35kV On-Load Tap-Changing Transformer
Standards
GB / IEC 60076
Testing
Routine report
Origin
China
35kV On-Load Tap-Changing Transformers
5000 kVA 35 kV Oil-Immersed power Transformer
The industry's pain points lie in the insufficient stability, weak shock resistance, and high difficulty in grid connection of large-capacity Power Distribution Equipment . Your problem is that it is difficult to find high-specification power supply equipment that can adapt to super-large loads while ensuring safety, efficiency, and long-term durability. We have specially developed a 5000KVA/ 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 and efficient power distribution. In practical applications, it can stably carry a 4000kW active load, effectively solving problems such as unstable power supply, high overload risk, and poor grid connection in super-large scenarios. This product simplifies the operation process and reduces long-term operating costs. Its core value lies in achieving efficient and stable conversion from 35KV high voltage to 0.4KV low voltage. It is mainly characterized by super-large capacity, high reliability, and strong compatibility. It is widely used in core power distribution of super-large industrial bases, large-scale centralized photovoltaic power station clusters, and urban core hub power distribution, and can operate in coordination with Box Type Substation and Electric Power Converter , seamlessly connecting with Combined Photovoltaic Substations to complete power collection and grid connection, ensuring safe, stable, and energy-efficient power transmission on a super-large scale.
- Product type
- 35kV On-Load Tap-Changing Transformer
- Rated capacity
- 5,000 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 insufficient stability, weak shock resistance, and high difficulty in grid connection of large-capacity Power Distribution Equipment . Your problem is that it is difficult to find high-specification power supply equipment that can adapt to super-large loads while ensuring safety, efficiency, and long-term durability. We have specially developed a 5000KVA/ 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 and efficient power distribution. In practical applications, it can stably carry a 4000kW active load, effectively solving problems such as unstable power supply, high overload risk, and poor grid connection in super-large scenarios. This product simplifies the operation process and reduces long-term operating costs. Its core value lies in achieving efficient and stable conversion from 35KV high voltage to 0.4KV low voltage. It is mainly characterized by super-large capacity, high reliability, and strong compatibility. It is widely used in core power distribution of super-large industrial bases, large-scale centralized photovoltaic power station clusters, and urban core hub power distribution, and can operate in coordination with Box Type Substation and Electric Power Converter , seamlessly connecting with Combined Photovoltaic Substations to complete power collection and grid connection, ensuring safe, stable, and energy-efficient power transmission on a super-large scale.
Product Features (Key Extracts)
Large capacity and strong shock resistance: Specifically designed for ultra-large load scenarios, it has ample capacity redundancy. It uses high-strength alloy cores and high-temperature-resistant coil technology, which has a much higher ability to withstand overloading and instantaneous load shocks compared to conventional equipment. It can stably carry the large power demand of ultra-large production lines and photovoltaic power station clusters for a long time. It can smoothly interact with Combined Photovoltaic Substations and Electric Power Converters, has strong grid connection adaptability, and can be combined with Box Type Substation to achieve integrated intelligent power distribution control.
2. Wide adaptability and hassle-free operation and maintenance: The Oil Immersed Transformer adopts advanced anti-corrosion sealing and efficient heat dissipation structures, which are suitable for outdoor extreme harsh environments and can withstand strong temperature differences, high dust, and high humidity interference. The Dry Type Transformer has first-class fireproof, moisture-proof, and pollution-proof performance, suitable for core power distribution scenarios with high fire prevention and high cleanliness requirements indoors. Both can be seamlessly connected with High And Low Voltage Switchgear, without the need for additional customization or renovation. The operation and maintenance process is simplified, significantly reducing the manpower investment.
1. When selecting the type, it is necessary to calculate the maximum load of the scenario and the long-term expansion requirements in advance. For extremely large outdoor industrial and photovoltaic cluster scenarios, Oil Immersed Transformers should be preferred; for urban core hubs and precision power distribution scenarios, Dry Type Transformers should be chosen. By combining with Combined Photovoltaic Substations and Electric Power Converters, the grid connection efficiency and power distribution stability can be further enhanced.
2. In daily operation and maintenance, it is necessary to closely monitor the operating parameters of the equipment. For oil-immersed transformers, regular inspections of the oil quality, cooling system, and sealing performance are required. For dry-type transformers, regular cleaning of the cooling components and testing of insulation performance are necessary. Overloading must be strictly avoided to prevent equipment damage.
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 | 5,000 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 5000 kVA 35 kV Oil-Immersed power Transformer
What is 5000 kVA 35 kV Oil-Immersed power Transformer best used for?
What is the typical lead time for 5000 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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