Dol Starter Control Diagram Three Phase

Three phase motor connection schematic power and control wiring installation diagrams.

Dol starter control diagram three phase. 1 the following links are pre fitted to the starter. The r y b is the three phase 380 volts supply. The coil of the contactor is 380 vac.

In a dol starter an induction motor is connected directly across its 3 phase supply and the dol starter applies the full line voltage to the motor terminals. 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 relay motor trip indicator and 3 phase motor. The dol starter connects the 3 phase voltage supply i e.

13 17 with a flying lead to be connected to overload terminal 95. To wire a 3 phase motor the first thing to wire is a circuit breaker which is a disconnect and connecting point then we will get the supply from the circuit breaker and connect the supply to the contactor or starter and then to the overload relay. The control wiring will be as that for the 240vac coil version of the 3 phase system.

Three phase motor connection star delta without timer power control diagrams. R phase y phase and b phase to the induction motor terminals. Three phase dol starter control and power wiring diagram reverse forward with limit switch reverse forward dol starter power and control wiring wiring of rev.

Also the earth connection is provided to the motor. A dol starter also known as a direct on line starter or across the line starter is a method of starting a 3 phase induction motor. The contactor connection with thermal overload relay and the motor connection with overload relay is shown.

And the normally open and normally close push button shown. All other control and power connections have to be made by the installer. Despite this direct connection no harm is done to the motor.