Sungrow PVS-16MH User Manual
Pv intelligent combiner box
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Summary of Contents for Sungrow PVS-16MH
- Page 1 User Manual PV Intelligent Combiner Box PVS-16MH/PVS-18MH/PVS-20MH/PVS-24MH PVS-16MH/PVS-18MH/PVS-20MH/PVS- PV Intelligent Combiner BoxUser 24MH ManualPVS-16_18_20_24MH-UEN- Ver64-202305M-H-002508 PVS-16_18_20_24MH-UEN-Ver64-202305...
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Page 3: Table Of Contents
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... - Page 4 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...
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Page 5: About This Manual
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... -
Page 6: Symbol Explanations
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. -
Page 7: Model Description
• 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. -
Page 8: Safety Instructions
Safety 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. - Page 9 User Manual 2 Safety Instructions 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.
- Page 10 2 Safety Instructions User Manual 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.
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Page 11: Product Description
RS485 or DC PLC communication. 3.1.3 Application Scenarios The PVS in line with outdoor standards developed and produced by SUNGROW is mainly used in large and medium-sized PV plants. It adopts a modular design to achieve fast installation and to ensure a long-term, reliable, and safe grid-connected operation of the PV plant. -
Page 12: External Structure
3 Product Description User Manual figure 3-1 Composition of grid-connected PV generation system table 3-1 Device description Device PV array Inverter Public power grid Logger / Smart monitoring unit External Structure 3.2.1 Appearance Taking PVS-24MH as an example, the appearance of the PVS is shown in the figure below. -
Page 13: External Dimensions
User Manual 3 Product Description Name Description Clasp Mounting Used to fix the PVS hanger Door lock 3.2.2 External Dimensions Taking PVS-24MH as an example, the dimensions of the PVS is shown in the figure below. figure 3-2 Dimensions Internal Structure Taking PVS-24MH as an example, the internal structure of the PVS is shown in the figures below. - Page 14 3 Product Description User Manual figure 3-4 Negative fuseless version * Figures are for reference only. The product received may differ. Description DC fuse holder and fuse Grounding point, for equipotential connection RS485 communication terminal Monitoring panel Load switch/ Circuit breaker DC output wiring terminal Copper bar and wiring hole DC PLC communication module...
- Page 15 User Manual 3 Product Description Description Indicators. From left to right: • RX: Indicator of receiving communication data signal; • TX: Indicator of sending communication data signal; • RUN: Operating status indicator of monitoring unit; • SPD: SPD failure indicator; •...
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Page 16: Delivery And Storage
Delivery and Storage Scope of Delivery Name Description Quantity Related Including certificate, documents warranty card, factory inspection report, user manual, etc. To open the cabinet door of the PVS Bolt assembly M8 x 16... -
Page 17: Checking For Transport Damages
To support the cabinet door when it is open Note1: * means optional. Note 2: Parameters noted with a) apply to PVS-16MH; Parameters noted with b) apply to PVS-18MH; Parameters noted with c) apply to PVS-20MH; Parameters noted with d) apply to PVS-24MH. - Page 18 4 Delivery and Storage User Manual • The storage carrier should be solid enough to bear the weight of the PVS and its outer package. • The number of stacking layers of PVSs cannot exceed the "stacking layer limit" marked on the outer box.
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Page 19: Transport And Installation
Transport and Installation Transport Outer Package Dimensions Six PVSs are transported as a group. Two PVSs on each layer and three layers in total, as shown in Figure 5-1. figure 5-1 Outer package dimensions Width (W) Height (H) Depth (D) 1740 mm 1240 mm 1100 mm... -
Page 20: Preparation Before Installation
5 Transport and Installation User Manual • For large-scale utility plant projects, the PVS should be vertically installed in a dark place on mounting brackets of PV modules. Reserve sufficient space around the PVS for better heat dissipation and easier daily maintenance. Moisture during the installation process will cause damage to the PVS. -
Page 21: Installing Pvs
User Manual 5 Transport and Installation General Tools M10 electric φ11 impact drill Wire stripper screwdriver M10 screwdriver MC4 terminal Hydraulic clamp wrench Crimping tool Wire cutter Installing PVS The PVS is fixed to the installation plane by hangers. Therefore, ensure that hangers are installed to the back of the PVS before fixing the PVS to the installation plane. - Page 22 5 Transport and Installation User Manual step 2 Anchor the PVS to the bracket in the sequence shown in the figure below, where the recommended torque is: 51±0.7 N.m. - - End Name Description M10 bolt Beyond the scope of delivery Spring washer Beyond the scope of delivery Flat washer...
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Page 23: Horizontally Mounted Combiner Box
User Manual 5 Transport and Installation Follow-up processing The combiner box can be opened or closed through the clasp, the position of the clasp is shown in Figure A below. When installing other components, such as cable guards, make sure that other components do not affect the normal operation of the clasp. Claps is not closed tightly, the equipment in the combiner box may be damaged, or even the combiner box may fail. - Page 24 5 Transport and Installation User Manual When horizontal installation is adopted, it is necessary to fix the positioning holes on the back of the PVS with those on the installation plane (such as bracket). The distances between positioning holes on the back of the PVS are as shown above. step 1 Drill holes in the mounting brackets in advance according to the above distances.
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Page 25: Electrical Connection
Electrical Connection Preparation before Electrical Connections Electrical connections between devices inside the inverter have been performed before delivery. On site, the connections between the inverter and external devices need to be performed, including DC connection, AC connection and communication connection. 6.1.1 Opening Cabinet Door To prevent moisture from entering the cabinet, do not open the cabinet door in rainy or snowy days. -
Page 26: Power-Off Preparation
6 Electrical Connection User Manual - - End 6.1.2 Power-off Preparation step 1 Check whether the load switch / circuit breaker of the PVS is in the "OFF" position. step 2 Disconnect the fuse. The fuse has been installed in the fuse holder before delivery. Before electrical connection, pull out the fuse holder to disconnect the fuse. -
Page 27: Waterproof Terminal And Cable Specification
User Manual 6 Electrical Connection Name Cable trench Supporting arm of positive output cable Supporting arm of negative output cable Supporting arm of communication cable Note: Figures here are for reference only, and users can make adjustment as needed. 6.1.4 Waterproof Terminal and Cable Specification Waterproof Terminal and Cable Specification Cable Outer Description... -
Page 28: Input Connections
6 Electrical Connection User Manual Note 2:The two positive (negative) input cables can be connected to the same waterproof terminal according to actual needs, as shown in the following figure. Note 3:The above terminals and models are all based on the standard version of the PVS. Please refer to the ordering agreement for details. -
Page 29: Mc4 Connector
User Manual 6 Electrical Connection PVS Input Terminal Internal Design Wiring Reference With a negative fuse "6.2.3 PG Gland Terminal" PG Gland terminal Without a negative fuse With a negative fuse "6.2.2 MC4 Connector" MC4 connector 6.2.2 MC4 Connector step 1 Strip off the insulation layer of 10mm from the positive and negative DC cables. step 2 Assemble the cable ends with crimp contacts by the crimping tool. -
Page 30: Pg Gland Terminal
6 Electrical Connection User Manual —Connect the negative input cable as shown below. Negative input terminal Negative Input cable Sealing cover After wiring, it is strictly prohibited to seal the gap between cables and the MC4 connector with fireproof mud. - - End 6.2.3 PG Gland Terminal step 1 Loosen nuts of "INPUT DC +”... - Page 31 User Manual 6 Electrical Connection Strip off the cable insulation layer using the wire stripper to reveal the copper core. Press-fit the cable and a cord-end terminal. figure 6-1 Positive input wiring step 4 Negative wiring —For the negative fuse version, the wiring method is the same as that of the positive wiring. Connect the cable to the “PV1-”...
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Page 32: Output Connections
6 Electrical Connection User Manual figure 6-2 Negative input wiring - - End Output Connections Preparation Before Wiring Unscrew the waterproof terminals at the DC output port of the PVS. Open the protective cover of the output terminals. Overview of Wiring Area... - Page 33 User Manual 6 Electrical Connection Note: The figure is for reference only and the actual product shall prevail. step 1 Lead the “DC +” cable through the "OUTPUT DC (+)" waterproof terminal. Enough cable bending space should be ensured. step 2 Strip the protective layer and insulation layer of the cable to expose the copper core of L ≈ 25mm, crimp the cable to the appropriate DT terminal, and tighten them with a heat shrinkable tubing.
- Page 34 6 Electrical Connection User Manual figure 6-3 Schematic of copper wire connection Copper Spring Copper bar M12 bolt Flat washer terminal washer When aluminum wire is used, fix the DT terminal to the output terminal in an order figure 6-4 Schematic of aluminum wire connection Copper- aluminum Spring...
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Page 35: Ground Connection
User Manual 6 Electrical Connection Make sure that fastening screws on terminals are fastened in place. If the copper core has not been fully and tightly contacted with the wiring terminal, long-time work may burn the terminal. Use stranded copper core flame-retardant cables with the wire diameter not less than the recommended value in the appendix. - Page 36 6 Electrical Connection User Manual table 6-1 Wiring requirements Riveting Screw Specifications Recommended cable 16mm 95mm specifications Stripping length L 15 mm 25 mm Tightening torque 4.4±0.4N.m 20.5±2.5N.m Connection Method step 1 Loosen the nut of grounding waterproof terminal. step 2 Lead the yellow green cable through waterproof terminal, leaving a proper margin in cable length.
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Page 37: Communication Connection
User Manual 6 Electrical Connection Communication Connection 6.5.1 Cable Connection The communication terminals inside the PVS are shown below. Upper terminals are for input cable connection and lower terminals are for output cable connection. User may adjust the connection according to real need. step 1 Loosen the waterproof terminals of "MONITOR INPUT"... -
Page 38: Communication Solution
6 Electrical Connection User Manual —Insert RS485-A into A1; —Insert RS485-B into B1; —Insert the shielded layer of the communication cable into FG. step 6 Pull out the screwdriver so that wires are firmly pressed by leaf springs. step 7 Follow the same steps to insert the output cable into A2, B2 and FG at the lower part respectively. - Page 39 User Manual 6 Electrical Connection • A2 and B2 of PVS 1 are connected to A1 and B1 of PVS 2; • A2 and B2 of PVS 2 are connected to A1 and B1 of PVS 3; And so forth, A2 and B2 of the PVS n-1 are connected to A1 and B1 of PVS n. The 120Ω...
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Page 40: Communication Settings
6 Electrical Connection User Manual Blocking the waterproof vent valve may cause condensation in the combiner box and even damage the equipment inside the combiner box. Communication Settings Communication parameters of the PVS can be set and viewed on the monitoring panel. LED Screen The LED screen on the monitoring panel is used to display relevant electrical parameters and communication parameters. -
Page 41: Setting Communication Address
User Manual 6 Electrical Connection table 6-2 Function description of buttons (PVS-24MH as an example) Graphics Description Function Short press K1 to see the voltage and current information on the LED screen. The first two digits Indicate the branch number of the input, and the last three digits indicate the current value of the branch. -
Page 42: Setting String Access Status
6 Electrical Connection User Manual 6.6.2 Setting String Access Status Types of standard PVS researched by SUNGROW are as follows: • PVS-16MH • PVS-18MH • PVS-20MH • PVS-24MH If the number of strings connected is the same as the number in the PVS model, skip this step. -
Page 43: Commissioning
Commissioning Follow the steps below to check whether the PVS operates normally after installation: step 1 Connect the wiring terminals of each PV input. step 2 Measure the input voltage between positive and negative polarities of each input to make sure they are basically same and there is no reverse connection. -
Page 44: Routine Maintenance
Routine Maintenance Brief Introduction Due to the influence of ambient temperature, humidity, dust and vibration, the internal components of the PVS will age and wear, which may lead to potential failures of the PVS. Therefore, it is necessary to implement daily and regular maintenance on the PVS to ensure its normal operation and service life. -
Page 45: Fuse Replacement
User Manual 8 Routine Maintenance The recommended routine maintenance periods in the table are only for reference. The actual maintenance period shall be determined reasonably in consideration of the specific installation environment of the product. Power plant scale, location, site environment, and other factors also affect the maintenance period of the product. -
Page 46: Sealing Strip Replacement
The internal sealing strip wraps around the door, shown as “A” in the figure below. It is recommended to check the sealing strip regularly. If there is any damage caused due to non-human factors, please contact SUNGROW immediately to replace the door and the sealing strip. -
Page 47: Troubleshooting
5V; No 5V output from switching “POWER” is off Otherwise, the switching power board power board is faulty and please contact SUNGROW for maintenance. "RUN" is steady on or Contact SUNGROW to CPU board failure steady off... - Page 48 Please contact SUNGROW if the problem is not resolved. Note: *It applies only to products with DC PLC communication modules.
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Page 49: Appendix
10 Appendix 10.1 Technical Data PVS-16MH /PVS-18MH Electric Parameters PVS-16MH PVS-18MH Max. PV string voltage 1500V Max. PV string parallel inputs Rated fuse current of each string 20A/25A/30A/32A/35A (Optional) Rated current of load switch 400A 1500 Vdc Type II (Optional: Type I+II) - Page 50 10 Appendix User Manual PVS-20MH / PVS-24MH Electric Parameters PVS-20MH PVS-24MH Max. PV string voltage 1500V Maximum number of input channels Rated fuse current of each string 20A/25A/30A/32A 20A/25A (Optional) Rated current of load switch 400A Lightning arrester 1500 Vdc Type II (Optional: Type I+II) Input terminal type PG Gland / MC4 terminal Output cable specification...
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Page 51: Cable Requirements
• The customer shall give SUNGROW a reasonable period to repair the faulty device. Exclusion of Liability In the following circumstances, SUNGROW has the right to refuse to honor the quality guarantee: • The free warranty period for the whole machine/components has expired. -
Page 52: Contact Information
The fault or damage is caused by installation, repairs, modification, or disassembly performed by a service provider or personnel not from SUNGROW. • The fault or damage is caused by the use of non-standard or non-SUNGROW components or software. •... - Page 53 Sungrow Power Supply Co., Ltd. www.sungrowpower.com...