Control circuit of the reduction voltage starter

摘要

(57) Abstract Objective Conservation the starting reactor, be able to operate safely,To select the proper starting reactor and vis-a-vis the capacity of the electric motor, profitThe te it can constitute cheaply. Constitution Turning on starting command switch 2, electromagnetic connection for startingThrough the starting reactor, by energizing touching vessel 3 threeSupplying electricity to load of the phase induction motor, and the like it operates controlsru. In electromagnetic contactor 3 for starting and parallel assistance relay 8,9 andStarting reactor conservation timer 10 is provided. Assistance relayB contact breaker points 9b of 9 and halt conservation command switch 11 starting fingerIt provides in series to switch 2. Halt conservation command switch 1The preservation which has the conservation stop time of the starting reactor due to on of 1Protection timer 10 operating, after starting end, starting reactionConservation stop time of ru restarting becomes possible after the elapsing.