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由于煤矿井下气候潮湿,故煤矿用电气设备必须具有一定的耐潮性能。目前对耐潮性能试验方法及质量标准的考核,是按1965年颁布的“煤矿用电气设备制造规程”附件一的规定进行的。1965年前,我国煤矿井下采掘机械化程度不高,防爆电气设备品种亦不多,井下采用380伏电压供电。十年来,我
As the coal mine climate is humid, so the electrical equipment used in coal mines must have some moisture resistance. At present, the testing methods and quality standards for moisture resistance are evaluated in accordance with the provisions of Annex 1 of “Rules for Manufacturing Electrical Equipment for Coal Mine” promulgated in 1965. Before 1965, China’s coal mine underground mining mechanization degree is not high, the variety of explosion-proof electrical equipment is not more than 380 volts downhole power supply. Ten years, me