Switch cabinet power failure (maintenance) operation

Open the circuit breaker handcart

Withdraw the handcart from the working position (open state) to the test position with the handle

(the working position indicator is off and the test position indicator is on)

Open the front middle door

Pull auxiliary plug off the electrostatic socket

(test position indicator off)

Pull the handcart (open) out of the cabinet with the transfer truck

Operate and close the earthing switch shaft

Open the rear closing panel and the front lower door

Note: when the bus is running, the lower arrester handcart and the middle (lower) Pt handcart can be directly pulled out of the cabinet