| 摘要 |
PURPOSE:To close a grounding circuit switchgear for meggering of the insulation resistance of the load line of an enclosed switchboard in which a drawer type breaker is housed only by drawing out the breaker to a disconnecting position. CONSTITUTION:A grounding circuit is switched in such a manner that the grounding circuit is closed by a movable contactor 7 which is attached to a shutter mechanism 3 shielding the front charging part of a fixed contact part 1b separated from a movable contact part following the drawing out a breaker 1 and a fixed contactor 5 composed of a spring material connected to the rear of a load side fixed contact part with a load side wiring 4. |
