SF₆-free g³ Gas-Insulated Lines
SF₆-free g³ Gas-Insulated Lines
For electrical networks up to 420 kV
Better for the grid, better for the planet
- SF₆-free with g³, GE Vernova's game changing alternative to SF₆ as insulating medium enables a reduction of 99% of global warming potential
- First-in-class gas sealing system
- g³-420 kV GIL is a dual gas busbar system also compatible with SF₆. It allows TSO to still use SF₆ while being ready for up-coming regulations.
- Improved tightness thanks to sealing length divided by 2 compared to previous version
Field-proven experience
- Design grounded with 50 years of experience acquired with SF₆ gas insulated lines
- g³ gas–insulated lines were the World first 420 kV SF₆-free GIL on the market (2015) and the first g³ product available on the market
- Since then, some 10 sites – 5000+ meters
Smart grid features
- Full-digital monitoring (BWatch and PDWatch monitoring devices)
SF₆-free g³ Gas-Insulated Lines
SF₆-free g³ Gas-Insulated Lines
For electrical networks up to 420 kV
Better for the grid, better for the planet
- SF₆-free with g³, GE Vernova's game changing alternative to SF₆ as insulating medium enables a reduction of 99% of global warming potential
- First-in-class gas sealing system
- g³-420 kV GIL is a dual gas busbar system also compatible with SF₆. It allows TSO to still use SF₆ while being ready for up-coming regulations.
- Improved tightness thanks to sealing length divided by 2 compared to previous version
Field-proven experience
- Design grounded with 50 years of experience acquired with SF₆ gas insulated lines
- g³ gas–insulated lines were the World first 420 kV SF₆-free GIL on the market (2015) and the first g³ product available on the market
- Since then, some 10 sites – 5000+ meters
Smart grid features
- Full-digital monitoring (BWatch and PDWatch monitoring devices)
Positive impact of 100 meters SF₆-free GIL
Calculate the CO2e reduction of my project with GE Vernova's g³ CO2 equivalent calculator
g³ gas GIL Specifications
| RATINGS | |||
| Voltage | kV | 362 | 420 |
| Standards | IEC/IEEE | IEC/IEEE | |
| Frequency | Hz | 50/60 | 50/60 |
| Withstand voltages, to earth - Short-duration power-frequency - Switching impulse - Lightning impulse | kV kV (peak) kV (peak) | 650 1050 1425 | 650 1050 1425 |
| Continuous current | A | 4,000/5,000 | 4,000/5,000 |
| Short-time withstand current | kA | 63 | 63 |
| Peak withstand current | kAp | 170 | 170 |
| Temperature | °C | -30 | -25/-30 |
Applications
NATIONAL GRID, UK - Sellindge Substation, 230 m of 420 kV GIL, 63 kA, 4000 A, The world first SF₆-free g³ GIL
SP ENERGY NETWORKS, UK - Kilmarnock Substation, 177 m of 420 kV SF₆-free g³ GIL, 63 kA, 4000 A
SSEN TRANSMISSION, UK - New Deer Substation, 1020 m of 420 kV GIL, 40 kA, 4000 A, The longest SF₆-free g³ GIL in operation
