Zhejiang Jiangshan Hengli Electrical Co., Ltd. is one of the leading manufacturers and suppliers of large power transformer in China. If you're going to wholesale durable large power transformer made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.
A large power transformer is a core piece of equipment in a power system, it is heavy-duty oil-immersed power equipment designed for high-voltage power transmission and distribution. It is typically installed in power plant step-up substations, hub substations, and large user base main step-down substations, transforming the generator output voltage or the voltage of the upstream power grid to a voltage level suitable for downstream transmission or distribution.
Hengli is a national high-tech enterprise with a history of more than 20 years,we provide large power transformer range from 2000kVA up to 100000kVA, supporting various high voltage such as 66kV, 100kV, 110kV,132kV, 138kV,150kV with multiple secondary voltage options to meet diverse project demands.Transformers can be customized according to the needs of customers with different voltage and capacity.
Key Components
Core
Constructed from laminated steel sheets, the core forms a low-reluctance magnetic path. It reduces magnetic flux leakage and boosts the energy transfer efficiency of the transformer.
Windings
Primary and secondary insulated coils are wound around the core. The turn count of each winding sets the voltage ratio between input and output sides.
Insulation
Insulating materials like oil-impregnated paper, press board and synthetic materials avoid electrical breakdown, securing safe and reliable transformer operation.
Tank
The transformer is installed inside an oil-filled tank. Insulating oil dissipates operating heat and offers extra insulation protection internally.
Technical Specifications
Why Large Power Transformers Rarely Use Dry Type Designs
Most high-voltage large power transformers adopt oil immersed solutions rather than dry cast resin transformers. Three key factors account for this difference. Dry type transformers suffer insufficient insulation stability above 110kV and limited air cooling capacity under heavy loads. Besides, dry-type equipment brings much higher manufacturing costs for large-capacity projects. Dry transformers fit indoor low-to-medium voltage scenarios below 35kV, while oil immersed transformers remain the reliable, cost-effective choice for high-voltage, heavy-load large power transformation.
Factory Capability
We provide:
- Direct manufacturer pricing: Factory-direct (Best price for 100% upfront).Skip the middleman and the long wait.
- MOQ: 1 unit – flexible cooperation
- Large stock available, fast delivery
- Service: No bidding, no delays, direct deal for private projects.
- Quality tested. Ready for your mines & factories in your country.
- Focused on Chinese power transformer supply with stable quality and compliance with multiple international standards.
- Power utilities, installers, and EPC contractors are welcome for long-term cooperation.
Hot Tags: large power transformer, China large power transformer manufacturers, suppliers, factory
