GIS - Gas Insulated Switchgear
GIS - Gas Insulated Switchgear
SF6 insulates 3 times better than air, providing.
- Compact design
- Climate-independent
- Good quenching properties
- Recyclable material (closed recycling circuit)
- Chemically inert (non-corrosive), Non-toxic; Non-inflammable
Hence GIS Switchgears find use in both primary and secondary distribution levels. The GIS switchgear is ideal for the harsh environmental conditions of the Gulf. Hence it is not a surprise that utilities are preferring GIS technology even in secondary distribution. Since all the HV current carrying parts are in SF6 gas, there are no chances of flashover / internal arc, and the switchgear are climatic independent.
KEY TECHNOLOGIES FOR GAS-INSULATED SWITCHGEAR
- Insulating medium SF6
- Laser welding
- Gas tightness and dew-point development
- Pressure relief device / pressure coordination
- Ready-for-service indicator
- Bushings
- Operating mechanism technologies
- Principle of three-position switch
- Earthing switch barrier, fuse replacement
- Operating kinematics and switch position indication
- Outside-cone and inside-cone connection
- Capacitive voltage detecting systems
