Power Transformers Dealers in Navi Mumbai

In cast resin dry type 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. Higher dynamic short circuit withstands strength as compared to oil immersed and conventional dry type transformers because of fibre glass reinforced epoxy encapsulation. No partial discharges can occur during operation. The insulation material used is glass fibre reinforced with epoxy resin of class 'F' which can withstand wide temperature variation. Due to high quality insulation material the transformer is practically non-inflammable by an electrical arc, special fire protection measures are not required. Due to encapsulation of coils with cast resin the coils dimensions are stable & no coil tightening is required to maintain the short circuit strength. Also no check of oil level and electrical insulation/oil is required. This leads to saving in cost on account of maintenance. As cast resin transformers are solidly cast, problem associated with oil filled transformers like oil leakage and pilferage of oil is completely avoided. 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, thers 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.

We at TRANSPOWER have an extensive record as a trusted manufacturer of wide range of Transformers (which includes Oil filled, VPI and Cast Resin), reactorschokes, CT’s, PT’s & coils to cater different industries as per the applications & specifications of customers. As we are committed to customer satisfaction by providing wide range of power solutions, we had great interaction with different field customers with their challenging requirements. Our organisation core competency got evolved over the years to benchmark ourselves against global leaders by utilising strategic combination of our last 30 years’ experience, design capabilities, innovative ideas. Further this helped us to have better access to most advanced magnetic & insulating materials to provide our customers quality products with optimum cost. Presently we design, develop, produce and deliver wide range of high quality Magnetics as per international standards.

We offer power transformer. Technical specifications ratings upto- 20 mva voltage class- upto 33 kv no of phases upto- 3 phase frequency- 5060 hz applicable standards- is 2026, iec 76, ansi, ieee insulating fluid- pcb free mineral oil, both inhibited & uninhibited, as per isiec and customer requirement class of insulation- class a tap changer- octc, oltc, as per customer requirement assured features highest dielectric insulation property to withstand lightening impulse. Pre heating of coils under vacuum as 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.

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