Sungrow PVS-24MH User Manual
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Sungrow PVS-24MH User Manual

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

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Summary of Contents for Sungrow PVS-24MH

  • Page 1 User Manual PVS-24MH/20MH/16MH PV Array Combiner Box PVS-24MH_20MH_16MH-UEN-Ver20-202007...

  • Page 3: Table Of Contents

    Contents About This Manual .............. 1 Validity ..................1 Target Readers ................. 1 How to Use this Manual ............1 Others ..................2 Symbol Explanation ..............2 Figures Explanation ..............3 Safety Instructions .............. 4 Product Description ............8 System Introduction ..............8 Main Features ................
  • Page 4 Internal Structure ..............20 Waterproof Terminal ..............22 Wiring Preparations ..............24 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 Cable Layout ................35 Communication Settings ............36 5.6.2 Setting Communication Address ..........
  • Page 5 Cable Requirement ..............47 Quality Assurance ..............47 Contact Information ..............49...

  • Page 7: About This Manual

    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".

  • Page 8: Others

    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.

  • Page 9: Figures Explanation

    User Manual 1 About This Manual 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.

  • Page 10: Safety Instructions

    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! ...
  • Page 11 User Manual 2 Safety Instructions 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.
  • Page 12 2 Safety Instructions User Manual  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.
  • Page 13 User Manual 2 Safety Instructions Touching or improper operation on the PCB or other sensitive components may damage the device. Do not touch any parts inside the cabinet other than the connection terminals. Respect all ESD related safety regulations and wear antistatic wrist strap.

  • Page 14: Product Description

    3 Product Description 3.1 System Introduction For a large-scale grid-connected PV system, it is common to install a DC combining device between PV modules and inverters to minimize cable connections, facilitate maintenance and enhance reliability. PVS is designed for meeting these requirements, which provides a Turnkey solution for PV plant systems.

  • Page 15: Main Features

    User Manual 3 Product Description Tab. 3-1 Device in above figure Device PV arrays PV Array combiner box Inverter Logger/Smart monitoring unit Meteo Station Grid 3.2 Main Features  Meet outdoor installation requirement  Connect to multiple PV inputs with fuse for each input (can be replaced to other degree) ...

  • Page 16: Dimensions

    Monitoring function PVS-24MH PVS-20MH PVS-16MH 3.4 Dimensions The dimensions of the PVS are shown in the figure below (take PVS-24MH for example). 3.5 Identifying the PVS The appearance of the PVS is shown in the figure below (take PVS-24MH for...
  • Page 17 User Manual 3 Product Description example). Name Description Lockhole...

  • Page 18: Mechanical Installation

    4 Mechanical Installation 4.1 Scope of Delivery Name Note Quantity Including test report, Related documents Quality Certificate, Warranty card, Manual, etc. Keys To open the cabinet of PVS. Bolt kit M8 x 16 Need to be installed to the PVS Hanger cabinet onsite.

  • Page 19: Storage

    User Manual 4 Mechanical Installation Note 2: a) is intended for PVS-16MH; b) is intended for PVS-20MH; and c) is intended for PVS-24MH. 4.2 Storage If combiner boxes are not put into operation immediately, they need to be stored under specific environmental conditions: ...

  • Page 20: Installation Site Requirements

    5 Electrical Installation User Manual Caution It is strictly prohibited to store combiner boxes without packaging! It is strictly prohibited to store combiner boxes outdoors or in direct sunlight! It is strictly prohibited to tilt or overlap the equipment! Caution After long-term storage and before installation of combiner box, carry out a thorough inspection to determine whether they are in good condition.

  • Page 21: Installation Tools

    User Manual 4 Mechanical Installation Humidity during installation may damage the PVS. Do not install the PVS during rainy or humidity days. Screw the water-proof terminals tightly to prevent moisture penetration no matter vertical installation or horizontal installation. Seal the unused terminals after cable connection.

  • Page 22: Installing Pvs

    5 Electrical Installation User Manual Vacuum cleaner Heat shrink tubing Heat gun Installation tools φ11 Hammer drill Electric M10 Screwdriver Wire stripper screwdriver Hydraulic pliers Crimping tool terminal Wire cutter wrench 4.5 Installing PVS Overview The PVS is fixed to the installation surface via the hangers in the scope of delivery.
  • Page 23 User Manual 4 Mechanical Installation 4-Φ12 x 25 Fixing PVS to Installation Surface On site, the PVS can be installed on the bracket or the back of the PV module. Step 1 Mark positions on the back of the PV module according to the distance between the hangers, and drill holes according to the marks.
  • Page 24 5 Electrical Installation User Manual Item Name Description Spring washer PVS hangers PV module bracket Additional Information Combiner boxes can be installed in environments such as power stations floating on water. If installed in this scenario, horizontal installation is recommended. When horizontal installation is adopted, it is necessary to fix the positioning holes on the back of the combiner box with the positioning holes on the installation plane (such as bracket).
  • Page 25 User Manual 4 Mechanical Installation situation on site.)

  • Page 26: Electrical Installation

    5 Electrical Installation 5.1 Internal Structure There are two versions of the combiner box: version 1 and version 2. Taking PVS-24MH as an example, the corresponding internal structures are as follows. Fig. 5-1 Version 1...
  • Page 27 User Manual 5 Electrical Installation Fig. 5-2 Version 2 Description DC+ fuse cartridge Ground copper bar RS485 ports DC- fuse cartridge The monitoring board SPD (Surge protection device) Load-break switch * The figure and the configurations are for reference only, and the actual product shall prevail.

  • Page 28: Waterproof Terminal

    5 Electrical Installation User Manual Description From left to right, the indicators are respectively:  TX: Transmitted communication data signal indicator  RX: Received communication data signal indicator  RUN: Monitoring unit running status indicator  SPD: Surge protection device fault indicator ...
  • Page 29 User Manual 5 Electrical Installation Outer diameter of Identification Description Model cable (mm) M24* 4.5~6 Positive pole input INPUT DC+ terminal MC4** 4.7~6.4 M24* 4.5~6 Negative pole input INPUT DC- terminal MC4** 4.7~6.4 Waterproof MONITOR INPUT communication input terminal PG-11 5~10 Waterproof MONITOR...

  • Page 30: Wiring Preparations

    5 Electrical Installation User Manual 5.3 Wiring Preparations Open the door. Step 1 Remove the protection cover. Step 2 Turn the load-break switch to the "OFF" position. Step 3 Fig. 5-3 Load-break switch state Step 4 Disconnect the fuse which has been installed in the fuse holder before delivery.

  • Page 31: Connections

    User Manual 5 Electrical Installation 5.4 Connections 5.4.1 Input Connections Lethal electric shock or serious burn from high voltage present on PV string! Observe the following safety instructions related to the wiring operations:  Before starting wiring, disconnect the cable connection on the end of the PV string.
  • Page 32 5 Electrical Installation User Manual Assemble the cable ends with crimp contacts by crimping pliers. Step 2 Connect the cables according to the method illustrated below. Pull the Step 3 cable gently to make sure it is secured. − Connect the positive input cable according to the figure below. Positive input terminal positive input cable Sealing cover...
  • Page 33 User Manual 5 Electrical Installation Gland Terminal Loosen the "INPUT DC+" union nut of gland terminals. Step 1 Insert the “PV1+” cable through terminals of "INPUT DC+", and connect Step 2 the cable to the “PV1+” terminal inside the device. Enough wire bending space should be ensured.

  • Page 34: Output Connections

    5 Electrical Installation User Manual As shown in the following figure, connect the terminal to the Step 6 corresponding terminal of the PVS. Follow the same procedure to connect the rest of cables. Comb all the input cables together with cable ties and firm them onto the cable support bar. Appropriate cable bending space shall be ensured.
  • Page 35 User Manual 5 Electrical Installation Wiring Procedure Insert the “DC+” cable through “OUTPUT DC（+）” terminal. Enough Step 1 cable bending space should be ensured. Peel off the protective layer and insulating layer of the cable to expose Step 2 the copper core part of the conductor L ≈ 25mm, crimp the cable to the appropriate DT terminal, and tighten it with a heat shrinkable sleeve.

  • Page 36: Grounding Connections

    5 Electrical Installation User Manual Fig. 5-6 Schematic of aluminum wire connection Copper Copper-aluminum Flexible Flat M12 bolt transition terminal gasket gasket Screw the bolt of the gland terminal tight clockwise. Step 4 Make sure that the nuts have been screwed into place. If the cable conductor has not been connected firmly, long-time work may burn the terminal.
  • Page 37 User Manual 5 Electrical Installation  Relevant standards must be observed.  Ground cables must be connected firmly with both device and ground terminals.  Ground resistance shall be measured after finishing ground connections, and the measured values should not be over 1Ω. Description of Wiring Terminals The internal grounding points of the combiner box are shown in the following figure.
  • Page 38 5 Electrical Installation User Manual Cable connection method Loosen the union nuts of “ ” gland terminals. Step 1 Insert the green-yellow wire from the device outside into the “ ” gland Step 2 terminal, then pull the wire and connect it to the inner terminal. Enough wire bending space should be ensured.

  • Page 39: Communication Connections

    User Manual 5 Electrical Installation 5.4.4 Communication Connections Refer to the figure below for communication terminals inside the PVS. A1,B1,FG A2,B2,FG Upper terminal connects to input and lower terminal connects to output. User may adjust according to real need. Unscrew gland terminals "MONITOR...
  • Page 40 5 Electrical Installation User Manual Follow the same steps to connect the output cables to the A2, B2 and FG, Step 7 to finish the communication connection. Communication cable must be shielded twisted pair cable. Communication unstable or communication failure may follow if otherwise. Communication cable should be far away from the high voltage cable.

  • Page 41: Cable Layout

    For details, refer to "5.5 Cable Layout". After installation or commissioning, ensure the door and the cover of the key is locked to avoid the water is in. If such a situation occurs, Sungrow takes no responsibility for this. 5.5 Cable Layout Lay the cables connected the PVS and external devices in the cable trench for easy installation and maintenance.

  • Page 42: Communication Settings

    5 Electrical Installation User Manual Name Cable trench Positive output cable supporting arm Negative output cable supporting arm Communication cable support arm Note: pictures here is indicative only, user can make adjustment according to real needs. 5.6 Communication Settings The communication parameters of the combiner box can be set and viewed on the monitoring panel.

  • Page 43: Setting Communication Address

    User Manual 5 Electrical Installation Tab. 5-2 Function description of the key buttons (using 24 inputs as example) Parameter type Figure Descriptions display divided into the first two digits and last three digits. The first two digits are used to display the parameter type;...

  • Page 44: Setting String Input Number

    In this section, brief description is given by using an example in which the device type is PVS-24MH and the number of strings actually connected is 23. Step 1 Press and hold K2 for 2s until the last three digits of the LED display "P=0"...

  • Page 45: Commissioning

    6 Commissioning Check if the PVS can operate normally after installation: Connect the connection terminal of each PV string. Step 1 Measure the input voltage of positive pole and negative pole of each Step 2 input to make sure they are basically same and the positive pole and negative pole are connected correctly.

  • Page 46: Routine Maintenance

    7 Routine Maintenance 7.1 Overview Due to ambient temperature, relative humidity, windblown dust and vibrations, components of PVS will get aging. It is necessary to do the routine maintenance work periodically on the device. Only qualified electricians can do the maintenance work described in this chapter.

  • Page 47: Replace The Sealing Strip

    7.3 Replace the Sealing Strip The sealing strip inside the PVS is located in the PVS internal door cover, as shown by A in the figure. If it is damaged by non-human factors, please contact Sungrow immediately to replace the PVS door cover.
  • Page 48 7 Routine Maintenance User Manual...

  • Page 49: Troubleshooting

    8 Troubleshooting 8.1 Before Troubleshooting Please notice the following items before troubleshooting:  Disconnect the load-break switch before operation.  Please do not touch the bare metal parts of the copper bar under the protection plate.  Pull the fuse holder for maintenance of the combining busbar and to disconnect the input cable.
  • Page 50 9 Troubleshooting User Manual Fault Possible cause Method of correction Check voltage on monitoring unit +5V plug, which shall be output "POWER" does not about 5V; otherwise switching switching power light up. power supply board is faulty supply board and please contact us for repair.
  • Page 51 Load-break switch status indicator POWER Monitoring unit power supply status indicator +5V plug on the monitoring unit If there are any problems in using the PVS, please contact Sungrow. E-mail address: service@sungrowpower.com For better service, please provide us with the following information: ...

  • Page 52: Appendix

    9 Appendix 9.1 Technical Data Model PVS-16MH PVS-20MH PVS-24MH Max. PV string voltage 1500Vdc Max. PV string parallel inputs Rated fuse current for 15 A / 20 A each string (replaceable) 1500 Vdc, type 2 Input cable PG terminal/ MC4terminal...
  • Page 53 Where any fault occurs during the warranty period, Sungrow will maintain or replace the product for free. Evidence Sungrow Power Supply Co., Ltd. needs the users to provide the receipt invoice and the date you purchase. Meanwhile the trademark should be clearly legible.
  • Page 54 9 Appendix User Manual Otherwise Sungrow Power Supply Co., Ltd. has the right to exclude liability claims. Conditions The original unqualified product should return to Sungrow.   Users should permit appropriate time to maintenance the device with fault for Sungrow.
  • Page 55   Serial number of the product  Fault code/name  Brief description of the problem China (HQ) Australia Sungrow Power Supply Co., Ltd Sungrow Australia Group Pty. Ltd. Hefei Sydney +86 551 65327834 +61 2 9922 1522 service@sungrowpower.com service@sungrowpower.com.au...
  • Page 56 9 Appendix User Manual Tokyo Seoul +827077191889 + 81 3 6262 9917 service@kr.sungrowpower.com japanservice@jp.sungrowpower.com Malaysia Philippines Sungrow SEA Sungrow Power Supply Co., Ltd Selangor Darul Ehsan Mandaluyong City +6019897 3360 +639173022769 service@my.sungrowpower.com service@ph.sungrowpower.com Thailand Spain SungrowThailand Co., Ltd. Sungrow Ibérica S.L.U.

This manual is also suitable for:

Pvs-20mhPvs-16mh

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