35kV On-Load Tap-Changing Transformer
Standards
GB / IEC 60076
Testing
Routine report
Origin
China
35kV On-Load Tap-Changing Transformers
8000 kVA 35 kV Oil-Immersed power Transformer
The industry's pain points lie in the fact that large-capacity Power Distribution Equipment is prone to overload, poor heat dissipation, and poor grid integration coordination. Your problem is that it is difficult to find high-end power supply equipment that is suitable for extremely large loads, takes into account safety, durability, and efficient coordination. We have specially developed the 8000KVA/ 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 intelligent coordinated power distribution. In practical applications, it can stably carry a 6400kW active load, effectively solving problems such as unstable power supply, insufficient heat dissipation, and poor grid integration coordination in extremely large scenarios. This product simplifies the operation and maintenance process and reduces long-term operating costs. The core value of this product lies in achieving efficient and stable conversion from 35KV high voltage to 0.4KV low voltage. It focuses on extremely large capacity, high immunity, and strong coordination, and is widely used in core power distribution in extremely large industrial bases, hubs of large-scale centralized photovoltaic power stations, and urban main power distribution scenarios. It can operate in conjunction with Box Type Substation and Electric Power Converter , seamlessly connecting with Combined Photovoltaic Substations to complete large-scale power collection and grid connection, ensuring safe, stable, and efficient power transmission for extremely large-scale power transmission.
- Product type
- 35kV On-Load Tap-Changing Transformer
- Rated capacity
- 8,000 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 fact that large-capacity Power Distribution Equipment is prone to overload, poor heat dissipation, and poor grid integration coordination. Your problem is that it is difficult to find high-end power supply equipment that is suitable for extremely large loads, takes into account safety, durability, and efficient coordination. We have specially developed the 8000KVA/ 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 intelligent coordinated power distribution. In practical applications, it can stably carry a 6400kW active load, effectively solving problems such as unstable power supply, insufficient heat dissipation, and poor grid integration coordination in extremely large scenarios. This product simplifies the operation and maintenance process and reduces long-term operating costs. The core value of this product lies in achieving efficient and stable conversion from 35KV high voltage to 0.4KV low voltage. It focuses on extremely large capacity, high immunity, and strong coordination, and is widely used in core power distribution in extremely large industrial bases, hubs of large-scale centralized photovoltaic power stations, and urban main power distribution scenarios. It can operate in conjunction with Box Type Substation and Electric Power Converter , seamlessly connecting with Combined Photovoltaic Substations to complete large-scale power collection and grid connection, ensuring safe, stable, and efficient power transmission for extremely large-scale power transmission.
Product Features (Key Extracts)
1. Extra-large capacity with outstanding anti-interference performance: Specifically designed for extremely large load scenarios, it has ample capacity redundancy. It uses high-strength alloy iron cores and high-voltage, high-temperature resistant coil technology, providing extremely strong resistance to overloading, instantaneous load shock, and grid interference. It can stably carry the high-power electricity demands of extremely large production lines and photovoltaic power station hubs for a long time. It can efficiently interact with Combined Photovoltaic Substations and Electric Power Converters, has excellent grid connection synergy, and can be combined with Box Type Substation to achieve intelligent distribution control throughout the process.
2. Strong adaptability and efficient heat dissipation: The Oil Immersed Transformer adopts high-end anti-corrosion sealing and upgraded forced cooling structure, suitable for outdoor extreme harsh environments, capable of withstanding strong temperature differences, high dust, high humidity, and complex grid interference. The Dry Type Transformer has first-class fireproof, moisture-proof, and pollution-proof performance, equipped with an efficient heat dissipation module, suitable for core distribution scenarios with high fire resistance and high cleanliness requirements indoors. Both can be seamlessly connected with High And Low Voltage Switchgear without additional customization or modification, providing convenient operation and stable heat dissipation.
1. When selecting the type, it is necessary to calculate the maximum load of the scene, expansion requirements, and the power grid environment in advance. For extremely large outdoor industrial and photovoltaic hub scenarios, Oil Immersed Transformers should be given priority. For urban main network core power distribution and precision computer room scenarios, Dry Type Transformers should be preferred. By combining with Combined Photovoltaic Substations and Electric Power Converters, the coordination of grid connection and the stability of power distribution can be further enhanced.
2. In daily operation and maintenance, it is crucial to closely monitor the operating parameters and cooling conditions of the equipment. For oil-immersed transformers, regular inspections of the oil quality, cooling system, and sealing performance are necessary. For dry-type transformers, regular cleaning of the cooling modules and testing of insulation performance are required. Overloading must be strictly avoided to prevent damage to the equipment due to poor cooling or excessive load.
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 | 8,000 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 8000 kVA 35 kV Oil-Immersed power Transformer
What is 8000 kVA 35 kV Oil-Immersed power Transformer best used for?
What is the typical lead time for 8000 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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