New Concept of Switchgear for Replacing SF6 Gas or Gas Mixture
Since 1950 years’, in order to minimize the substation area, SF6 gas insulated switchgear has been energetically developed. Even at this moment, a new principle to improve interruption ability or insulation is considered and further reduction of switchgear size is being made to innovate new GIS. At moment, 550kV-63kA one-break circuit breaker as well as 1100kV UHV breaker is realized and the former is practically used.
KeywordsCircuit Breaker Integral Type Minus Pressure High Voltage Application Solid Insulation
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