| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a branch line branching device which can be used commonly even when current-carrying capacity is different within a fixed range, and whose branching conductor can be used as a commonized part. SOLUTION: Branching conductors 5 to 8 are made into commonized parts by branching branch lines using bus-bars 2R, 2N and 2T with large current- carrying capacity, and providing a common use to a branch line branching device of small capacity. The adjacent interval E of the bus-bars 2R, 2N, and 2T is set so as to be smaller than the optimum edge surface interval of the bus-bar whose current carrying capacity is maximum, and the occupying space of the whole device is suppressed. In the case of use with the maximum current- carrying capacity, a shield bar 10 is formed between the bus-bars 2R, 2N, and 2T. The shield bar 10 is formed out of an insulating body, and increases the short-circuit distance of the adjacent bus-bars 2R, 2N, and 2T, it is thus possible to prevent generation of a short-circuit due to atmospheric discharge.</p> |
