Substation equipment

GIS – Gas Insulated Switchgear



World-Class Partner

Mitsubishi Electric began its industry leadership in Gas Insulated Switchgear (GIS), building its first in 1968. In 1973, it installed the first 500kV hybrid gas-insulated substation.

Three years later, Mitsubishi Electric constructed the world’s first 550kV fully gas insulated switchyard at the Ohi Nuclear Power Station, which is the largest nuclear power plant in Japan. Since then, more than 20,000 GIS bays have been installed in substations worldwide.

**MindCore Technologies is an exclusive distributor only in Quebec, Ontario and Manitoba**

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Partner's website

Our GIS is so compact it can be located inside a building or underground, hidden from view and shielded from the elements.

A hybrid application of GIS employs the same dead tank circuit breakers, SF6 gas insulated disconnects and grounding switches to individual air-insulated arrangements. When GIS is used for individual voltage control applications, such as reactor or capacitor switching in an air insulated switchyard, utilities can achieve up to a 70 percent decrease in footprint.

Technical Data

Product brochure