| 摘要 |
PURPOSE:To reduce the area for cable installation and to allow a larger number of breakers to be stacked in multistage, by alternatively drawing out cables from both sides, right and left, of multistagestacked breakers. CONSTITUTION:In the center inside a board frame 11 mechanical rooms 13 are constituted in multistage where multiple breakers 12 are enclosed drawably. On the central backside a bus room on power source side 14 is formed where horizontal bus 16 is connected to a main circuit disconnection section 17 with a vertical bus 15. On the power source side of the main circuit disconnection section 17 a conductor on a load side 18 is provided, with which a cable 19 is connected. The conductor on the load side 18 draws out a cable terminal 20a from the upper stage to left side as seen head-on the breaker 12, a cable terminal 20d from next stage to right side, head-on from next stage to left side and the following cable terminals 20e, 20c and 20f. These cable terminals 20 and the cable 19 are enclosed in a cable room 19' provided on both sides of the mechanical room 13. In this way, as the space to deal with cables are widely provided right and left, multistage shack twice as many as in the conventional device becomes possible. |
