Patent ID: 7675738
Filing Date: 2010-03-09
Classification: H02B

Abstract:
1. A gas insulated switchgear comprising: circuit breakers of three phases; circuit breaker vessels of the phases for containing the respective circuit breakers of the three phases separately, the vessels being installed horizontally substantially in parallel with each other, each of the vessels having first and second branching sections of the corresponding phase and being arranged separated from each other in the longitudinal direction of the circuit breaker, insulating gas being filled in the vessels and held in a hermetically sealed condition; first bus bars of the three phases, the first bus bar of each phase being connected to the first branching section of the circuit breaker vessel of the phase; first disconnector and maintenance earthning switches of the three phases, at least a first disconnector and maintenance earthning switch being provided for each phase, the first disconnector and maintenance earthning switch or switches of each phase being connected to the first bus bar of the phase and also to main bus bars of the phase extending in a direction different from the longitudinal direction of the circuit breaker of the phase; second bus bars of the three phases, the second bus bar of each phase being connected to the second branching section of the circuit breaker vessel of the phase; second disconnector and maintenance earthning switches of the three phases, the second disconnector and maintenance earthning switch of each phase being connected to the second bus bar of the phase, insulating gas being filled in the second disconnector and maintenance earthning switches in a hermetically sealed condition; circuit breaker operating mechanisms of the three phases arranged separately, the circuit breaker operating mechanism of each phase being connected substantially onto a linking/connection section of the longitudinal end located close to the first branching section of the circuit breaker vessel of the phase; first disconnector and maintenance earthning switch operating mechanisms of the three phases for operating the first disconnector and maintenance earthning switches of the three phases; second disconnector and maintenance earthning switch operating mechanisms of the three phases for operating the second disconnector and maintenance earthning switches of the three phases; first disconnector and maintenance earthning switch operation links of the three phases for connecting respectively the first disconnector and maintenance earthning switches and the first disconnector and maintenance earthning switch operating mechanisms of the three phases; and second disconnector and maintenance earthning switch operation links of the three phases for connecting respectively the second disconnector and maintenance earthning switches and the second disconnector and maintenance earthning switch operating mechanisms of the three phases, wherein the second disconnector and maintenance earthning switch operation links of the three phases being arranged so as to pass through inter-phases of the first bus bars, and an operating panel of the circuit breaker operating mechanism, an operating panel of the first disconnector and maintenance earthning switch operating mechanism and an operating panel of the second disconnector and maintenance earthning switch operating mechanism of each phase being substantially arranged in a common flat plane horizontally and in parallel with each other.