3 Phase Dol Starter Diagram

A dol starter or direct on line starter or across the line starter is a method of starting of a 3 phase induction motorin 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.

3 phase dol starter diagram. In the above dol starter diagram. Dol starter is more popular due to the low price. Wiring diagram auto transformer starter fresh nema motor starter. Weg wiring diagram single phase motor and 3 start stop to motors.

Wiring diagram for 3 phase dol starter fresh 3 phase motor starter. The dol starter joints the 3 phase main wiring with the induction motor namely l1 l2 and l3 when the start switch is pressed. Despite this direct connection no harm is done to the motor. The direct on line motor starter dol consist a mccb or circuit breaker contactor and an overload relay for protection.

And if you want to learn it in image type diagram. The ryb is the three phase 380 volts supply. Generally the direct online starter working can be done in two different stages namely dol starter control circuit and dol starter power circuit. I hope this three phase dol starter wiring or 3 phase motor wiring with direct online starter diagram help you.

In which the three phase induction motor connection shown and all the direct online starter wiring shown with simple steps. Dol starter connects the motor directly to supply without a reduction in supply voltage and apply full line voltage to 3 phase motorthis is the main disadvantage of dol starter. In the below diagram the mccb is not shown the three phase supply comes from mccb circuit breaker. 3 phase motor starter wiring diagram pdf collections of motor starter wiring diagram pdf image.

Dol is used for up to 5 hp motor. The contactor connection with thermal overload relay and the motor connection with overload relay is shown. Dol starter control diagram three phase. The simplest form of motor starter for the induction motor is the direct on line starter.

The connection of contactor can be done among relay coil supply voltage as well as thermal overload. The l1 contactor is connected from normally open no to r phase using mccb. And if you learn something from the diagram then also share this post. And the normally open and normally close push button shown.

Direct on line is the simplest and cheapest method used for starting three phase motor. In the above 3 phase dol starter wiring diagram all connection shown. The coil of the contactor is 380 vac. Now if you have any question then use can use the below comments section.

The wiring of direct on line control circuit starter is following.