... ~60Hz, voltage up to 500V. 1.Application BK series machine tool control transformer is suitable for circuit of 50~60Hz, voltage ... up to 500V, usually applied as power supply for machine tool electrical appliances, local lightings and indicator lamps. 2 ... -2000 189270145158±0.4122±3.59 × 11.5 BK Machine Tool Control Transofrmer