Varelen Electric Co., Ltd

Transformer winding

  • •cast resin windings have high mechanical strength and no partial discharge and are non-flammable
  • •The windings are manufactured with aluminium or copper conductors
  • •Designed with HV/LV foil winding  and round wire winding
  • •our team cast resin winding technology, resin guarantees the best dielectric performance, short-circuit resistance, and long-term reliability, customized up to 25mva transformer winding
  • •make dry type windings a cost-effective choice for customers looking to optimize their transformer investments, especially for applications where maintenance and safety are critical concerns.

 

Transformer winding
transformer winding
transformer coil
Low voltage winding
winding coils

Related product parameters

Main Specification
Transformer Type cast resin
Rated capacity up to 25mva
Rated voltage up to 36kv
Frequency 50/60Hz
Phase 3 Phase
Winding material Copper /Aluminum
Insulation class F, H, C
Vector group Yyn0
Temperature Class E2 C2 F1
Temperature operation +40~ -60℃
Short circuit resistance 4-8%( on request)

winding drawing

FACTORY TEST

For each transformer are prepared and issued a test report, in accordance with IEC 60076. except for routine tests, we also offer type tests and specialised tests to meet all customer requirements. We make what matters work for our customers in a safe and reliable way.Testing

Routine test

  • Measurement of winding resistance
  • Measurement of voltage ratio and check of phase displacement
  • Measurement of short-circuit impedance and load loss
  • Measurement of no-load loss and current
  • Separate-source AC withstand voltage test
  • Induced AC withstand voltage test
  • Partial discharge measurement

Type test

  • Lightning impulse test
  • Temperature-rise test

Special test

  • Partial discharge measurement
  • Measurement of sound level
  • Short-circuit test

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