| 摘要 |
PURPOSE: A polygonal bus bar and a switchboard with a movement preventing support thereof are provided to maximize the allowable currents of a main bus bar, thereby reducing the material cost of the main bus bar. CONSTITUTION: An enclosure (1) has a predetermined size. A power distribution device (2) includes a bus bar, an air circuit breaker (22), a molded case circuit breaker (23), and a relay. The power distribution device is installed within the enclosure. The enclosure includes an outer frame, a plate cover, a frame support (13), and a device mounting plate. The outer frame includes a vertical frame (111) and a horizontal frame (112). The bus bar includes a main bus bar (211), a branch bus bar (212), and a plurality of recesses. The main bus bar is supported by a movement preventing support (213). The movement preventing support is fixed to the frame support, and includes a lower stator, an upper cover, a first clamping bolt, and a second clamping bolt. |
