What Are The Matters That Need To Be Paid Attention To When Operating The High-voltage Isolating Switch?

Matters needing attention during high voltage isolator operation:
1. When high voltage isolator switch is far away from the circuit breaker and it is difficult to use mechanical interlocking, the lock key of hv isolator 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 hv isolator switch 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 high voltage electrical isolator operating mechanism. Before the grounding wire is not removed, isolator high voltage cannot perform the closing operation.
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 interlocking 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. Use the auxiliary contacts on the oil circuit breaker operating mechanism 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.