| 摘要 |
<p>PURPOSE: A maintenance method for a gas insulated switchgear is provided to prevent power outage from an electric power substation by obtaining one or more bus lines from double bus lines. CONSTITUTION: A first bus line(210) connected to a first disconnector(110) becomes closed. Parallel connection is maintained by attaching a cover(510) to the first bus line which is separated from the first disconnector. The first bus line becomes closed and a repaired first disconnector is combined. The parallel connection is maintained by opening the first bus line. A second bus line(220) is closed and a second disconnector(120) is separated. [Reference numerals] (AA) First motion: ON; (BB) First motion: OFF; (CC) Second motion: ON; (DD) Second motion: OFF</p> |
