| 摘要 |
<p>PURPOSE: To prevent simultaneous no-voltage of two adjacent branches by using a connection device having at least one connection part capable of being cut off and after the connection part is removed, forming a predetermined insulating gap in a cut-off section and performing the feeding of a circuit breaker through a needle section switch. CONSTITUTION: The section 52 operates by a control mechanism 56, includes a three-phase line section switch 54, connects two needle section switches connected to a three-pole circuit breaker 34 and buses 14, 16 by a connection device 70 and is disposed inside a circuit breaker section 36. When either one of the needle section switches is closed, electric power is supplied to each branch by a first bus set 14 or a second bus set 16. Therefore, the simultaneous no- voltage of two adjacent branches can be prevented.</p> |
