BK(DK) Series control transformer(Hereafter call transformer) is suitable for circuit of 50~60Hz, voltage up to 500V, usually applied as power supply for machine tool electrical appliances, locallightings and indicator lamps power supply.

  According  to different structures,  BK  transformer belongs to shell type,  and according to the installation mode, it belongs to vertical type.

  B:Transformer                    D: Single Phase

  K: Control                          K: Control    

  x: Rated Capacity               x: Rated Capacity

1.Ambient air temperature: -5 degree ~+45 degree , the highest monthly mean temperature should not exceed +30°C;
2.Altitude for installing place should not exceed 1000m;
3.When the ambient  air  temperature is +40°C, the relative humidity should  not  exceed 50%, and  it allows  higher relative humidity under lower temperature. Max average humidity in the  dampest month is 90%,  meanwhile  the lowest  average  temperature  of  this  month is  + 25°C,  and  condensation  on  the  product  surface  caused  bytemperature change should be taken into consideration.