文档介绍：QBZ-2×□/□SF煤矿风机用隔爆型双电源真空电磁起动器使用说明书山东科源电气有限公司Ke Yu a nEl e c t r i c a lCo . L t d .目录一、概述·················································································································-1-二、主要功能及特点··································································································-1-三、用途和适用范围··································································································-1-四、结构·················································································································-4-五、工作原理············································