| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a main line branch board in which handling of a protective panel is facilitated and workability is enhanced in branch line connecting work and maintenance/inspection work. <P>SOLUTION: The main line branch board 1 comprises bus bars 10A-10C, circuit breakers 17, and branch conductors 23L and 23R, and a protective panel covering the outer surface side of the branch board body 8 while exposing the operating parts 17a of the circuit breakers 17 operably, disposed in the branch board body 8. The protective panel consists of: a first protective panel 2 covering the front side of the bus bars 10A-10C, the branch conductors 23L and 23R, and the primary terminals 17b of the circuit breakers 17; and a second protective panel 3 covering the front side and the side surface side of the secondary terminals 17c of the circuit breakers 17. The second protective panel 3 is supported on the upper frame 6 and the lower frame 7 in the vicinity of the first protective panel 2 to open/close freely through hinge parts 3c, 6b and 7b. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
