High voltage gas insulated switchgear, hv gis, for single or three phase operation

(canceled)

HV GIS according to claim l, whereby the disconnector module comprises a circuit breaker and/or an earthing switch connected to the main bus bar.

Method for operating a high voltage gas insulated switchgear, HV GIS, the method comprising:

• providing a plurality of disconnector modules associated to each phase, whereby the disconnector modules are filled with an insulating gas, each disconnector module comprises a disconnector configured for connecting a feeder connection to a main bus bar and the disconnector modules are interconnected with the main bus bar associated to each phase and extending through all disconnector modules thereby forming a main housing for the respective phase with the insulating gas surrounding the main bus bar, and
• providing a plurality of auxiliary modules associated to each phase, whereby the auxiliary modules are filled with the insulating gas and are interconnected with an auxiliary bus bar configured for increasing a current carrying capability of the HV GIS and associated to each phase and extending through all auxiliary modules thereby forming an auxiliary housing for the respective phase detachably attached and/or provided separate to the main housing with the insulating gas surrounding the auxiliary bus bar, whereby
• at least two of the disconnector modules and auxiliary modules of the respective phase comprise a coupling connection connecting the main bus bar and the auxiliary bus bar between the respective disconnector module and the respective auxiliary module.