Abstract
Electrical conductivity of SF6 gas decays rapidly, in alternating current interrupters close to interruption, where the temperature of the gas reduces rapidly under the influence of either the thermal sinks, mixing of hot gas and cold gas, or by both mechanisms. In all conditions, the reduction in the gas temperature is responsible, to a great extent, for the decay in electrical conductivity of the gas. Data for the hot gas conductivity covering temperatures below 3000K needs investigation to help the numerical analysis, carried out around these temperatures for applications like, arc-circuit interaction. The paper presents a simple experimental approach for generating this important data by simulating the conditions of an interrupter in the laboratory, utilising a new conductivity probe.
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