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Intelligent sf6 cf4 gas mixtures LATVIA

Intelligent sf6 cf4 gas mixtures LATVIA

COLD-WEATHER APPLICATION OF GAS MIXTURE (SF6/N2, We have been purchasing mixed-gas circuit breakers since 1988. These initial circuit breakers were purchased with a 0.5 MPa mixture (0.31SF 6 + 0.2N 2) at 20 oC. In 1990, a new gas mixture of SF 6 and CF 4 became available. This new mixture offered some very important advantages over the SF 6 and N 2 mixture. A circuit breaker filled with the.

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