126kV HGIS
Product Characteristics
ZHW-126, hybid gas insulated switchgear or half gas insulated switchgear. It is one kind of complete apparatus which is filled with SF6 as insulating and arc extinction medium, and it combines components like circuit breaker, disconnector, earthing switch, built-in current transformer(external current transformer is busbar penetrating type), inlet and outlet line bushing into one earthing metal enclosure. It is applicable to power system with three-phase 50Hz, rated voltage of 72.5 to 126kV.
Product Parameters

Rated voltage (kV)

126

Rated current (A)

3150

Rated short-circuit breaking current (kA)

40

Rated short-time withstand current/time (kA/s)

40/4

Rated peak withstand current (kA)

100

Rated power frequency withstand voltage (kV)

To earth

230

Across breakers

230+70

Rated lightning impulse withstand voltage (kV)

To earth

550

Across breakers

550+100