DPC-4-800 /XC2 Chasis Truck Series For Lower-layer

DPC chasis truck series is major used for withdrawable switchgear load bearing circuit breaker ,mutual inductor and so on component,propulsion and exit ,as conponent with bus busbar connecting subsidiarity. chassis and circuit breaker terminal institution with cabinet other interlock device is fitting work,can satisfy GB3906 “Fail safe”  interlock demand,detail function as follow:

1In handcart  in test/isolation or work position , circuit breaker can switch on,but circuit breaker switch on later,     the handcart cann’t  move ,thus it prevent the belt point error close grounding switch.

2..handcart in work position or leaving test/isolation position about 10mm,earthing switch isn’t switching on   to prevent the belt point error close grounding switch.

3.when earthing switch is switching on ,the handcart can’t move from test/isolation position ,to prevent earthing   switch switching on position closing circuit

4.when the chassis into the cabinet,once leaving in test /isolation position,handcart can’t withdraw from the cabinet