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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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need info, tough reversable 3 phase switch
I am using a Dayton "drum" switch on a 3 phase application that is
constantly being reversed. It's a 1hp motor connected to a rotary table through a reduction box on a semi-auto polishing machine. Anyway, the drum switchs are coming loose inside every so often and contact is lost on 1 leg of the 3phase when the operator lets go of the handle. The noise in the area is too great for anyone to hear the buzzing of the motor running on 2 legs. 2 legs is fine for most of what they do (it's like running with a cheepie 3 phase converter) but takes it's toll over a period of time. There are 2 machines, one has the smaller Dayton drum switch and the other has the same type switch but a much larger Square D, I think, but they both have the same basic problem. Any suggestions for a tougher switch of some kind for HEAVY duty use? JohnF |
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