Interlocking the disconnector (isolator) control wiring with its associated circuit breaker can effectively prevent the inadvertent opening or closing of the disconnector under load. However, during operations involving bus-side and line-side disconnectors, human error may lead to an incorrect sequence of operations—an action strictly prohibited by switching principles and a known cause of power system accidents.To prevent such sequence errors, for substations and power plants that do not employ
11/11/2025
Consult
Tip
