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Industrial Systems

GIS/GCB Gas Insulated Switchgear

GIS(up to 420kV)

420kV GIS

420kV GIS
Rating
Rated voltage 362/420kV
Rated lightning impulse withstand voltage 1300/1425kV
Rated switching impulse withstand voltage 950/1050kV
Rated frequency 50/60 Hz
Rated current 2000/3150/4000A
Rated short time withstand current 40/50/63kA-3sec.
Rated gas pressure 0.7 MPa(GCB)/0.5 MPa(GIS)
Applied Standards IEC

Sectional View of a Bay with Double-Busbar and Cable

Sectional View of a Bay with Double-Busbar and Cable


Typical Arrangement (with one break GCB)

Double Busbar System
Double Busbar System


One and a half Circuit Breaker System
One and a half Circuit Breaker System

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