview..................................................................................40
7.2 Replace the Fuse.....................................................................40
7.3 Replace the Sealing Strip ........................................................41
8Troubleshooting ............................................................... 43
8.1 Before Troubleshooting............................................................43
8.2 Common Faults and Troubleshooting......................................43
9Appendix.......................................................................... 46
9.1 Technical Data.........................................................................46

9.2 Cable Requirement ................................................................. 47
9.3 Quality Assurance ................................................................... 47
9.4 Contact Information................................................................. 49

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1 About This Manual
1.1 Validity
This manual is valid for the following PV array combiner boxes:
PVS-24MH
PVS-20MH
PVS-16MH
Unless otherwise specified, any of the above PV array combiner boxes is
hereinafter referred to as "PVS".
1.2 Target Readers
This manual is for users who operate the PVS or conduct the maintenance work.
The operators must be trained and qualified personnel.
1.3 How to Use this Manual
Read this manual and other related document before installing the PVS.
Documents must be stored in a convenient place for future reference.
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 edition.

1 About This Manual User Manual
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1.4 Others
This document will take the PVS-24MH for example. For the installation and
use of other types of combiner boxes, please also refer to this manual.
PVS-20MH
PVS-16MH
The electrical structure, installation and use method of PVS-20MH / PVS-16MH
are the same with that of PVS-24MH. The only difference between them is the
numbers of DC input strings.
For any questions, please call the Customer Service Center of Sungrow Power
Supply Co., Ltd.
1.5 Symbol Explanation
This manual contains important safety and operational instructions that must be
accurately understood and followed during the installation and maintenance of
the equipment.
To ensure optimum use of this manual, note the following explanations of
symbols used.
DANGER indicates a hazard with a high level of risk which, if not avoided,
will result in death or serious injury.
WARNING indicates a hazard with a medium level of risk which, if not
avoided, will result in death or serious injury.

User Manual 1 About This Manual
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CAUTION indicates a hazard with a low level of risk which, if not avoided,
will result in minor or moderate injury.
NOTICE indicates a situation which, if not avoided, will result in equipment
malfunction or property damage.
NOTE indicates additional information, emphasized contents or tips
to help you solve problems or save time.
The following symbols on the device enclosure must be paid attention to.
Symbols
Explanation
Risk of electric shock! If not avoided, lethal hazard can be caused.
Hot surface! Do not touch!
The symbol represents protective conductor terminal. The terminal
should be connected firmly to avoid potential injury or property
damage.
1.6 Figures Explanation
Figures provided in this manual are all based on the PVS with standard
configuration.
The actual PVS you received may differ from the example figures in the
numbers of the installation hangers, etc.

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2 Safety Instructions
This chapter describes some important safety instructions about PVS.
Please read the manual carefully before installation. If any device damage
occurs when ignoring the safety instructions, our company has the right to
exclude all warranty claims.
Lethal Voltage!
Death resulting from burning and electric shock upon touching the live
components of the PVS.
Disconnect the end connection of the PV string before cable connection;
Do not use ordinary ammeter to measure the DC voltage before cable
connection. An ammeter with withstanding voltage of 1500V is
recommended. Serious consequences may follow if otherwise.
Observe all safety instructions required by the PV cell manufacturer.
Device damage or system fault may cause fire and electric shock!
Optical check the device for any possible damages or dangerous states
before operation.
Check if other external devices or circuit connection are in safe state.
Work on the device only when it is safe to do so.