| 摘要 |
<p>PURPOSE:To miniaturize an earthing switch in a switching device. CONSTITUTION:Contactors 12 bundled by a garter spring 13 are provided between a collective earthing bar 11 in one body with three-phase earthing bars which make contact with or part from the fixed contact of a charging part by rising or falling and a grounded earthing metal part. And the width of a circumferential groove 5a is enlarged so that the contactors 12 can rise or fall relatively and also a circumferential groove 11a, on which the ends of the contactors 12 can be hung, is formed on the collective earthing bar 11.</p> |
