Dol Starter Wiring Diagram 3 Phase

The contactor connection with thermal overload relay and the motor connection with overload relay is shown.

Dol starter wiring diagram 3 phase. Dol starter wiring diagram for three phase motor to wire a 3 phase motor the first thing to wire is a circuit breaker which is disconnect and connecting point then we will get the supply from circuit breaker and connect supply to contactor or starter and then to overload relay. As you can see in the above picture the 3phase voltage is apply to mccb q1 it is a short circuit protection device. 13 17 with a flying lead to be connected to overload terminal 95. Then read the below article and learn from simple dol starter wiring diagram.

All other control and power connections have to be made by the installer. Power wiring diagram of a dol starter direct on line starter if you unable to understand above drawing read below step by step to understand the power diagram of dol starter. 1 the following links are pre fitted to the starter. We have to use all 3 poles of the overload relay otherwise the imbalance due to the current flow in only 2 of them will cause unnecessary tripping.

What is dol starter. A2 14 18. To use three phase electricity a motor needs windings spaced 120 degrees apart. Single phase dol starter wiring diagram.

Wiring of the direct on line dol motor starter 1 three phase supply 230volt coil see wiring diagram. 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. Direct on line starter wiring diagram. Working principle of dol starter.

Normally it gets one phase constant from incoming supply voltage a1 when coil gets second phase relay coil energizes and magnet of contactor produce electromagnetic field and due to this plunger of contactor will move and. A single phase dol motor starter can be designed using the same components as shown in following diagram. The main heart of dol starter is relay coil. Wiring of the direct on line dol motor starter 1 three phase supply 230volt coil see wiring diagram.

The coil of the contactor is 380 vac. And the normally open and normally close push button shown. The r y b is the three phase 380 volts supply. In the above dol starter diagram.