Abstract
In order to improve the accuracy of testing the arcing time of air-type switch for explosion-proof electrical use in coal mine, this paper puts forward the testing technology of coexistence characteristics of voltage and current. On the basis of analyzing the leading position of coal industry in energy structure and the situation of coal mine safety production, this paper expounds the generation mechanism and the theory of arc suppression of air-type switch used in coal mine explosion-proof electricity, and designs a test system for the arcing time of air-type switch used in coal mine explosion-proof electricity, which can effectively test the arcing time.
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