SF₆ Gas-Insulated Lines
At 420 kV, SF₆ today – Ready for g³ gas tomorrow
Ready for future SF₆ gas regulations
Anticipating future SF₆ regulations, from 2022 onwards, GE’s versatile 420-kV SF₆-GIL are fully g³-gas compatible. This dual gas equipment allows TSOs to easily switch from SF₆ to GE’s SF₆-free g³ solution in the future.
Main Characteristics
Environment friendliness
- SF₆ mass reduced by more than 15% compared to previous version
- To go further, SF₆-free option with g³ gas allows 99 % CO2e reduction
- At 420 kV, new SF₆-GIL launched in 2022 are g³-gas compatible
- First-in-class gas sealing system
- Improved tightness thanks to sealing length divided by 2 compared to previous version
Reliable experience
- Design grounded with 50 years of experience
- Superior know-how based on more than 200 km of GIL installed worldwide
Smart grid features
- Full-digital monitoring (BWatch and PDWatch monitoring devices)
SF₆ Gas-Insulated Lines
At 420 kV, SF₆ today – Ready for g³ gas tomorrow
Ready for future SF₆ gas regulations
Anticipating future SF₆ regulations, from 2022 onwards, GE’s versatile 420-kV SF₆-GIL are fully g³-gas compatible. This dual gas equipment allows TSOs to easily switch from SF₆ to GE’s SF₆-free g³ solution in the future.
Main Characteristics
Environment friendliness
- SF₆ mass reduced by more than 15% compared to previous version
- To go further, SF₆-free option with g³ gas allows 99 % CO2e reduction
- At 420 kV, new SF₆-GIL launched in 2022 are g³-gas compatible
- First-in-class gas sealing system
- Improved tightness thanks to sealing length divided by 2 compared to previous version
Reliable experience
- Design grounded with 50 years of experience
- Superior know-how based on more than 200 km of GIL installed worldwide
Smart grid features
- Full-digital monitoring (BWatch and PDWatch monitoring devices)
SF₆-GIL Specifications
| RATINGS | |||||
| Voltage | kV | 253 | 420 | 550 | 800 |
| Standards | 245 | IEC/IEEE | IEC/IEEE | IEC/IEEE | |
| Frequency | Hz | 245 | 50/60 | 50/60 | 50/60 |
| Withstand voltages, to earth - Short-duration power-frequency - Switching impulse - Lightning impulse | kV kV (peak) kV (peak) | 460 - 1050 | 650 1050 1425 | 740 1175 1550/1675 | 960 1550 2100 |
| Continuous current | A | 4,000 | 5,000 | 5,000/6,000 | 5,000 |
| Short-time withstand current | kA | 63 | 63 | 63 | 63 |
| Peak withstand current | kAp | 170 | 170 | 170 | 170 |
| Temperature | °C | -25/-30 | -30 | -25/-30 | -25/-30 |
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) | 520 950 1175 | 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 |
Applications
 |  |
| 420 kV SF₆ GIL - Total length: 17,000 m | 420 kV SF₆ GIL - Total length: 15,000 m |
 |  |
| 550 kV SF₆ GIL - Total length: 5,900 m | 420 kV SF₆ GIL - Total length: 2,500 m |
 |  |
| 245 kV SF₆ GIL - Total length: 2,100 m | 362 kV SF₆ GIL in shaft (140 m high) - Total length: 900m |
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