Connections
Start with the network voltages and connection arrangement. Review the terminal or cable interfaces against your system and project drawing.
- Primary Voltage
- 500 kV
- Secondary Voltage
- Specified per project
Oil Immersed Transformer
A 500 kV oil-immersed power transformer enquiry platform for EHV substations, utility grids and major interconnection projects. Ratings are defined for the project.

Overview
Begin with the utility specification and single-line diagram. Capacity, voltage ratio, insulation coordination, regulation, cooling and transport arrangements need a coordinated technical proposal rather than a catalogue-only selection.

Start with the network voltages and connection arrangement. Review the terminal or cable interfaces against your system and project drawing.
Review the insulating liquid and cooling arrangement for the duty. Confirm the compatible options, installation clearances and liquid containment in the project design.
Plan the footprint, access and cable routes using the approved outline drawing. Share the installation environment so the mechanical interfaces can be reviewed.
Specifications
Listed options describe the product range. Final ratings, compatible combinations and performance are confirmed in the approved project datasheet.
| Capacity range | Specified per project |
|---|---|
| Voltage class | 500 kV |
| Standard | IEC 60076 / IEEE-ANSI C57 |
| Frequency | 50 / 60 Hz |
| Tap Range | OLTC, range specified per project |
| Vector Group | Specified per project |
| Primary Voltage | 500 kV |
| Secondary Voltage | Specified per project |
| Cooling | ONAN / ONAF / OFAF / ODAF |
|---|---|
| Oil type | Mineral oil / FR3 |
| Environment | Outdoor |
| Core material | Cold-rolled grain-oriented silicon steel |
| Insulation class | Class A |
Standards & compliance
IEC / IEEE/ANSI
Applicable standards and required certificates or test reports must be agreed for the specific project. A standard listed here is not a certification claim.
Listed options describe the product range. Final ratings, compatible combinations and performance are confirmed in the approved project datasheet.
Manufacturing
Explore our manufacturing and test equipment. The production route and acceptance tests are agreed for each configuration.



Images from our factory gallery. Equipment shown does not imply every product uses the same manufacturing process.
Explore the FactoryThe current catalogue treats capacity as project-defined. Submit the required rating and operating duty. Availability, dimensions, transport arrangement and test scope must be confirmed for the proposed design.
Start with your email and a short description. Tell us what you want to power, replace or purchase. You can send known ratings or a drawing, but you do not need to know every specification.
These are defined in the project quotation after reviewing the technical scope, quantity, destination and document requirements.
Talk to an engineer
A short description is enough. We’ll help clarify the specifications.