Connections
Start with the network voltages and connection arrangement. Review the terminal or cable interfaces against your system and project drawing.
- Primary Voltage
- 15 / 20 / 22 kV
- Secondary Voltage
- 220 / 380 / 400 / 415 / 480 V
Oil Immersed Transformer
20 kV Three Phase Oil-Immersed Distribution Transformer
A three-phase oil-immersed option for 20 kV industrial distribution, rural networks and utility projects.
- Capacity range
- Up to 5,000 kVA
- Voltage class
- 20 kV
Overview
Explore the configuration.
Match the transformer to the local distribution network and the required outgoing supply. The utility specification and expected load help determine the taps, losses and protection interfaces to review.
Insulation & cooling
Review the insulating liquid and cooling arrangement for the duty. Confirm the compatible options, installation clearances and liquid containment in the project design.
- Cooling
- ONAN / ONAF
- Insulation class
- Class A
Installation
Plan the footprint, access and cable routes using the approved outline drawing. Share the installation environment so the mechanical interfaces can be reviewed.
- IP class
- IP54
- Environment
- Outdoor
Specifications
Ratings & configuration
Listed options describe the product range. Final ratings, compatible combinations and performance are confirmed in the approved project datasheet.
| Capacity range | Up to 5,000 kVA |
|---|---|
| Voltage class | 20 kV |
| Frequency | 50 / 60 Hz |
| Tap Range | ±5% |
| Vector Group | Dyn11 |
| Primary Voltage | 15 / 20 / 22 kV |
| Secondary Voltage | 220 / 380 / 400 / 415 / 480 V |
| Cooling | ONAN / ONAF |
|---|---|
| IP class | IP54 |
| Oil type | Mineral oil / FR3 |
| Environment | Outdoor |
| Core material | Cold-rolled grain-oriented silicon steel |
| Insulation class | Class A |
Define the details together.
- Electrical duty
Primary and secondary voltage, capacity, frequency, load profile and tap requirements. - Installation & transport
Outdoor conditions, containment, access, transport dimensions and the equipment interfaces. - Acceptance scope
Required standard, loss and noise limits, inspection points and the reports to be reviewed.
Standards & compliance
GB / IEC / IEEE / UL / CE / ASTA
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
A closer look at our factory.
Explore our manufacturing and test equipment. The production route and acceptance tests are agreed for each configuration.
Horizontal winding machine 1
Vapour-phase drying plant 1
Intelligent insulating-oil treatment system 1
Images from our factory gallery. Equipment shown does not imply every product uses the same manufacturing process.
Explore the FactoryWhat should a utility or rural distribution enquiry include?
Provide the network specification, primary and secondary voltages, frequency and expected load. Add any loss limits, tap requirements, protection details and installation constraints that apply.
What do you need to prepare a quotation?
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.
How are lead time, warranty and delivery agreed?
These are defined in the project quotation after reviewing the technical scope, quantity, destination and document requirements.
Talk to an engineer
Tell us what you need.
A short description is enough. We’ll help clarify the specifications.
PREFER EMAIL?sales@rbtransformer.com