| 摘要 |
PROBLEM TO BE SOLVED: To provide a small switchboard by arranging bus bars efficiently. SOLUTION: Three-phase longitudinal bus bars 5R, 5S and 5T are fixed to extend vertically along a side board 1 in the space on the rear side of the switchboard. A pair of longitudinal bus bars are employed in each phase while being held by a pair of holding members 6 and 7 of molded insulator. One holding member 6 is fitted with the longitudinal bus bar 5R in two grooves on the left side out of six grooves for three phases and fitted with the longitudinal bus bar 5T in two grooves on the right side. The other holding member 7 is fitted with the longitudinal bus bar 5S in two central grooves. When these holding members 6 and 7 are viewed from the upper surface of the switchboard, the longitudinal bus bars 5R, 5S and 5T cooperate to be located at the apex of a regular triangle and fixed to the side board 1 and an intermediate frame member 2 through a spacer 8. COPYRIGHT: (C)2005,JPO&NCIPI
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