High-voltage Disconnect Switches Can Only Open And Close Circuits Under No-load Conditions.
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The circuit breaker High Voltage Disconnect Switch can only be switched on and off when there is no load current. This is because once a load current is present, the disconnecting switch cannot withstand the arc extinguishing and continuous switching, thus affecting its normal operation. Therefore, when formulating operation and maintenance procedures, "zero load current" must be taken as a prerequisite for switching on and off operations.
