Dol Starter Wiring Diagram

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.

Dol starter wiring diagram. The contactor connection with thermal overload relay and the motor connection with overload relay is shown. In the above three phase dol starter wiring diagram. A2 14 18. This starting current can damage the motor windings.

And if you want to learn it in image type diagram. In the above 3 phase dol starter wiring diagram all connection shown. The r y b is the three phase 380 volts supply. All connection i shown with complete guide.

The induction motor draws a huge amount of current at startup. In which the three phase induction motor connection shown and all the direct online starter wiring shown with simple steps. I checked continuity to l l l body its ok but when i started the motor in fraction of seconds the relay fused out what the reason i cant find it please tell me and suggestion me. The coil of the contactor is 380 vac.

A wiring diagram of a dol starter is shown below. In this article we will discuss dol starter direct online starter working principle and construction dol starter diagram control diagram power circuit and wiring single 3 phase starter direct on line is the simplest and cheapest method used for starting three phase motor. All other control and power connections have to be made by the installer. In order to avoid any damage we use different techniques to reduce the starting current using motor starter.

The wiring of direct on line control circuit starter is following. The connection of contactor can be done among relay coil supply voltage as well as thermal overload. Dol starter for motors direct online starter diagram working types applications. Dol starter control diagram three phase.

And the normally open and normally close push button shown. 13 17 with a flying lead to be connected to overload terminal 95. I having 2 hp motorpump by using dol starter in starter again and again relay was damaged the realy setting value is 2 7 its range is 2 5 4 0the motor we are using for chemical water draining. In the above dol starter diagram.

Then read the below article and learn from simple dol starter wiring diagram. The dol starter main terminals are connected between the mains supply terminals and motor terminals while the control circuit is energized with two terminals of three phase supply as illustrated in figure. The wiring connection of dol starter with start and stop buttons is shown in figure below. Since the dol starter connects the motor directly to the main supply line the motor draws a very high inrush current compared to the full load current of the motor up to 5 8 times higher.