Varelen Electric Co., Ltd

Dry type converter transformer

The advanced VPI (Vacuum Pressure Impregnation) technology is adopted to enable the products with excellent electric and mechanical performance

Dry type converter transformer
dry type rectifier transformer
dry type converter transformer

Related product parameters

Main specifications
Transformer type 3 phase  dry type transformer
Capacity 5000kva 
Input rated voltage  AC   10KV
Rated current  278A
Frequency 50/60HZ
Vector group Dyn11
Insulation class H, C
Winding material Copper
Impendance 6% - 8%

On-off inrush

Not exceeding 200A and dropping to rated current within 0.2s
overload capacity 110% long time; 150% 30min/h
No-load loss


Load loss


Temperature conditions

Altitude :≤1000m

Minimum temperature: -15℃

Maximum temperature: +45℃


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.


 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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