Power Transformer
All the transformers of rating above 5MVA and primary voltage class from 11kV to 33kV are conventionally termed as Power Transformers. These transformers are generally used for stepping down voltage in receiving stations in the distribution network.
Assured Features
- The highest dielectric insulation property to withstand lightning impulse.
- Mechanical design to withstand short-circuit forces arising during faults.
- Optimum oven heating under vacuum is required to achieve the desired compression height and maximum insulation resistance (IR) to windings.
- Adequate ducts between layers, coils, and discs for maximum oil flow and reduced hot spot temperature.
- Step-lap designed CRGO laminations for lower losses and excitation current.
- Pre-compressed Insulation material for minimal moisture absorption.
- Permawood rings for uniform clamping.
Technical Specifications
| Ratings | UPTO 30 MVA |
| Voltage Class | UPTO 33 kV |
| No of Phases | 3 Phase |
| Frequency; | 50/60 Hz |
| Applicable Standards | IS 2026, IEC 60076, ANSI, IEEE, CSA |
| Insulating Fluid | Mineral Oil, Ester Oil both inhibited & uninhibited, as per IS/IEC and customer requirement, ASTM D-3487. |
| Class of Insulation | Class A |
| Tap Changer | OFF CIRCUIT TAP CHANGER, ON LOAD TAP CHANGER, as per customer requirement |