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Insulating gas electrical switchgear leakage test enervac

ALTERNATIVE GAS INSULATION IN MEDIUM-VOLTAGE …· PDF fileFor gas-insulated switchgear, it had been shown that ecological substitutes were not available which met all of the technical requirements and at comparable costs. In order to limit the environmental drawback of SF 6 technology, leakage rates of SF 6 have been limited since the early days. The first designs have been made for high-

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