DCR007 is composed with 2 switch key and plastic handle mounting on the side of servo motor, it is specialize in R series electric tapping machine, frequently (and in earliest use) figurative a tapping switch adopting M type in a star/angle conversion coil, which aims at solving the problem that the M-type tapping switch of an on-load tap changer (OLTC) with a neutral point which is a deadlock cannot realize star/angle conversion, thus not capable of satisfying the requirement of frequent changes of voltage by using one OLTC in coal mine areas. Our DCR007 switch is connected with servo motor, not only turn On-Off machine, also control the tapping orientation, OUT is rolling back and stop running, IN is feeding and tapping.
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