| 摘要 |
PROBLEM TO BE SOLVED: To provide a switchboard having a three-phase stripe bus and a disconnector arranged to divide the bus into right and left in which a high conduction capacity is attained with a small size and the operability of the disconnector is enhanced. SOLUTION: The switchboard has three-phase stripe buses (4, 5 and 6) extending in the right and left direction when viewed from the front and fixed while directing the width side toward the front wherein each bus is connected with a disconnector (7, 8 and 9) arranged to divide the bus into right and left. The three-phase buses are arranged stepwise from an upper front side or an upper rear side toward a lower rear side or a lower front side, respectively, so that an upper bus is not exposed directly to convection by Joule's heat generated from a lower bus, and an operation handle (25) can be fixed easily to the operation protrusion of a disconnector from the rear surface of the switchboard. COPYRIGHT: (C)2007,JPO&INPIT
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