| 摘要 |
PURPOSE:To make assemblage easy and to miniaturize an apparatus by connecting two drawer type circuit-breakers on upper and lower fixing frames with a main bus on the rear face of a front-opened housing via power side branch conductor and with a load side terminal via CT on the underside of the frame. CONSTITUTION:A power side branch conductor 2 is caused to diverge from a three- phase main bus 1 arranged longitudinally on the rear face of a housing 17, where only the front opens, and power side terminals 4, 4 are provided in the upper and lower parts of the conductor. The power side terminals 3a of two drawer type circuit- breakers 3 mounted on upper and lower circuit-breaker fixing frames 21 are joined to the power side terminals 4. Also the load side contacts 3b of the drawer type circuit- breakers 3 are connected with load side conductors 24 via load side terminals 5. After a voltage CT 22 is connected with the load side conductors 24, first-and third-phase load side conductors 24a are connected with the voltage CT. A main circuit cable 8 for supplying unshown load with power is connected with load side conductors 24a, 24, 24a for respective phases. A high-voltage live part is shielded by a protective cover 16. Thus, it is possible to easily perform a precision assemblage and to miniaturize an apparatus. |
