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With two to six inverter windings
- Market leader and first manufacturer in India to develop five winding inverter transformers
- Passed short circuit test
- Low losses
- Suitable for solar load profile
High Ratings for Utility-Scale Solar – Available up to 20 MVA / 33 kV, suitable for large solar parks, hybrid plants, and energy storage systems.
Oil-Cooled or Dry-Type Flexibility – Offered in oil-filled, CRT, or VPI constructions based on fire-safety, environmental, or installation constraints.
Harmonic-Resistant Magnetic Design – Built to handle high-frequency switching harmonics produced by modern inverters, preventing heating and premature ageing.
DC Bias Tolerance – Special core design mitigates residual DC components from inverter output to maintain stable flux levels.
Proven Reliability – Backed by a 16 MVA, 33 kV short-circuit tested transformer, demonstrating strong fault withstand capability for renewable environments.
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Specifications
| Type | Oil Type |
|---|---|
| Rating | Up to 20 MVA |
|
Voltage Class |
Up to 33 kV |
|
No. of Inverters |
Up to 6 inverters |
|
Frequency |
50/60 Hz |
|
Cooling |
ONAN/ONAF |
|
Vector Group |
As required |
| Winding Material | Cu / Al |
| Insulation Class | A |
Technical Information
| Parameter | Value |
|---|---|
| Designed to withstand voltage excursions due to pulsed mode inverter operation | |
|
Inverter Windings are capable to withstand voltage with rate of rise (dV/dt) to ground - As per customer requirement. |
|
|
Electrostatic shield provided for each LV winding |
|
|
Inverter winding could be star/delta. In case of star winding, neutral shall be floating / Provided on top cover for testing purpose. |
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