Power Transformer – The Heart of Electrical Transmission
Power Transformer
Power transformers are used to transfer electrical energy between different voltage levels in transmission and distribution systems. They are widely installed in substations, power plants, industrial facilities, renewable energy projects, and utility networks.
Our power transformers are available in oil-immersed and dry-type designs, with ratings ranging from 50kVA to 500MVA+ and voltage classes up to 800kV.
Technical Specifications
| Item | Specification |
|---|---|
| Rated Power | 50kVA – 500MVA+ |
| Voltage Class | 10kV – 800kV |
| Frequency | 50Hz / 60Hz |
| Cooling Method | ONAN, ONAF, OFAF, OFWF |
| Winding Material | Copper or Aluminum |
| Insulation Class | Oil-Immersed or Dry-Type |
| Vector Group | Dyn11, Yyn0, YNd11, Customized |
| Standards | IEC 60076, IEEE C57, ANSI |
Available Transformer Types
Oil-Immersed Power Transformer
Oil-immersed transformers use mineral oil or insulating fluid for cooling and electrical insulation.
Applications:
Utility substations
Power generation plants
Industrial power systems
Renewable energy projects
Features:
High overload capability
Efficient heat dissipation
Suitable for outdoor installation
Available up to extra-high voltage levels
Dry-Type Transformer
Dry-type transformers use air or cast resin insulation and are commonly installed indoors.
Applications:
Commercial buildings
Hospitals
Airports
Data centers
High-rise buildings
Features:
Low maintenance
No oil leakage risk
Suitable for indoor environments
Enhanced fire safety performance
Typical Applications
Utility Power Networks
Power transformers are installed in transmission and distribution substations to convert voltage levels between generation, transmission, and end-user systems.
Renewable Energy Projects
Used for voltage transformation in:
Solar farms
Wind power plants
Battery energy storage systems (BESS)
Industrial Facilities
Suitable for:
Manufacturing plants
Mining operations
Petrochemical facilities
Steel mills
Infrastructure Projects
Widely used in:
Railways
Airports
Data centers
Water treatment plants
Key Components
Magnetic Core
HV and LV Windings
Transformer Tank
Bushings
Conservator
Breather
Radiators
Tap Changer
Testing and Quality Control
Each transformer can be tested according to IEC and IEEE standards, including:
Ratio Test
Insulation Resistance Test
No-Load Loss Test
Load Loss Test
Temperature Rise Test
Partial Discharge Test
Routine and Type Tests
Custom Manufacturing
Available options include:
Copper or aluminum windings
ONAN / ONAF cooling systems
Low-loss core designs
Low-noise configurations
Offshore and desert environments
Custom voltage and MVA ratings
Technical datasheets and project-specific quotations are available upon request.

