煤(mei)(mei)(mei)電(dian)鉆適(shi)用(yong)于煤(mei)(mei)(mei)礦井下(xia)及(ji)周圍介質(zhi)中(zhong)(zhong)有甲(jia)烷、煤(mei)(mei)(mei)塵等爆炸性混合氣體的環境中(zhong)(zhong),在(zai)交(jiao)流50Hz,電(dian)壓為127V的供電(dian)網(wang)絡中(zhong)(zhong),在(zai)回采及(ji)掘(jue)進工作面對中(zhong)(zhong)硬和(he)硬煤(mei)(mei)(mei)層鉆眼之用(yong)。
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