It isolates the supply to guarantee maintenance safety. A disconnector has no arc-quenching device and cannot make or break load current or short-circuit current, so it must be operated only when the section is de-energized and the load is removed.
It isolates the supply to guarantee maintenance safety. A disconnector has no arc-quenching device and cannot make or break load current or short-circuit current, so it must be operated only when the section is de-energized and the load is removed.