GE's F35g is a g³-gas-insulated substation up to 145 kV, up to 3,150 A and 40 kA using GE’s revolutionary g³ gas mixture as an insulating and switching alternative to SF₆.

The F35g g³-GIS is designed to deliver the same performances and reliability features as today’s existing SF₆ switchgear, without SF₆'s environmental impacts. Compared to SF₆ switchgear, they feature:

• Same dimensions and footprint, no drastic addition of raw material such as aluminum compared with other SF₆ alternatives
• Same technical performance
• Same safety level
• Same reliability feature

Key Characteristics

• A drastically reduced impact of gas releases to atmosphere (99% vs. SF₆)
• The lowest environmental impact during the whole life cycle:
  • Impact on climate change: 72% reduction,
  • Best-in-class Life Cycle Assessment (LCA) considering all environmental aspects from manufacturing to end-of-life

The F35 is a compact and accessible GIS solution, with a bay footprint below the market average. Up to 2 bays are assembled together, wired, tested and shipped enabling shorter site works.

GE’s F35g is the first SF₆-free g³-gas-insulated substation up to 145 kV to complete ENA assessment in the UK.