Distribution Transformers

Ranges:3.3kV,6.3kV,6.6kV,11kV, 13.2kV,13.8kV,15kV,20kV,22kV,33kV,34.5kV
With or without on-load-tap-charger type distribution transformer is made of high-quality silicon-steel sheets, and laminated by steps, it is advantageous in low loss, low noise ,low voltage partial discharge and high anti short circuit capacity. The dynamical and thermal stability of this transformer ,of which the coils are winded by high-quality oxygen-free copper wire as well as used pre-compressing brackets processes and interior and exterior structure.


  • IEC 60076 power transformer
  • GB1094.3,5-2003 power transformer power transformer
  • GB/T6457-1999 3-phase oil immersed power transformer technical parameters and requirement.

Transformer normal service condition

  • Type: Outdoor Type
  • Normal use Environment: Elevation less than 1000m; Temperature Range :-25 °C - +40°C
  • Especial Environment: Elevation more than 1000m; Temperature Range :-45° - +40°C-
  • Installation Site: Nothing corrode air, noting obvious dirty mark.


  • Rated voltage:3.3kV,6.3kV,6.6kV,11kV, 13.2kV,13.8kV,15kV,20kV,22kV,33kV,34.5kV
  • Rated power:50kvA~2500kva
  • Two windings or three windings
  • On-load or no-load voltage tapping changer
  • Frequency:50HZ /60HZ
  • Vector group:Dyn5, Dyn11, Ynd11, Yna0d11 or others
  • Cooling:ONAN/ ONAF/ OFAF
  • Tap changer: optional
  • Rating plate :Yes (Rockwell brand or Customer brand)
  • Corrugated refrigeration panels:Yes ( Four sides of the transformer shell)
  • Oil draining valve: Yes
  • Oil level indicator : Yes
  • Thermometer : Yes
  • Oil conservator: Yes
  • Relay : Yes

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