35kV On-Load Tap-Changing Transformer
Standards
GB / IEC 60076
Testing
Routine report
Origin
China
35kV On-Load Tap-Changing Transformers
3150 kVA 35 kV Oil-Immersed power Transformer
The industry's pain points lie in the insufficient stability of ultra-high- Power Distribution Equipment , the high difficulty of grid connection, and the relatively high operation and maintenance costs. Your concern is the inability to find high-specification power supply equipment that can adapt to extremely large loads while ensuring both safety and efficiency. We have specially developed the 3150KVA/ 35kv Transformer , which can be flexibly selected as Oil Immersed Transformer or Dry Type Transformer . It is combined with High And Low Voltage Switchgear to achieve precise power distribution. In practical applications, it can stably carry a 2520kW active load, effectively solving the problems of unstable power supply and poor grid connection in extremely large scenarios, and significantly reducing operation and maintenance costs. The core value of this product lies in achieving efficient and stable conversion from 35KV high voltage to 0.4KV low voltage. It is mainly characterized by high capacity, high reliability, and easy grid connection. It is widely used in large industrial bases, centralized photovoltaic power stations, large hubs and other extremely large load scenarios. It can operate in coordination with Box Type Substation and Electric Power Converter , seamlessly connect with Combined Photovoltaic Substations to complete power collection and grid connection, ensuring the safety, efficiency and stability of large-scale power transmission.
- Product type
- 35kV On-Load Tap-Changing Transformer
- Rated capacity
- 3,150 kVA
- Voltage class
- 35 kV
- Cooling
- ONAN / ONAF
- Tap range
- Off-circuit or on-load, project-specific
- Winding
- Copper or aluminium (project-specific)
Final ratings, losses, impedance and dimensions are confirmed on the approved datasheet. Website values are for family selection.
- Routine test report with the unit
- English GA drawing and O&M manual
- Copper or aluminium winding options
- 50 Hz / 60 Hz and harsh-site options
Product overview
The industry's pain points lie in the insufficient stability of ultra-high- Power Distribution Equipment , the high difficulty of grid connection, and the relatively high operation and maintenance costs. Your concern is the inability to find high-specification power supply equipment that can adapt to extremely large loads while ensuring both safety and efficiency. We have specially developed the 3150KVA/ 35kv Transformer , which can be flexibly selected as Oil Immersed Transformer or Dry Type Transformer . It is combined with High And Low Voltage Switchgear to achieve precise power distribution. In practical applications, it can stably carry a 2520kW active load, effectively solving the problems of unstable power supply and poor grid connection in extremely large scenarios, and significantly reducing operation and maintenance costs. The core value of this product lies in achieving efficient and stable conversion from 35KV high voltage to 0.4KV low voltage. It is mainly characterized by high capacity, high reliability, and easy grid connection. It is widely used in large industrial bases, centralized photovoltaic power stations, large hubs and other extremely large load scenarios. It can operate in coordination with Box Type Substation and Electric Power Converter , seamlessly connect with Combined Photovoltaic Substations to complete power collection and grid connection, ensuring the safety, efficiency and stability of large-scale power transmission.
Product Features (Key Extracts)
High capacity and high reliability: Specifically designed for extremely large load scenarios, it has ample capacity and strong operational stability. It adopts high-quality iron cores and coil designs, featuring outstanding resistance to overloading and shock. It can continuously meet the high-power electricity demands of extremely large production lines and centralized photovoltaic power stations. It works smoothly in conjunction with Combined Photovoltaic Substations and Electric Power Converters, has high grid connection efficiency, and can be combined with Box Type Substation to achieve integrated power distribution and control.
2. Strong adaptability and energy-saving: The Oil Immersed Transformer adopts efficient heat dissipation and anti-corrosion sealing technology, which is suitable for outdoor complex and harsh environments, and can withstand temperature differences and dust interference. The Dry Type Transformer has excellent fireproof and moisture-proof properties, suitable for indoor scenarios with high fire prevention and high cleanliness requirements. Both can be seamlessly connected with High And Low Voltage Switchgear without additional modifications, and have low no-load loss, resulting in significant energy-saving effects over the long term.
The selection should take into account the peak load of the site and the installation environment. For extremely large outdoor industrial scenarios, Oil Immersed Transformers should be preferred; for indoor hubs and precision workshops, Dry Type Transformers should be chosen. For new energy projects, Combined Photovoltaic Substations and Electric Power Converters should be used simultaneously to ensure grid connection stability.
2. In daily operation and maintenance, special attention should be paid to the operating status of the equipment. For oil-immersed transformers, regular inspections of the oil quality and cooling system are necessary. For dry-type transformers, regular cleaning of the cooling components and inspection of insulation performance are required to prevent the equipment from being affected in its service life due to load fluctuations or improper maintenance.
Design features
What the design is built around
Low-loss magnetic core
Cold-rolled grain-oriented silicon steel and a stepped core reduce no-load loss and audible noise.
Sealed tank construction
Welded tank, quality-gasketed cover and pressure-tested seals reduce oil leakage risk in outdoor duty.
Thermal margin for hot climates
Cooling surfaces and oil volume are selected for high ambient temperature and cyclic loading.
System compatibility
MV terminals, cable boxes and LV bushings are matched to the switchgear and protection scheme.
Typical specification
Specifications to confirm on the datasheet
| Product type | 35kV On-Load Tap-Changing Transformer |
|---|---|
| Rated capacity | 3,150 kVA |
| Voltage class | 35 kV |
| Cooling | ONAN / ONAF |
| Tap range | Off-circuit or on-load, project-specific |
| Winding | Copper or aluminium (project-specific) |
| Standards | GB 1094.1, GB/T 6451, IEC 60076 |
| Testing | Routine tests plus type and special tests on request |
The table is a family-level starting point. The approved datasheet fixes the guaranteed values, drawing dimensions and test plan for the specific order.
Typical applications
- 35 kV industrial main substations
- Utility distribution with voltage regulation
- Steel, cement and chemical plants
- Renewable-energy step-up
- Mining and oil-gas facilities
Confirm before ordering
- Rated capacity, voltage ratio and tap range
- Impedance, fault level and parallel operation
- Ambient temperature, altitude and enclosure
- Winding material, losses and efficiency class
- Terminations, protection and monitoring
- Tests, inspection, packing and shipping limits
Buyer questions
FAQ for 3150 kVA 35 kV Oil-Immersed power Transformer
What is 3150 kVA 35 kV Oil-Immersed power Transformer best used for?
What is the typical lead time for 3150 kVA 35 kV Oil-Immersed power Transformer?
Which standards and tests are supplied?
Can the transformer be customised for 60 Hz or a hot climate?
How do I choose between copper and aluminium windings?
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