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POWER TRANSFORMER

INTRODUCTION

Power transformers are key components in power networks. Their availability and longevity have a major impact on grid reliability and profitability.

WORKING

Power Transformers are used to “transform” voltage from one level to another, usually from a higher voltage to a lower voltage. They do this by applying the principle of magnetic induction between coils to convert voltage and/or current levels. Generally the higher voltage falls in the range of 11-22-33kV whereas lower voltage falls in 250 or 433V range. The frequency remains identical before and after the transformation of the current.

APPLICATION

  • Suburban areas
  • Industries
  • Power supply authorities

FEATURES

  • Optimum efficiency
  • Proportioning of core and winding losses using lamination
  • Electrolyte Grade 99.9% pure copper
  • Transposition in L.V. coil for current sharing in parallel conductors
  • Low temperature rise
  • Low maintenance cost

SPECIFICATION

RATING

APPLICABLE STANDARDS

COOLING

INSULATING FLUID

FREQUENCY

PRIMARY VOLTAGE

SECONDRY VOLTAGE

WINDING MATERIAL

TAPING

IMPEDANCE

INSULATION

VECTOR GROUP

Upto 10 MVA

IS, IEC, BS etc.

ONAN, ONAF

Mineral oil to Specification

50 Hz, 60 Hz

11KV/ 22 KV/ 33 KV

433 V

Copper

On Load tap changer, Off Circuit tap changer

In line with applicable standards

Class 'A'

DYN 11