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High Recycling Rate SF6/N2/CF4 gas mixtures CAMBODIA

High Recycling Rate SF6/N2/CF4 gas mixtures CAMBODIA

Cold Weather Applications of Gas Mixture (SF6/N2, SF6/CF4.Gas Mixture (SF 6/N 2, SF 6/CF 4) Circuit Breakers: A User Utility’s Perspective By. north on a high voltage direct current (HVDC). •Gas leakage rate: •< 0.5% per year at 20ºC •At -50ºC the IEC standard allows a leakage rate of 3 x the rate at normal temperatures.

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