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

ItemSpecification
Rated Power50kVA – 500MVA+
Voltage Class10kV – 800kV
Frequency50Hz / 60Hz
Cooling MethodONAN, ONAF, OFAF, OFWF
Winding MaterialCopper or Aluminum
Insulation ClassOil-Immersed or Dry-Type
Vector GroupDyn11, Yyn0, YNd11, Customized
StandardsIEC 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.