Gas-insulated switchgear

The F35g is a g³ gas insulated switchgear up to 145 kV, 3150 A and 40 kA that uses GE’s revolutionary g³ gas mixture as an insulation and switching alternative to diesel.

The F35g with g³ is designed to provide the same performance and reliability as existing gas appliances. In this way, the environmental impact of gas segregation is avoided. Compared to gas-fired power plants, they have the same dimensions and space requirements, without requiring drastically more raw materials, such as, compared to other SF₆ alternatives. B. aluminum, must be used. In addition, the same technical design, level of security and reliability are maintained.

The most important features include the very low impact of gas emissions on the atmosphere (99% compared to SF₆). In addition, it has a first-class ecological balance, which takes into account all environmental aspects from production to the end of its life.

The F35g is a compact and affordable solution with a footprint below the market average. Up to 2 compartments are assembled, connected, tested and shipped, reducing on-site labor time. It is the first non-gas g³ gas insulated substation up to 145 kV to be rated by ENA in the UK.

GE leverages its 50 years of experience in the design, material selection, development, engineering, manufacturing and maintenance of gas-insulated substations. GE F35g meets the requirements of networks up to 145 kV for power generation, transmission, distribution and heavy industrial applications.

Local control

A range of options are available for the F35g on-site control unit:

• Integrated or standalone.
• Conventional, digital or a combination of both.

The advantages of a digital control unit are numerous:

• Reduced number of cables.
• Compact cabin.
• Ability to specify requirements at a later date.
• The device control unit offers flexible configuration options, expanded communication and functionality.
• Significant savings on installation costs.
• Centralized maintenance.

Managed switching – RPH

The F35g can be equipped with a digitally controlled circuit in combination with a single-pole automatic switch.

Optimizing the closing and opening of the switch is extremely important. This is because unintentional switching can lead to high transient overvoltages and/or high inrush currents.

These transients place stress on the substation and grid equipment, resulting in accelerated aging or, in the worst case scenario, a fire in the high-voltage equipment.