Gas insulated electrical apparatus

Claim 1

In an electrical apparatus of the type including a gas insulated bus bar and a switch apparatus associated with a plurality of circuit lines, said electrical apparatus having: a bus bar including a plurality of bus bar units disposed on a floor in alignment with each other and corresponding in number to the circuit lines, each bus bar unit including a case, a bus bar conductor, and a bus bar disconnecting switch housed in said case and branched out of said bus bar conductor and having a terminal at the top of said case, and a plurality of line circuit breakers each corresponding to each of said bus bar units and to each of the circuit lines, each line circuit breaker having a bus bar connection terminal, a line connection terminal, a line disconnecting switch, a grounding device connected through said line disconnecting switch to said line connection terminal of said circuit breaker, and a cable head connected to said grounding device, the improvement which comprises: a plurality of bases, each provided for a respective one of said line circuit breakers for mounting said circuit breaker, said line disconnecting switch, said grounding device and said cable head of said respective one of said line circuit breakers, to form respective units detachable from the rest of said electric apparatus and independently transportable, and a plurality of coupling bus bars, each mounted on each of said bases and mounted on said bus bar connection terminal of said circuit breakers and detachably connected to said terminals of said bus bar disconnecting switches, each coupling bus bar being detachable and connectible by vertical movement of the associated one of said line circuit breakers relative to the corresponding bus bar unit.