| 摘要 |
PROBLEM TO BE SOLVED: To shrink the width of a gas container and reduce the installation area of a power receiving and transforming facility, etc., and reduce the facility cost by lessening a spacing between bolts in the adjacent peripheral sections of installation boards small. SOLUTION: A switchgear has installation boards 11 on the left and the right of a front board 1 of its main body. Each of the installation boards 11 has an operator in the front side and a cut-off section on the rear side and is fastened with bolts by the periphery. In the periphery of one of the installation boards which is adjacent to the periphery of the other installation board, intermediate projecting sections 15 where bolt holes 14 are formed at a predetermined pitch are formed between an upwardly projecting section 12 with a bolt hole 14 and a downwardly projecting section 13 with a bolt hale 14 and recesses 16 are formed between the upwardly projecting section 12 and the intermediate projecting section 15 and between each two intermediate projecting sections 15 and between the intermediate projecting section 15 and the downwardly projecting section 13. In the periphery of the other installation board, recesses 17 and projecting sections 18 are so formed as to be fitted in with the upwardly projecting section 12, the intermediate projecting sections 15, the downwardly projecting section 13, and the recesses 16. In each of the projecting sections 18, bolt holes 14 are formed at nearly the same pitches as the said ones. Then, the adjacent peripheries of the two installation boards are drawn near. |
