There are two types of circuits in the DOL starter diagram given above; The control circuit and the power circuit. The Control Circuit : It is powered by only 2 phases of the power supply and it is responsible for starting and stopping the power supplied to the motor.. In three phase dol starter wiring, the two types of wiring done. One wiring called main wiring which is used for motor. And one wiring is called controlling wiring. In the below dol starter wiring diagram, I shown a molded case circuit breaker, a magnetic contactor, Normally open push button, normally close push button switch, thermal overload.
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Diagram Components: The DOL starter wiring diagram includes a circuit breaker, contactor, and overload relay, essential for motor protection and operation. Working Principle: The starter directly connects the motor to a three-phase supply, utilizing a control circuit energized from two phases to manage start and stop functions.. Control Circuit (Wiring Diagram) of DOL Starter using Relays. Fig. 2: Control Circuit of DOL Starter. In many industries, DOL staffer (or) direct motor staffer is used to staff A.C motors. The DOL is mainly made up of a 3-phase contactor and an overload relay. The control circuit of DOL starter is shown in above figure (2).
