Patent ID: 8717742

Claim:
A GIS (Gas Insulated Switchgear), the GIS comprising: a main bus compartment including a main bus-bar unit, a transfer bus compartment including a transfer bus-bar unit, a sealed circuit breaker compartment including a circuit breaker unit and a load side compartment including a current transforming unit and a transfer bus conductor electrically coupling the transfer bus-bar unit and the current transformer unit, wherein the circuit breaker unit is contained entirely in the sealed circuit breaker compartment, the sealed circuit breaker compartment being separately independent from the main bus compartment, the transfer bus compartment, and the load side compartment, wherein the transfer bus conductor passes from the transfer bus-bar unit through the load side compartment to the current transformer unit without passing through the sealed circuit breaker compartment, and wherein wherein the main bus compartment, the transfer bus compartment, the sealed circuit breaker compartment, and the load side compartment, are filled with an insulation gas, the insulation gas in the sealed circuit breaker compartment and the load side compartment are isolated from each other.