Measurement of Electric Conductivity of Hot Gas in a SF6-circuit Breaker Interrupting Fault Currents
Keywords:SF6-circuit breaker, hot gas flow, electric conductivity
The realization of a new measurement method to determine electric conductivity of hot SF6-gas during interruption fault currents in an original self-blast circuit breaker is presented. The method is based on evaluation of phase shift between sinusoidal kHz-high voltage and current, applied on a sensor. This needs a kHz-resonance voltage generator and adapted sensors as a part of an electromagnetic shielded measurement system to determine time dependent electric conductivity with high resolution.
Copyright (c) 2015 C. Leu, S. Gossel, M. Birle, F. Reichert
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