35KV, 3 phase epoxy resin cast dry type no-load voltage regulation power transformer is just following market demands of anti short circuit ability and mechanic strength, low loss, low noise, low partial discharge and large capacity.
Workmanship and features:
1.Low loss: no-load loss test value: 20.717kw, no-load current test value: 0.13%, rated tap on-load loss test value: 82.252kw
2.Low partial discharge: as per IEC and GB test standard, three phase partial discharge test value all ≤10PC
3.Low temperature rise: with H grade insulation material, as per design of insulation temperature rise: coil temperature rise＜100K. With 200 grade composite varnished wire, density of current＜2.1A/mm2, and workmanship of non-filled insulation, with multiple heat dissipation air way in the middle to guarantee coil lower temperature rise and enough heat.
4.Low noise: test value: self cooling by 58dB
5.Iron core magnetic density＜1.53T, with 5 grade step-in fully inclined juncture which makes no-load loss, no-load current noise down widely.
6.Whole structure: hard support between low voltage coil and iron core; winding is with 200 grade composite varnished wire, and glass fiber between layers, with HUNTSMAN company H grade epoxy resin cast in the state of low vacuum increasing mechanical strength; with special” air flue rod” inside coil increasing support point and coil mechanic strength.