Sungrow SunBox PVS-8M User manual

SunBox PVS-8M/PVS-16M
PV Array Combiner Box
User Manual

Contents
1About This Manual ...................................................................1
1.1Contents....................................................................................................................1
1.2Target Readers ........................................................................................................1
1.3How to Use this Manual.......................................................................................1
1.4Other Information .................................................................................................2
1.5Symbol Explanation..............................................................................................2
1.6Picture Explanation ...............................................................................................3
2Safety Instructions...................................................................4
3Product Description.................................................................8
3.1System introduction .............................................................................................8
3.2Demonstration of the type.................................................................................9
3.3Identifying the PVS............................................................................................. 10
3.4Fuse rating............................................................................................................. 11
3.5DC switch rating.................................................................................................. 11
4Installation Guide ..................................................................12
4.1Checking before installation........................................................................... 12
4.2Mechanical installation..................................................................................... 12
4.2.1 Dimensions............................................................................................................... 12
4.2.2 Installation site requirements............................................................................ 13
4.2.3 Preparation before Installation......................................................................... 13
4.2.4 Installation Method............................................................................................... 14
4.3Electrical installation.......................................................................................... 16
4.3.1 Internal structure.................................................................................................... 16
4.3.2 Water-proof terminals and wirings.................................................................. 17
4.3.3 Wiring preparations............................................................................................... 18
4.3.4 Input wiring and connections........................................................................... 19
4.3.5 Output wiring and connections....................................................................... 22
4.3.6 Ground wiring and connections ...................................................................... 24

4.3.7 Communication Connections ........................................................................... 24
4.3.8 Installation of fuses................................................................................................ 27
4.3.9 Bottom wirings........................................................................................................27
4.4Communication address settings................................................................. 28
4.5Start/Stop of operation .................................................................................... 31
5Commissioning.......................................................................32
6Routine Maintenance.............................................................33
6.1Replace the Fuse................................................................................................. 33
6.2Replace the sealing strip.................................................................................. 34
7Troubleshooting.....................................................................35
7.1Before troubleshooting.................................................................................... 35
7.2Common faults and troubleshooting ......................................................... 35
8Appendix ................................................................................38
8.1Technical data...................................................................................................... 38
8.2Cable requirements ........................................................................................... 39
8.3Quality Assurance............................................................................................... 39
8.4About us................................................................................................................. 41

1
1 About This Manual
1.1 Contents
Safety instructions
Safety instructions for the installation, operation, commissioning and
maintenance of PVS.
Product description
Location of PVS in the PV system, structure, function and classification.
Installation guide
The installation methods and electrical connections of PVS.
Routine maintenance
How to replace the fuses of PVS.
Others
Technical data of PVS, exclusion of liability and the way to contact us.
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 documents before installation of 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 converter edition.

1 About This Manual User Manual
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1.4 Other Information
To satisfy your requirements, we have also provided PVS-6M and PVS-12M with a DC
input string number of 6 and 12 respectively. Their electrical structure, installation
and use are the same with those of SunBox PVS-8M/PVS-16M.
This manual takes SunBox PVS-8M/PVS-16M for example. For installation and
operation of combiner box with other inputs, please refer to this manual.
In actual application, if the PV string input numbers are not 8, 12, or 16,
user needs to set related parameters from the monitoring board of the
PVS to ensure its normal operation. For detailed setting methods, please
refer to “chapter 4.4”.
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.
CAUTION indicates a hazard with a low level of risk which, if not avoided,
will result in minor or moderate injury.

User Manual 1 About This Manual
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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 Picture Explanation
Pictures used in this manual all take the PVS with standard configuration for
example.
The real PVS you received may differ from the example pictures in the numbers of
the installation hangers and etc. please refer to the actual product you receive.

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2 Safety Instructions
This chapter describes some important safety instructions about SunBoxPVS.
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;
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.
Death or burning hazard by touching the internal terminals of the device!
Do not touch the terminals or conductors in contact to the inverter or PV
string.
Observe all the instructions and safety regulations related to PVS
connection.

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High voltage is present inside the device!
Follow all the warning signs in the device.
Respect all the safety instructions in this manual and other documents.
The ground cable must be grounded properly, otherwise,
lethal electric shock happens to the operator or installer once a fault
occurs.
device may be damaged after lightening stroke.
Incorrect cable connection may cause damages to the PV cells, combiner
box and inverter. Respect the following instructions during cable
connection:
Connect by strictly following the circuit diagram;
Measure and make sure the string open-circuit voltage meets the
requirements of the combiner box before inserting the fuse;
Identify the positive pole and negative pole before connection.
Only qualified personnel or professional electrician can perform the
operation and wiring described in this manual.
All operations and wirings must in full accordance with the national and
local standards and requirements.
All warning marks and labels must be clear and intact. Replace them if any
damages are found.

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Make sure the terminals are firmly connected during wiring. If the cable
copper core and the terminals are not connected firmly, terminals will be
over-heating and burnt. Anti-flaming cables with multi-strand are advisable
and the cable cross-sectional area should be no less than the recommended
value.
The nuts of the water-proof terminals must be firmly screwed to prevent
water leakage and PVS damages.
Pull the fuse out of the fuse holder for personal and device safety.
Watch out during fuse replacement. Do not touch the fuse with bare hands.
Do not bring any metallic materials during fuse replacement. Replace only
one fuse at one time. Once the one fuse is replaced, check to make sure the
new one is installed firmly and then replace the next one.
The fuse is under high voltage both from the inverter and the PV array. Do
not touch the fuse during device operation.
Disconnect the DC circuit breaker before checking or replacing the fuse.
Notice that all terminals of the DC circuit breaker contain high voltage.
Measure by using proper tools that the current of each input is zero before
replacing the fuse.
Lock the cabinet door and seal the water-proof cover of the lock core after
operation. In rooftop horizontal installation site, fix the auxiliary protection
set of the cabinet with bolts.
No not open the cabinet door frequently.