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Mar 16, 2017

1. electrical equipment maintenance, providing an electrical interval, and is a visible point in order to ensure the safety of maintenance personnel.

2. cannot load disconnecting switch operation: cannot load or a load operation, could not score, and load current and short-circuit current, but can take small load interrupter and line operations.

3. General power-supply operation: before closing the isolating switch, or load a class after the circuit breaker switch off operation: disconnect circuit breaker or load class switch, disconnect after isolating switch.

4. selection and other electrical devices are the same, its rated voltage, rated current, dynamic current and thermal currents are required to meet the needs of applications.

Isolating switch is disconnected without load current circuit. maintenance disconnect the device from power supplies have an obvious point, in order to ensure the safety of maintenance personnel, isolating switch special ARC device cannot cut off the load current and short-circuit current, circuit must be in operation only in the case of the circuit breaker switch.