STS TRANSFORMERS manufacturing plant is a potentially growing company catering to energy efficient products with star ratings. We lay our emphasis on good quality and trouble free product performance at competitive prices. Our focus lies in manufacturing compact & power efficient transformers. Our expert technocrats satisfy our customer needs by designing “Customized Compact Transformers” & assuring an everlasting service guarantee.

Power and Distribution Transformers

Our works are equipped with all requisite transformer testing facilities for quality assurances. Each transformer is tested for all tests conforming to IS:1180 and IS:2026 by qualified and experienced engineers with precision grade instruments.

The tests involved are following:

• Measurement of insulation resistance.
• Measurement of voltage ratio.
• Check up of vector group and polarity.
• Induced over voltage test at double voltage and double frequency.
• Separate source high voltage test of HV side and LV side.
• Measurement of no load losses and magnetizing current.
• Measurement of load losses and impedance voltage.
• Measurement of zero sequence current.
• Measurement of HV winding and LV winding resistance.
• Measurement of temperature rise of winding and oil of transformers at full rated load.
• Pressure and vacuum testing of transformer for permanent deflection of body.
• Check up of dielectric strength of transformer oil.