GAS INSULATED SWITCHGEAR FOR FUNCTION OF MAINTENANCE

摘要

A gas insulated switchgear for a maintenance function is provided to facilitate maintenance and repair of a bypass bay by installing a 3-way switch at a third bus of the bypass bay without additional grounding. A gas insulated switchgear includes a main bay, feeder bay(200), and bypass bay. The main bay supplies power the feeder bay which supplies power to a load through a first bus(A) and a second bus(B). An internal third bus of the bypass bay is connected with a third bus of the feeder bay through 3 way-switch. The bypass bay supplies power to the feeder bay according to the 3-way switch operation through the third bus when power supply failure is generated. The bypass feeder bay maintains the system immediately according the ground operation of the 3-way switch.