go to the Gas-insulated switchgear product page Anonymous asked on Jan 11th, 2015 in Gas-insulated switchgear

What are the advantages of a single-interrupter versus a 2-interrupter circuit breaker in a GIS?

Olav Knudsen , Principal Engineer, Gas-insulated switchgear

ABB's answer

Single-interrupter circuit breakers require less than half of the SF6 used in a two-interrupter breaker and uses significantly less insulation material and parts as well as installation space. Aside from the obvious, a single interrupter breaker requires a less powerful drive, thus lighter structures and foundations. The breaker does not need grading capacitors which reduces the chances of the voltage transformers experience ferro-resonance oscillations which might damage the equipment.

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  • Olav Knudsen

    Olav Knudsen

    Principal Engineer, Gas-insulated switchgear

    High Voltage Products

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