Patent ID: 7515398
Filing Date: 2009-04-07
Classification: H02B

Abstract:
1. A gas-insulated switchgear assembly for three-phase alternating current transmission comprising, for each phase: a first disconnecting switch connected to a first main bus bar; a first circuit breaker connected to the first disconnecting switch; a second disconnecting switch connected to the first circuit breaker; a third disconnecting switch connected to the second disconnecting switch; a second circuit breaker connected to the third disconnecting switch; a fourth disconnecting switch connected to the second circuit breaker; a fifth disconnecting switch connected to the fourth disconnecting switch; a third circuit breaker connected to the fifth disconnecting switch; a sixth disconnecting switch connected to the third circuit breaker on an end and to a second main bus bar on another end; a first connecting bus bar branched off and connected between the second disconnecting switch and the third disconnecting switch, the first connecting bus bar connected to a first feeding line; and a second connecting bus bar branched off and connected between the fourth disconnecting switch and the fifth disconnecting switch, the second connecting bus bar being connected to a second feeding line, wherein: the first, second and third circuit breakers are arranged in such a manner that longitudinal axes thereof are in parallel with one another in one horizontal plane, the first, second and third circuit breakers for different phases being arranged side by side with one another; and the first main bus bars and the second main bus bars are arranged horizontally and in parallel with each other at a height different from a height of the horizontal plane including the longitudinal axes of the circuit breakers and in a direction different from the direction of the longitudinal axes of the circuit breakers; at least two out of the first, second and third circuit breakers are shifted in a lateral direction, and are arranged so as to be partially overlapped in the longitudinal direction; the first disconnecting switch is arranged in a straight line with the first main bus bar; and the sixth disconnection switch is arranged in a straight line with the second main bus bar.