Sungrow PVS-16MH User manual
PVS-16MH/PVS-18MH/PVS-20MH/PVS-
24MHPV Intelligent Combiner BoxUser
ManualPVS-16_18_20_24MH-UEN-
Ver64-202305M-H-002508
User Manual
PV Intelligent Combiner Box
PVS-16MH/PVS-18MH/PVS-20MH/PVS-24MH
PVS-16_18_20_24MH-UEN-Ver64-202305
I
Contents
1 About This Manual ...........................................................................................1
1.1 Validity...........................................................................................................1
1.2 Target Group..................................................................................................1
1.3 How to Use This Manual .................................................................................1
1.4 Symbol Explanations ......................................................................................2
1.5 Model Description...........................................................................................3
1.6 Other Precautions ..........................................................................................3
2 Safety Instructions ............................................................................................4
3 Product Description ..........................................................................................7
3.1 Product Introduction........................................................................................7
3.1.1 Overview..............................................................................................7
3.1.2 Main Features.......................................................................................7
3.1.3 Application Scenarios............................................................................7
3.2 External Structure...........................................................................................8
3.2.1 Appearance..........................................................................................8
3.2.2 External Dimensions .............................................................................9
3.3 Internal Structure............................................................................................9
4 Delivery and Storage .....................................................................................12
4.1 Scope of Delivery .........................................................................................12
4.2 Checking for Transport Damages...................................................................13
4.3 Storage........................................................................................................13
5 Transport and Installation ..............................................................................15
5.1 Transport .....................................................................................................15
5.2 Installation Environment Selection .................................................................15
5.3 Preparation Before Installation.......................................................................16
5.4 Installing PVS...............................................................................................17
5.4.1 Installing Hangers ...............................................................................17
5.4.2 Vertically Mounted Combiner Box.........................................................17
5.4.3 Horizontally Mounted Combiner Box.....................................................19
6 Electrical Connection .....................................................................................21
II
6.1 Preparation before Electrical Connections ......................................................21
6.1.1 Opening Cabinet Door.........................................................................21
6.1.2 Power-off Preparation..........................................................................22
6.1.3 Cable Layout ......................................................................................22
6.1.4 Waterproof Terminal and Cable Specification ........................................23
6.2 Input Connections ........................................................................................24
6.2.1 Brief Introduction.................................................................................24
6.2.2 MC4 Connector...................................................................................25
6.2.3 PG Gland Terminal..............................................................................26
6.3 Output Connections......................................................................................28
6.4 Ground Connection ......................................................................................31
6.5 Communication Connection ..........................................................................33
6.5.1 Cable Connection ...............................................................................33
6.5.2 Communication Solution......................................................................34
6.6 Communication Settings ...............................................................................36
6.6.1 Setting Communication Address ..........................................................37
6.6.2 Setting String Access Status ................................................................38
6.7 Start/Stop ....................................................................................................38
7 Commissioning ...............................................................................................39
8 Routine Maintenance .....................................................................................40
8.1 Brief Introduction ..........................................................................................40
8.2 Maintenance Work........................................................................................40
8.3 Fuse Replacement .......................................................................................41
8.4 Sealing Strip Replacement ............................................................................42
9 Troubleshooting ..............................................................................................43
9.1 Before Troubleshooting.................................................................................43
9.2 Common Faults and Corrective Methods........................................................43
10 Appendix .......................................................................................................45
10.1 Technical Data............................................................................................45
10.2 Cable Requirements ...................................................................................47
10.3 Quality Assurance ......................................................................................47
10.4 Contact Information ....................................................................................48
1
1About This Manual
1.1 Validity
This manual is valid for the following PV intelligent combiner boxes:
• PVS-16MH
• PVS-18MH
• PVS-20MH
• PVS-24MH
Unless otherwise specified, any of the above products is hereinafter referred to as "PVS".
1.2 Target Group
This manual is for technical personnel who are responsible for the transport, installation,
and operations of this product. Readers shall meet at least the following requirements:
• Know electronic, electrical wiring and mechanical expertise, and be familiar with
electrical and mechanical schematics.
• Be familiar with the composition and working principles of grid-connected PV power
generation system and the front- and rear-level equipment of the PVS.
• Have received professional training related to the installation and commissioning of
electrical equipment.
• Be familiar with the relevant standards and specifications of the country/region where the
project is located.
• Be familiar with the content of this manual.
Only personnel meeting the above requirements may perform installation, operation and
maintenance, overhaul, and other operations on the PVS. Unauthorized personnel must not
perform any operations on the PVS to avoid accidents.
1.3 How to Use This Manual
Read this manual carefully before transporting and installing the product. Please keep this
manual and other materials of components together, and ensure that relevant personnel can
easily access and use them.
All contents, pictures, marks, and symbols in the manual are owned by SUNGROW. No part
of this document may be reprinted by the non-internal staff of SUNGROW without written
authorization.
2
In order to continuously improve customer satisfaction, products, and product manuals of
SUNGROW are always in the process of improvement and upgrade. If your manual is not in
accord with the product, it may due to the product version upgrade, and the actual product
shall prevail. For any questions, please contact Sungrow Customer Service.
1.4 Symbol Explanations
This manual contains important instructions, which are highlighted with relevant symbols, to
ensure personal and property safety during usage, or to help optimize the product
performance in an efficient way.
Symbols that may be used in this manual are listed below. Please read them carefully to
make better use of this manual.
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 slightly hazardous situation which, if not avoided, may result in minor
or moderate injury.
indicates potential risks that, if not avoided, can lead to device malfunctions or
financial losses.
Indicates additional information in this manual. This information emphasizes or
supplements the content and may provide tips to better use the product, helping
you solve problems or save time.
Always note hazard warnings on the device enclosure.
1 About This Manual User Manual
3
Marks Explanation
High voltage inside! Risk of electric shock by touching it!
Temperature beyond the acceptable range for the human
body. Do not touch it arbitrarily to avoid personal injury.
Protective ground terminal which needs to be firmly grounded
to ensure the safety of operators.
1.5 Model Description
Description of the PVS model is as follows:
Each letter means:
• A: Code of the PVS
• B: Max. number of PV strings in parallel
• C: With monitoring function
• D: High voltage, up to 1,500Vdc
1.6 Other Precautions
This manual takes the PVS-24MH with a wireless communication module as an example.
The installation instructions also apply to following models.
• PVS-16MH
• PVS-18MH
• PVS-20MH
The above models are the same as PVS-24MH in electrical structure, installation method,
and usage. But the number of PV inputs connected to each model varies.
If there is any question, please contact Sungrow.
User Manual 1 About This Manual
4
2Safety Instructions
Please read this chapter carefully when installing and using the PVS. SUNGROW reserves
the right not to assume responsibility and quality assurance for any personal injury or device
damage due to failure to observe these safety precautions.
There is a high voltage in the PV string. Accidental contact may cause fatal electric
shock or severe burns. When wiring the PVS, observe the following safety
precautions:
• Before wiring, please disconnect the end of PV strings.
• Before wiring, do not use an ordinary multimeter to measure the DC voltage. A
multimeter with a withstand voltage of at least 1500V is recommended.
Otherwise, serious damage may follow.
• Please follow all safety instructions of the PV module manufacturer.
Damaged equipment or system failure may cause electric shock or fire!
• Before operation, visually check the equipment for damage or other dangerous
conditions.
• Check whether other external devices or circuit connections are in a safe state.
Make sure the device is in a safe state before operating.
Touching the internal terminals of the equipment may result in electric shock or
fire!
• Do not touch the terminals or conductors connected to the inverter or string.
• Pay attention to all instructions or safety documents regarding the connection
of PVS.
High voltage inside! Risk of electric shock!
• Note and observe the warnings on the product.
• Respect all safety precautions listed in this manual and other pertinent
documents.
5
The grounding cable must be well connected to ground, otherwise:
• It may cause fatal electric shock to the operator in case of failure!
• The equipment may be damaged when struck by lightning!
Incorrect cable connection can cause damage to PV modules, the PVS, and
inverters. When wiring, observe the following precautions:
• Wire according to the wiring drawing.
• Measure the open circuit voltage of strings before wiring to ensure that the DC
input voltage range meets the requirements of the PVS.
• Distinguish the positive and negative polarity of strings before wiring, and
ensure that there is no ground fault.
• Only professional electricians or qualified personnel can operate and wire the
product.
• Operations and wiring must be done in accordance with relevant national and
local standards.
• Warning signs must be legible and should be replaced immediately if damaged.
Make sure that the fastening screws on terminals of the PVS are fastened in place.
If the copper core of the cable cannot be fully contacted with the wiring terminal
and pressed tightly, the terminal will be heated and burned after a prolonged
period. Use stranded copper core flame-retardant cables with the wire diameter
not less than the recommended value in the appendix.
Fasten the screw cap of the waterproof terminal in place, otherwise, it may cause
water leakage and damage to the PVS.
Disconnect loads before checking and replacing fuses! Install or take out fuses
when there is no load connected to avoid arc damage to the equipment and
personal injury.
User Manual 2 Safety Instructions
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Be sure to lock the door after operation.
Do not open the door cover of the PVS frequently to avoid affecting its waterproof
performance.
Touching the PCB or other static sensitive components may cause damage to
components.
• Do not touch other parts inside the cabinet except the terminals during
installation.
• Observe the regulations to protect against electrostatic and wear an anti-static
wrist strap.
2 Safety Instructions User Manual
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