Related Manuals for Sungrow MVS4480-US
Summary of Contents for Sungrow MVS4480-US
- Page 1 User Manual The Pad-mounted Transformer The Pad- mounted TransformerUser ManualPMT-UEN-Ver12-202401 PMT-UEN-Ver12-202401...
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Page 3: All Rights Reserved
Software Licenses • It is prohibited to use data contained in firmware or software developed by SUNGROW, in part or in full, for commercial purposes by any means. • It is prohibited to perform reverse engineering, cracking, or any other operations that compromise the original program design of the software developed by SUNGROW. - Page 4 Version Date Content add requirement to cable fixture Ver11 20220802 add operation in internal devices reorganize chapters structures from flat to pyramid. Updated transformer-related drawings Added information related to cold start Added the below notices: • It is recommended to use tin plated aluminum terminals or tin plated copper terminals.
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Page 5: Table Of Contents
Contents All Rights Reserved .....................I 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 ..................1 2 Product Description ..................3 2.1 Four Views.....................3 2.2 Exterior Dimensions..................3 3 Electrical Connection ..................5 3.1 Connection Area.....................5 3.2 Connection Procedure ..................6... - Page 6 7.1 Low Voltage and High Voltage Electrical Connections ........16 7.2 Connections....................16 7.3 Ground Connections..................16 7.4 Pre-Commissioning Check ................16 7.5 Recommended Torque..................17 8 Components and Accessories ..............20 8.1 General .......................20 8.2 Cover Mounted Pressure Relief ..............21 8.3 Expulsion fuse....................21 8.3.1 Bay-O-Net type ...................21 8.3.2 Remove Fuse Holder................22 8.3.3 Replace Fuse Link ................24 8.3.4 Terminal board type................30...
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Page 7: About This Manual
If the manual received is slightly inconsistent with the product, it may be a result of a product version upgrade, and the actual product shall prevail. For any questions, please contact Sungrow Customer Service. Symbol Explanations To ensure the safety of the users and their properties when they use the product and to... - Page 8 1 About This Manual User Manual the relevant safety information which is marked by the following symbols. The symbols that may be used in this manual are listed below. Please read carefully to make better use of this manual. DANGER indicates high-risk potential hazards that, if not avoided, may lead to death or serious injury.
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Page 9: Product Description
Product Description This chapter describes the exterior appearance and main components of the transformer. Four Views MVT of SG4400UD-MV-US as reference, The four views of the transformer are shown in the figure below. figure 2-1 Four Views of SG4400UD-MV-US Exterior Dimensions The dimensions of the transformer are shown in the figure below. - Page 10 2 Product Description User Manual figure 2-2 Exterior Dimensions of SG4400UD-MV-US MVT of SG4400UD-MV-US as reference, differ for other MVT size.
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Page 11: Electrical Connection
Electrical Connection Medium-voltage connections should only be made by a qualified person who is authorized to make medium voltage connections. Perform cable connections in strict accordance with the terminal phase sequence. This chapter mainly describes the locations of cable connection terminals and recommended cable specifications. -
Page 12: Connection Procedure
The medium-voltage cables must be fitted with type C connection plugs. Use only tined-copper threaded stud provided by Sungrow. Substitution of the threaded stud is not allowed or shall be reviewed by SUNGROW technicians otherwise it shall void manufacturer warranty. - Page 13 User Manual 3 Electrical Connection It is recommended to use tin plated aluminum terminals or tin plated copper terminals. Step 1 Clean cable adapter and dead break connector. Lubricate cable adapter outer surface, dead break connector inner surface. Insert compression connector into dead break connector. Until compression connector eye is in the center of dead break connector.
- Page 14 3 Electrical Connection User Manual Step 4 Connect the coupling adapter casing to cable adapter. Step 5 Install the connecting bolt.
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Page 15: Cable Fixture
User Manual 3 Electrical Connection Step 6 Clean and lubricate dead break connector, coupling adapter and insulating plug, then connect them. When wiring, reserve sufficient length in HV cables to avoid the impact of stress. Meanwhile, make sure the cable labels are correct. - - End Cable Fixture After completing wiring, fix the cable on the beam to avoid excessive stress on the cable. - Page 16 Additional sets of cable clips and beams will be provided based on the actual size of the project. Sungrow has supplied channel steel on both left and right side, to allow customer attach its own beam(s), cable clips. It must be assured that the weight and alignment of the cables connected to the bushing will not bring about mechanical stress that can cause crack, failures or to provoke the presence of leakages through the gaskets.
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Page 17: Logistic & Handling
Hoisting The transformer is used inside the SUNGROW containerized solution, and it can only be moved with a crane from the top. The transformer always must be lifted or held from the four lifting lugs in vertical position unless it is indicated in any other way. -
Page 18: Cold Start
4 Logistic & Handling User Manual • Look for chips or flaws in the surface and apply painting in damaged surfaces, preparing the surface with sandpaper. • Avoid contact with vapors or corrosive gases as the chlorine and sulfur ones. •... -
Page 19: Inspection
HV voltage side and the accessory cabinet. A report of the conditions in which the equipment and its accessories were received must be done for any claim. Internal Transformer Inspection It will only be carried out in the presence of SUNGROW or with authorization written. -
Page 20: Design Consdieration
At high altitudes the air density decreases, reducing the cooling system efficiency as well as the air dielectric strength. The standard offer transformer Sungrow provide is of 1000m/3300ft, the transformer which is used above this altitude need to specify the altitude and the ambient temperature when place an order. - Page 21 User Manual 6 Design Consdieration However, the noise level should not reach levels which is specified in the inverter / PCS specs.
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Page 22: Service Preparation
The connection has to be made through the tank ground pad. For the containerized solution Sungrow supply, the transformer has been grounded via the container grounding cables. Please make sure the container grounding pad are well connected to the grounding network onsite. -
Page 23: Recommended Torque
User Manual 7 Service Preparation • All the tools or strange objects have been removed from the transformer. • Any bolted connection i.e., H.V. bushings flange, etc are properly tightened. • No oil leakages or stains are present • The oil level is the correct one. •... - Page 24 7 Service Preparation User Manual Torque guidelines for external cabinet fasteners Fasten torque Nominal Torque(In-Ibs) Torque Range(In-Ibs) Penta-head security bolt 100 80-120 3/8’’ bolt 500-600 Hand-hole cover bolt 170-210 Torque guidelines for external bushings mounting hardware Fasten torque Nominal Torque Torque Range (In-Ibs) (In-Ibs)
- Page 25 User Manual 7 Service Preparation Torque guidelines for accessories Component Nominal Torque(In- Torque Range(In- Ibs)* Ibs) Bay-O-Net fuse cartridge end plug 60-80 Bay-O-Net fuse holder-to-cartridge 60-80 connection Dry-well fuse canister clamp 40-80 Fluid-level sight plug 480-720 Fill plug 900-1020 Drain plug 900-1020 Drain valve 480-720...
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Page 26: Components And Accessories
The knowledge of the accessories and the way in which they protect to the three phase pad- mounted transformer, will give a bigger security to operatives and a long field life. figure 8-1 Pad-Mounted Transformer Sungrow supply table 8-1 Accessories... -
Page 27: Cover Mounted Pressure Relief
User Manual 8 Components and Accessories Description Load break switch Oil drain valve Cover Mounted Pressure Relief This pressure relief is used to protect the transformer when there is a severe fault for the transformer such as internal short circuit, the cover mounted pressure relief is to release the pressure immediately under those fault conditions. -
Page 28: Remove Fuse Holder
8 Components and Accessories User Manual figure 8-3 Bay o net fuse 8.3.2 Remove Fuse Holder If transformer tank has a pressure relief valve, use hot stick and complete the following steps to relieve tank pressure. Pull pressure relief valve open, keeping it held open for 30 seconds after pressurized air can no longer be heard evacuating audibly through the valve. - Page 29 User Manual 8 Components and Accessories Step 2 Break seal. Turn fuse holder 90° in the Bay-O-Net housing to break the seal between the seal gasket and the Bay-O-Net housing. figure 8-4 Unlock and turn fuse holder 90° in the Bay-O-Net housing. Step 3 Draw fuse holder out.
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Page 30: Replace Fuse Link
8 Components and Accessories User Manual figure 8-5 Draw fuse holder out 6 to 8 inches (152 to 203 mm) Step 4 Remove fuse holder from Bay-O-Net housing. If a drip guard (metal or plastic) is present, it is recommended to rest the Bay- O- Net holder on the drip guard for 30 seconds to 1 minute to minimize the potential of oil spillage onto rubber terminators. - Page 31 8-2 Correspondence between Transformer Capacity and Loss No-load losses@20C Capacity (KVA) (KW) Load losses@85C (KW) 4480 (MVS4480-US） 39.8 4400 (SG4400UD-MV-US) 33.44 3600 (SG3600UD-MV) 31.2 3425 (SG3425UD-MV) 29.9...
- Page 32 8 Components and Accessories User Manual Step 1 Remove fuse cartridge Use a 3/4 inch (19 mm) wrench to remove fuse cartridge from fuse cartridge holder. Carefully inspect the fuse cartridge. figure 8-7 Remove fuse cartridge from fuse cartridge holder Damage to the cartridge (such as severe erosion of the brass end piece, or burning on the interior or exterior surface of the insulation) may prevent the fuse from proper operation.
- Page 33 User Manual 8 Components and Accessories Step 2 Remove end plug and fuse link from fuse cartridge Use 3/4 inch (19 mm) and 1/2 inch (13 mm) wrenches to remove end plug. Use screwdriver or other tool to straighten the tulip tip end of fuse link and push fuse link out of fuse cartridge.
- Page 34 8 Components and Accessories User Manual Step 4 Tighten cartridge to fuse cartridge holder. • Tighten fuse contact flare end against fuse cartridge holder using 50-70 in-lbs (5.65-7.9 Nm) of torque.(Refer to C in "figure 8-8 Remove end plug from fuse cartridge").
- Page 35 User Manual 8 Components and Accessories Step 5 Check fluid level. • Refer to the equipment manufacturer’s instruction book for correct oil level. • The fluid level in the transformer should be approximately at the base of the protruding plastic threads of the Bay-O-Net housing at 25° C (77° F) with the transformer on a level surface.
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Page 36: Terminal Board Type
The expulsion fuse acts in fault cases in the secondary side of pad- mounted transformer or for overloads higher to the acceptable for the Norm NOM-J-409 and ANSI C-57.91. To replace the fuse from the inside, please reach out to SUNGROW technicians for the fuse replacement. -
Page 37: Earthing Plate
User Manual 8 Components and Accessories figure 8-12 HV Bushing Earthing Plate The earthing plate is used for grounding AC shielded cables, as shown in the following figure. figure 8-13 Earthing Plate LV Bushing The LV bushing is tined copper and used for connecting the Inverter or PCS output busbar as below figure shows. -
Page 38: Off-Load Tap Changer
8 Components and Accessories User Manual figure 8-14 LV Bushing Off-Load Tap Changer The tap changer is a device that allows making windings adjustments to compensate deviations in nominal voltage. The tap changer operation could be made with hot-line tool or using the operation handle. To operate the tap changer, you must follow the next instructions: 1. -
Page 39: Oil Level Indicator
User Manual 8 Components and Accessories De-energize the transformer before operating the Tap Changer. Verify that the tap changer is in a correct and firmly position preventing any unwanted displacement. figure 8-15 Tap changer Oil Level Indicator Oil level gauge is a device that has a float that is in direct contact with the insulating liquid, and it allows to know which is the nominal level, minimum level and maximum level allowed in the transformer operation. -
Page 40: Schrader Valve
8 Components and Accessories User Manual figure 8-16 Oil Level Indicator The dial is divided in levels: Under - (MIN) Nominal - (25°C) High - (MAX) The transformer is equipped with an oil level indicator. The transformer will stop operating if the oil level falls below the lowest scale on the oil level indicator or below the oil level scale required for safe operation of the transformer. -
Page 41: Transformer Pressure Gauge
User Manual 8 Components and Accessories figure 8-17 schrader valve 8.10 Transformer Pressure Gauge The transformer pressure gauge is designed according to ANSI C57.12.34. It indicates the real pressure condition inside the transformer oil tank. figure 8-18 Pressure Gauge Pressure Gauge In order to ensure the quality, the product shall be filled with N2 in the oil tank and positive pressure before delivery. -
Page 42: Overpressure Relief Valve
8 Components and Accessories User Manual When the oil temperature is the pressure shall be adjusted to 40 ℃ 1.5 ~ 2. 0 psig (PRESS) 45 ℃ 2.0 ~ 2. 5 psig (PRESS) 50 ℃ 2.5 ~ 3.0 psig (PRESS) During operation, if it is found that the pressure gauge always shows "0", it must check whether there is air leakage in the tank or the pressure gauge damaged. -
Page 43: Oil Temperature Gauge
Before delivery, the alarm temperature and tripping temperature have been set on the oil temperature indicator. The alarm temperature is set to 100℃. 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 Sungrow. -
Page 44: Load Switch
The tripping temperature is set to 105℃. When the oil temperature reaches the value, tripping signals will be sent to the intelligent power distribution cabinet or a communication unit provided by the Sungrow. At the same time, the transformer will be disconnected from the upstream and downstream devices. -
Page 45: Four Position Load Switch
User Manual 8 Components and Accessories figure 8-22 Schematic of the two position load switch transformer 8.14.2 Four Position Load Switch The four position load switch arrangement shown in below. Consist of 4 positions, gang operated, internal oil switches. It may be used for sectionalize and loop connections, such as selection of power sources in a loop feed primary distribution system, isolating faulted cables or transformers, or isolating transformer when changing it out or during maintenance. -
Page 46: Oil Draining Valve
8 Components and Accessories User Manual When the switch is turned to A-T-B position, the loop feeders are connected with the transformer be energized. When the switch is turned to A-T position, only one side of the transformer loop (A bushing) is connected with the transformer be energized. - Page 47 User Manual 8 Components and Accessories Open the drain valve and the oil in the transformer slowly flows from the transformer into the tank. Check the position of the oil level gauge according to the temperature-level curve according to the local ambient temperature. Stop draining when the oil in the transformer is reduced to the required level.
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Page 48: Transformer Maintenance Guide
Transformer Maintenance Guide The transformer disconnection from an electric system causes considerable production losses, as well as other inconveniences. For this reason, it is important to assure a transformer operation free of faults, through a maintenance program that is well structured and that it is faithfully carried out. -
Page 49: Maintenance Procedures
User Manual 9 Transformer Maintenance Guide b) A repair log. It is an essential diagnosis register to eliminate future difficulties. c) An inspection revision list. It is simply a listing of points that have to be revised, dates and/ or frequencies in that will be taken to effect. Without these logs it will be very difficult that a program of preventive maintenance works, so the inspection knowledge got will get lost quickly. - Page 50 9 Transformer Maintenance Guide User Manual Procedure Time Check Method • The oil leaked out within 2 hours can be re-used directly. • For the oil that has leaked out for over 2 hours, you may test it for voltage withstand, water content, and dielectric loss based on the actual situation.
- Page 51 User Manual 9 Transformer Maintenance Guide Procedure Time Check Method Check the oil level. Register variations in the oil level, Every three taking into account the level change due to changes in weeks: the oil temperature. Oil level gauge • Clean the mask.
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Page 52: Fast Reference For Troubleshooting
10 Fast Reference for Troubleshooting Different Transformer Oil stains in Fuse and Fuse voltage test ratio no cover tank Suggested action switches operation between match with operation phases nameplate accessories Verify that the surge arrester is × not faulty. Verify that the ×... - Page 53 User Manual 10 Fast Reference for Troubleshooting Different Transformer Oil stains in Fuse and Fuse voltage test ratio no cover tank Suggested action switches operation between match with operation phases nameplate accessories Verify that the bushing blade are × appropriately connected.
- Page 54 10 Fast Reference for Troubleshooting User Manual Different Transformer Oil stains in Fuse and Fuse voltage test ratio no cover tank Suggested action switches operation between match with operation phases nameplate accessories Revise the primary × voltage. Clean and adjust all the screws according "7.5...
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Page 55: Contact Information
11 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 • Brief description of the problem North American Regional Telephone: +1 833 747 6937 For detailed contact information, please visit: https://en.sungrowpower.com/contactUS... - Page 56 Sungrow Power Supply Co., Ltd. www.sungrowpower.com...
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