Related Manuals for Sungrow MVS6400-LV
Summary of Contents for Sungrow MVS6400-LV
- Page 1 System Manual MV Station MVS6400–LV/MVS8850–LV/MVS8960–LV MVS6400–LV/MVS8850–LV/MVS8960–LV MV StationSystem ManualMVS6400_8850_8960-LV- SEN-Ver12-202212M-H-002652 MVS6400_8850_8960-LV-SEN-Ver12-202212...
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Page 3: Table Of Contents
Contents 1 About This Manual ...................1 1.1 Validity......................1 1.2 Demonstration of the Model................1 1.3 Target Group ....................1 1.4 How to Use This Manual .................2 1.5 Symbols Explanation ..................2 2 Safety Instructions ....................4 2.1 General Safety Rules..................4 2.2 Ground Fault Protection ..................5 2.3 Live Line Measurement...................5 2.4 Measuring Instrument ..................5 2.5 Voltage-free Operations ..................6... - Page 4 4.1 Identifying the MV Station................18 4.2 Checking for Transport Damages..............18 4.3 Storage......................18 5 Mechanical Installation ..................20 5.1 Transport .....................20 5.2 Hoisting the MV Station.................21 5.2.1 Safety Precautions ................21 5.2.2 Hoisting....................22 5.2.3 Fastening of Connectors..............23 5.3 Foundation....................24 5.3.1 Selection of Installation Site ..............24 5.3.2 Recommended Foundation Construction Plan........24 5.3.3 Securing the MV Station(optional) ............25 5.4 Installation Verification ..................26...
- Page 5 7.1.2 MV Switchgear..................40 7.1.3 MV Transformer ..................41 7.1.4 LV Cabinet ..................43 7.2 Power-on Steps....................43 8 Troubleshooting ....................44 9 Routine Maintenance ..................46 9.1 Safety Instructions ..................46 9.2 Maintenance ....................47 9.2.1 Introduction ..................47 9.2.2 Maintenance Interval ................47 9.3 Checking and Cleaning the Filter ..............49 9.3.1 Checking and Cleaning the Air Inlets ............49 9.3.2 Checking and Cleaning Air inlets of the Heat Exchanger ......50 9.4 Oil Drain ......................51...
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Page 7: About This Manual
About This Manual Validity This manual is intended for the following product: • MVS6400-LV • MVS8850-LV • MVS8960-LV Hereinafter it will be referred to as " MV Station" unless otherwise specified. Demonstration of the Model Rated power Model Devices can be connected 6400 kVA@40℃... -
Page 8: How To Use This Manual
All rights reserved including the pictures, symbols, and identifiers used in this manual. Any reproduction or disclosure, even partially, of the contents of this manual is strictly prohibited without prior written authorization of Sungrow. Symbols Explanation This manual contains important safety and operational instructions that must be accurately understood and respected during the installation and maintenance of the equipment. - Page 9 System Manual 1 About This Manual The symbols below may be found on the electrical parts of the inverter. Make sure to read the following symbols and fully understand them before installing the equipment. Symbol Explanation Lethal voltage inside! Do not touch! Hot surface! Do not touch the hot surface of the device.
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Page 10: Safety Instructions
Safety Instructions Read the safety instructions carefully before installing the MV Station. Refer to corresponding manuals for the safety instructions on the internal devices. General Safety Rules Touching the terminals or contactors connected to the grid may lead to electric shock! •... -
Page 11: Ground Fault Protection
System Manual 2 Safety Instructions The locking device on the pressure relief valve must be removed before operation. refer to "" " 7.1.3 MV Transformer" " ". The installation, electrical connection, commissioning, maintenance, and troubleshooting must be carried out by professional electrical technicians conforming to local codes. -
Page 12: Voltage-Free Operations
2 Safety Instructions System Manual • The instrumentfor measuring the electrical parameters should be a high-quality instrument with sufficient measuring range. • Make sure the connection and use of the instrument are correct to avoid arc and other dangerous situations. •... -
Page 13: Safety Warning Signs
System Manual 2 Safety Instructions Safety Warning Signs During transport, installation, maintenance, and troubleshooting of the MV Station, keep unauthorized persons away. • Post warning signs near the MV Station upstream and downstream switches to prevent inadvertent connection. • Place necessary warning signs or barriers near the on-site operation areas. Daily Operation and Maintenance Make sure the doors of the MV Station are closed and locked during daily operation to prevent internal devices from damages caused by rain or rodents. -
Page 14: Others
All the descriptions in this manual are for the standard MV Station. Please inform us in the purchase order if you have specific requirements. The actual product you receive may differ. This manual may not cover all possible situations. Should a specific problem not explained in this manual occur, please contact Sungrow. -
Page 15: Product Description
Product Description System Overview The MV Station is mainly applied to large-and-medium PV power station. The MV Station can meet the modular design and quick installation requirements of the large-and-medium PV power station and can ensure the long-term, reliable, and safe power generation compliant with the grid. -
Page 16: External Design
3 Product Description System Manual External Design 3.2.1 MV Station Views Version 1 Version 2... -
Page 17: Composition
System Manual 3 Product Description 3.2.2 Composition Description Name Including low voltage connection area, low voltage cable LV room entries, etc. It can be connected to the PV grid- connected inverters. Including a MV transformer. Transformer room The MV transformer converts the inverter output low- voltage into grid-compatible medium-voltage. -
Page 18: Internal Design
3 Product Description System Manual Internal Design 3.3.1 Internal Composition Name LV cabinet MV Transformer MV switchgear Communication box and power distribution cabinet 3.3.2 Cable Entries Top View... -
Page 19: Internal Devices
System Manual 3 Product Description Description Name All LV side cables connecting the MV Station go LV side cable entries inside through these entries. All MV side cables connecting the MV Station go MV side cable inside through these entries. entries Communication &... - Page 20 3 Product Description System Manual Main switch can only be closed when there is a lock, and the lock cannot be pulled out after closing. 3.3.3.2 Transformer Room The transformer room mainly includes a transformer inside. The transformer integrates accessories such as pressure relief valve, tap changer, oil level indicator, oil temperature indicator, oil filling valve, and oil drain valve.
- Page 21 System Manual 3 Product Description Figure Description Name The alarm temperature is set to 95℃. When the oil temperature reaches the value, alarm signals will be sent to the intelligent power distribution cabinet or a communication unit provided by the customer.
- Page 22 3 Product Description System Manual Parameters marked with a) and b) are factory default values and can be adjusted according to actual condition. 3.3.3.3 MV Room The MV room includes a switchgear inside. The switchgear consists of load switch cabinet, circuit breaker cabinet, and direct cable connection cabinet.
- Page 23 System Manual 3 Product Description The figure above is indicative only, and actual product may differ. Description Ethernet switch Fiber terminal box Power Distribution Cabinet The exterior appearance and internal components of the cabinet are shown in figure below. The figure above is indicative only, and actual product may differ. Description Power distribution area Rotary switch...
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Page 24: Identify And Store The Mv Station
Therefore, once you receive the MV Station, a detailed inspection is necessary. If any damage is detected, contact the forwarding company or Sungrow immediately. Examine the contents of the shipment to check the scope of delivery for completeness. - Page 25 System Manual 4 Identify and Store the MV Station • If the MV Station has to be stored outdoors, elevate the MV Station base according to the geological and ambient conditions. • When the ambient temperature is too low, heat the MV Station internal devices. Temperature: -40℃~+70℃.
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Page 26: Mechanical Installation
Mechanical Installation Respect all local standards and requirements during mechanical installation. Transport All devices are installed inside the MV Station before delivery. The MV Station should be transported as a whole. Transport the MV Station by a crane with sufficient load capacity. The MV Station is delivered to the user by the forwarding company. -
Page 27: Hoisting The Mv Station
System Manual 5 Mechanical Installation • Place the MV Station carefully and gently. Do not pull or push the MV Station on any surface. • The place should be firm and flat with good drainage and no obstacles or outshoots. The MV Station should be supported by the four feet. -
Page 28: Hoisting
5 Mechanical Installation System Manual figure 5-1 Hoisting the MV Station 5.2.2 Hoisting During the whole hoisting process, please observe the following rules: • Hoist the MV Station in a vertical manner. Do not drag or drop the MV Station on any surface. -
Page 29: Fastening Of Connectors
System Manual 5 Mechanical Installation figure 5-2 Hoisting from top fittings table 5-1 The Substation Hoisting Parameters Item Requirement Steel Length(L) ＞6.5 m Steel Rope Qty. 4 pieces, the load of a single steel is not less than 30T. 5.2.3 Fastening of Connectors Use slings with hooks or U-hooks to hoist the MV Station. -
Page 30: Foundation
National and local safety rules should be observed at all times. • Violating relevant safety rules may void pertinent warranty claims from Sungrow. Foundation 5.3.1 Selection of Installation Site When selecting the installation site, consider the following requirements at least: •... -
Page 31: Securing The Mv Station(Optional)
System Manual 5 Mechanical Installation Overall construction effect is shown below. The foundation plan described in this chapter is for reference only. Part source Name Foundation Oil tray Not in the scope of delivery Pea gravel ground Platform 5.3.3 Securing the MV Station(optional) Overview As shown by A in the figure below, the position for installing L-shape angle steel is reserved at the bottom of the container. -
Page 32: Installation Verification
5 Mechanical Installation System Manual Installation Method Other Precautions A drainage system should be designed on the installation site to prevent the MV Station from being immersed in water during heavy rainfalls. Do not plant any trees near the MV Station installation site to prevent the damage of the MV Station caused by tree leaves or stems. -
Page 33: Removing Rain Cover And Sealing Tapes
System Manual 5 Mechanical Installation * The distance illustrated in this figure is the minimum values. Removing Rain cover and Sealing Tapes The sealing tapes ( shown as A in the following figure) and rain cover are attached to the enclosure of the MV Station to prevent moisture penetration during transportation. -
Page 34: Electrical Installation
Electrical Installation Safety Instructions 6.1.1 Generals Rules High voltage! Electrical hazards! • Do not touch the live components of the device. • Make sure the MV Station are voltage-free before installation. • Never put flammable materials in the vicinity of the MV Station. If a ground fault occurs in the PV system, some parts that were voltage-free before may contain lethal voltage. - Page 35 Strictly follow all the instructions when connecting the cables. The installation and design of the MV Station must fulfill national and local standards and regulations. Sungrow should hold no liability for the MV Station or system fault caused by ignorance of the description in this manual.
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Page 36: Five Safety Rules
6 Electrical Installation System Manual Select optical fibers as the external communication cable to lower the signal interference. 6.1.2 Five Safety Rules During electrical connections and other operations on the inside device, observe the following Five Safety Rules: • Disconnect all the external connections and disconnect the MV Station internal power supply •... -
Page 37: Preparation Before Cable Connections
System Manual 6 Electrical Installation Item Name Recommended specifications Communication port Grounding point Preparation before Cable Connections 6.3.1 Installation Tools Installation tools include but are not limited to the following recommended ones, and other auxiliary tools or components can be used on site when necessary. -
Page 38: Opening The Door
6 Electrical Installation System Manual 6.3.2 Opening the Door Opening the Door Lock Opening the Enclosure Insert the key. Turn the handle counterclockwise to unlock the door. 6.3.3 Checking the Cables Check to ensure the intactness and insulation of all cables before electrical connection. -
Page 39: During Connection
System Manual 6 Electrical Installation 6.3.4 During Connection • Do not pull the cables hard during connection. • Make sure there is enough wire bending space for all connection cables. • Take proper methods to reduce the stress of cables. •... -
Page 40: Side Connection
6 Electrical Installation System Manual It is recommended that two points of the MV Station should be connected to the ground system of the PV plant. The MV Station needs to be grounded on site. The following operations should also be conducted on site: Measure the electrical conductivity between the device ground terminals and the total equipotential connection copper bar to ensure the effectiveness of the internal ground connection. - Page 41 System Manual 6 Electrical Installation Tighten the cable lug with relevant tools. Crimp it at least twice. Cable protectors are advisable in the cable crosses if the multi-core cables are used. step 6 Connect the cable. Select bolts matching with the cable lug. Attach the cable lug to the connection copper bar.
- Page 42 6 Electrical Installation System Manual Name Name Copper bus Spring washer Copper-aluminum Flat washer adapter terminal Bolt Fasten the bolts with screwdriver or spanner. For the M12x40 bolts, the fastening torque is 60~70N.m. • Incorrect connection sequence may cause fire. Pay maximum attention to the connection sequence.
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Page 43: Mv Side Connection
System Manual 6 Electrical Installation 2 Using fireproof materials to seal the bottom cable entry hole, remove the debris inside the cabinet, and restore the cabinet cover. 6.4.3 MV Side Connection Terminals connecting the external devices on the MV side of the MV Station are located on the MV switchgear. -
Page 44: Auxiliary Power Supply Cable Connection
6 Electrical Installation System Manual Description Ethernet switch Fiber terminal box Waterproof Terminal Requirements • Reserved waterproof terminal allows the wire diameter to be 6-18mm. • After the wiring is completed， use fireproof material to seal the gap of the waterproof terminal. -
Page 45: Checking After Electrical Connection
System Manual 6 Electrical Installation Description Power distribution area Checking after Electrical Connection Checking Item Requirement The equipment is intact, and free from rust and paint flake-off. Repaint areas with paint flake-off (if any). Equipment appearance The labels on the equipment are legible. The damaged labels must be replaced in time. -
Page 46: Power On The Mv Station
Power On the MV Station The operations described in this chapter must be performed by professional personnel in accordance with local regulations/standards. Checking before Power on 7.1.1 MV Station Container Checking item The installation conforms to the design requirements. The container is level, and each door can be opened properly. There is no crack, dent, or scratch on the container surface. -
Page 47: Mv Transformer
System Manual 7 Power On the MV Station Checking item The door is closed. The auxiliary AC power circuit breaker in the cabinet is switched on. The conversion switch is in the remote position. The local operating switch has been padlocked. The load switch is opening and the grounding switch is closing. - Page 48 7 Power On the MV Station System Manual Remove the Locking Device figure 7-1 Remove the locking device of the pressure relief valve Adjust Voltage Ratio via Tap Changer Tap changer can adjust transformer output voltage. When operating tap changer, ensure that transformer is in the no-excitation state, that is, the high and low voltage sides of transformer are not live.
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Page 49: Cabinet
System Manual 7 Power On the MV Station 7.1.4 LV Cabinet Checking item Disconnector are turned off. The copper bar is not deformed, and no foreign matter is on the copper bar. Measure the ground resistance of Circuit breaker in and out of the copper bar;... -
Page 50: Troubleshooting
2. The pressure relief valve is faulty. is too large, resulting in damage to the film, contact Sungrow Power Co., Ltd. for replacement. 3. Improper oiling operation before servicing or installing the 3. - Page 51 System Manual 8 Troubleshooting Fault Possible Reason Measures 1. Transformer overload operation. 1. Check if the transformer is Overload operation may result in a overloaded. high oil temperature alarm. 2. Check the transformer heat 2. The heat dissipation channel is temperature dissipation channel for foreign blocked.
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Page 52: Routine Maintenance
Routine Maintenance Due to ambient temperature, humidity, dust, and vibration, the MV Station and the inner components will age and wear. To ensure the system safety and maintain the efficiency of the MV Station, it is necessary to carry out routine and periodic maintenance. All measures, which can help the MV Station work in good conditions, are within the maintenance scope. -
Page 53: Maintenance
System Manual 9 Routine Maintenance Respect the following five rules in maintaining or servicing the MV Station to ensure the safety of the maintainer. • Avoid any accidental re-connections. • Verify that no voltage or current is present with appropriate measurement instrument. •... - Page 54 9 Routine Maintenance System Manual Check Item Check Method Check whether the insulation binding tapes on the wiring terminals of power cables are flaked. Clean or replace the dust-proof network. table 9-2 Maintenance (once every half to one year after that.) Check Item Check Method Check the working status of the fan / heat exchanger.
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Page 55: Checking And Cleaning The Filter
Make sure all bolts are securely fixed. Repair immediately any anomalies found during routine maintenance. If there are any doubts, contact Sungrow. Checking and Cleaning the Filter 9.3.1 Checking and Cleaning the Air Inlets The maintenance interval should be shortened if the dust deposition is heavy. -
Page 56: Checking And Cleaning Air Inlets Of The Heat Exchanger
Do not pull hard during cleaning and replacing of the filter cotton and filter screen. The cotton and the screen may be damaged if otherwise. Contact Sungrow to order the filter. You can cut proper filters out of the larger filter. 9.3.2 Checking and Cleaning Air inlets of the Heat Exchanger step 1 Loosen the screws at the four corners of the air inlet of the heat exchanger and remove the air inlet grid cover. -
Page 57: Oil Drain
System Manual 9 Routine Maintenance step 3 Reinstall the filter. step 4 Restore the grid cover of the air inlet. - - End Oil Drain Location The oil drain valve is located at the bottom of transformer. * The figure is for reference only. And the actual product received shall prevail. Tools Prepration Tools may be used: Name... - Page 58 9 Routine Maintenance System Manual step 2 Fix the drain hose connector. Connect one end of the steel hose to the drain valve and the other end to the tank of the transformer. step 3 Open the oil drain valve, and the transformer oil flows slowly into the oil tank. step 4 When no transformer oil flows out, stop discharging oil.
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Page 59: Painting Make-Up Measures
System Manual 9 Routine Maintenance Painting Make-up Measures Check for the damages of the MV Station appearance: Situation 1: smudginess on the surface caused by water and dust that can be cleaned Situation 2: smudginess on the surface & damage to the finishing coat that cannot be cleaned Situation 3: the undercoat is damaged and the primer is revealed Maintenance and Operation Steps for Situation 1:... - Page 60 9 Routine Maintenance System Manual Figure Step 1. Polish the rough paint surface or the scratched parts by abrasive paper until the surface is smooth. 2. Clean the target parts by cleaning cloth with water or use 97% alcohol. 3. When the surface is clean and dry, paint the scratched parts of the paint by banister brush and make sure the painting is as uniform as possible Maintenance and Operation Steps for Situation 3:...
- Page 61 System Manual 9 Routine Maintenance Figure Step 1. Polish the damaged parts of the paint to remove the surface rust or other roughness. 2. Clean the target parts by cleaning cloth with water or use 97% alcohol to clean the surface dust and dirty. 3.
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Page 62: Replace The Fuse Of Lv Cabinet
9 Routine Maintenance System Manual Re-spray the protective paint every 5 years to the MV Station surface. Replace the Fuse of LV Cabinet Overview The fuse position of LV cabinet is shown in the figure below. Tools Name Source Ratchet wrench Scope of supply Torque wrench Load switch operating handle... - Page 63 System Manual 9 Routine Maintenance • Remove the upper and lower protective cover of the faulty branch. • Measure with a multimeter to confirm that there is no power in the branch. • Insert the extension rod into the end of the wrench handle to extend the wrench. Procedure step 1 Remove the front fixing bolts at the upper part of the fuse, and slide the upper protective cover to the left to expose the rear fixing bolts for easy observation and operation.
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Page 64: Appendix
10 Appendix 10.1 Technical Parameters MVS6400–LV Transformer Transformer type Oil immersed Rated power 6400 kVA @ 40℃ Max. power 7040 kVA @ 30℃ Vector group Dy11y11 MV / LV voltage 10 – 35 kV / 0.8 - 0.8 kV Maximum input current at nominal voltage 2540 A ×... - Page 65 System Manual 10 Appendix Dimensions(WxHxD) 6,058x2,896x2,438 mm Approximate weight 22 T Operating ambient temperature range -30 to 60 ℃ Auxiliary power supply 5 kVA / 400 V (optional: max. 40 kVA) Degree of protection IP54 Allowable relative humidity range (non- 0 –...
- Page 66 10 Appendix System Manual Disconnector specification 260 A / 800 Vac / 3P, 30 pcs Fuse specification 400A / 800 Vac / 1P, 90 pcs Protection AC input protection FUSE+Disconnector Transformer protection Oil-temperature, oil-level, oil-pressure Relay protection 50 / 51,50N / 51N LV overvoltage protection AC Type II (optional: AC Type I + II) General Data...
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Page 67: Tightening Torques
System Manual 10 Appendix Insulation type Rate voltage 24 – 36 kV Rate current 630 A Internal arcing fault IAC AFL 20kA/1s Qty.of feeder 3 feeders LV Panel Main switch specification 4000 A / 800 Vac / 3P, 2 pcs Disconnector specification 260 A / 800 Vac / 3P, 28 pcs Fuse specification... -
Page 68: Contact Information
10 Appendix System Manual 10.3 Contact Information In case of questions about this product, please contact us. We need the following information to provide you the best assistance: • Model of the device • Serial number of the device • Fault code/name •... - Page 69 Sungrow Power Supply Co., Ltd. www.sungrowpower.com...