Brief switchgear Five Anti and operating procedures

High Voltage Switchgear "Five Anti"
1. The high voltage switchgear vacuum circuit breaker inside the car after closing the test location, the car can not enter the work breaker position. (To prevent closing with load)
2. High Voltage Switchgear grounding knife within close position, the car can not enter the circuit breaker closing. (With a ground wire to prevent the closing)
3. The high voltage switchgear vacuum circuit breaker in the closing work inside the disk cabinet back door and door lock with a mechanical knife on the ground. (To prevent mistakenly charged interval).
4. The high voltage switchgear vacuum circuit breaker at work within the closing, ground knife can not be put together. (Antistatic articulated ground)
5. high voltage switchgear vacuum circuit breaker at work within the closing run, you can not exit the car breaker operating position. (To prevent negative Hera Knife)

Operation sequence
Transmission steps
1, first installed after the seal plate, and then shut down the front door.
2, operating grounding switch spindle and make opening.
3, with the transfer vehicle (platform trucks) will handcart (is in the open state) into the cabinet (test position).
4, the second plug into the socket on the static (test position indicator light), shut the front door.
5, the trolley with the handle from the test position (OPEN state) is pushed into the working position (working position indicator light, the test position indicator is off).
6, closing the circuit breaker.

Power outages (maintenance) Procedure
1, the circuit breaker opening.
2, with the trolley handle exit from the working position (OPEN state) to the test position.
3, (working position indicator is off, the test position indicator light).
4. Open the front door.
5, the secondary unplug static socket (test position indicator is off).
6, with transport vehicles will handcart (is in the open state) to exit the cabinet.
7, so that the spindle and earthing switch closing operation.
8, after opening the seal plate and the lower front door.
Note: arrester handcart and the (lower) PT handcart pulled directly at the bus runs outside the cabinet.