What Are The Precautions When Operating A Vertical Fuse Disconnector?

Those who have read the previous article should know the matters needing attention when operating vertical fuse switch disconnector, then do you know what matters needing attention when operating nhrt40 vertical fuse switch disconnector? You can't be careless when operating this.

Matters needing attention when operating 35KV high-voltage disconnector:

1. When the high-voltage disconnector is far away from the circuit breaker and it is difficult to use mechanical interlocking, the lock key of the high-voltage disconnector can be stored at the circuit breaker or on the operating handle of the control switch of the circuit breaker. The key can only be taken out to open the corresponding disconnector after the circuit breaker is opened to avoid pulling the switch with load;

2. A mechanical interlocking device of the grounding wire is installed at the operating mechanism of the high-voltage disconnector. Before the grounding wire is not removed, the disconnector cannot be closed.

3. During maintenance, the high-voltage disconnector with grounding knife should be carefully checked to ensure that the mechanical interlocking device between the main blade and the grounding knife is in good condition. The grounding knife should be opened first when the main blade is closed.
4. A mechanical interlock should be installed between the high-voltage disconnector and the circuit breaker. A connecting rod mechanism is usually used to ensure that the disconnector cannot be opened when the circuit breaker is in the closed position.
5. The auxiliary contacts on the operating mechanism of the oil circuit breaker are used to control the electromagnetic lock so that the electromagnetic lock can lock the operating handle of the high-voltage disconnector to ensure that the operating handle of the high-voltage disconnector cannot be operated before the circuit breaker is disconnected.