Powertech transformers is recognized as a leading and most reliable three phase cast resin dry type transformer manufacturer, supplier and exporter from India. Our cast resin dry type transformers comply with national as well as international standards such as IS 11171, IEC 60076-11, BS and CE. Also we use enclosure of IP55 Degree of Protection rating.
We manufacture cast resin dry type transformers up to 1 MVA and 11 kV Class. These transformers are air cooled.
Cast resin dry type transformers are used for indoor as well as outdoor applications. In these transformers, the complete encapsulation of primary and secondary winding in epoxy resin prevents penetration of moisture into windings. The cast resin offers very good protection against adverse ambient conditions. These transformers can work without disruption of service at 100% humidity. Due to the high grade insulation material, coils are non-hygroscopic & the transformer can be switched on directly without pre-drying even after a long period of service interruption. Contrary to the conventional dry type transformers the cast coil transformers are better in respect of impulse voltage withstand strength.
These transformers are generally smaller in dimensions and lesser in weights. The construction and installation cost for the sub-station can be reduced by adopting dry type transformers. Without fire or danger of explosion, it is possible to place the transformers near to the load centre. Also, these transformers do not need construction of special fibre brick walls or oil pits, which reduces the overall civil works. Additionally, since LT cables are not required, there is also saving in cost on account of expensive cable laying works. Since no oil is used in these transformers, there are no chances of contamination of ground water due to oil leakage.Application of Cast Resin Dry Type Transformer
These transformers are used in small and medium voltage distribution network for hotels, feeding basements or stilts of high-rise buildings, air ports, stadium, shopping malls, chemical, refinery plants and industries located in coastal regions