Extra High Voltage Transformer
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Conventionally oil cooled Transformers are categorized into Extra High Voltage, Power & Distribution Transformers.
All the Transformers of primary voltage class from 66kV and above are conventionally termed as Extra High Voltage (EHV) Transformers. These transformers are generally used for stepping down voltage from Transmission lines. EHV transformers generally have force cooling and a load tap changer. We at Lamco Transformers, have the facility to manufacture up to 50MVA, 132kV Class EHV Transformers.
ASSURED FEATURES
- Highest dielectric insulation property to withstand Lightening Impulse.
- Preheating of coils under vacuum to achieve desired compression height and maximum shrinking of coils.
- Permali wood clamping rings for uniform compression of primary and secondary windings.
- Coil clamping screws for sustaining high mechanical strength due to short circuit forces
- Adequate ducts between layers, coils, discs for maximum oil flow and reduced hot spot temperature.
- Step-lap-designed CRGO laminations for lower losses and excitation current.