Power Transformers

 SKIPPER manufactures Power Transformers from 2 MVA to 60 MVA, upto 161KV, with ON-LOAD Tap changers. Our plants are equipped with skilled workforces, world class machineries, modern tools and backed by state of art technology.

Design

The windings form the most vital part of the transformer. Highly sophisticated design techniques are applied for electrical, machinery or set up and thermal stability.

Helical and continuous disc type with interleaved windings are made as they provide maximum strength ,short circuit withstand capabilities and even distribution of impulse voltage . In case of multiple radial wires continuous transpositions are done to eliminate inter-strand circulating currents.

The coils are pressed before core-coil assembly to ensure proper trouble free service. Clamping rings are placed on top and bottom of the winding to ensure high axial short circuit withstands capability to the transformer.To reduce losses & to control temperature, continously transposed conductors with better insulation are used to give a high quality transformers in respect of mechanical, electrical & thermal withstand capabilities transformers.

Process

The core coil assembly is gently lowered into the finished and cleaned tanks and locked into position. The assembly then goes for a controlled heating and vacuum drying process to ensure complete removal of moisture from the assembly. At the end of the drying process oil is filled under high level of vacuum in the transformer and then fixing of external components and top cover assembly is done.

Soon after the vacuum filling, the transformer will be offered for testing following the expiry of a specified standing time.

Testing

Each transformer is subjected to all routine tests to ensure compliance with standards / customers specifications. All accessories are thoroughly checked for the functional compliance prior to the dispatch.