Power And Control Diagram Of Dol Starter

In this tutorial we will show the star delta y δ 3 phase induction ac motor starting method by automatic star delta starter with timer with schematic power control and wiring diagram as well as how star delta starter works and their applications with advantages and disadvantages.

Power and control diagram of dol starter. Automatic star delta starter with timer for 3 phase ac motors. The dol starter joints the 3 phase main wiring with the induction motor namely l1 l2 and l3 when the start switch is pressed. A2 14 18. Dol starter control diagram.

In this post we are going to know the details of each part of dol starter diagram all parts of the dol starter power circuit diagram and control circuit diagram are explained direct online starter or dol starter is very useful and commonly used ac starter dol starters are mainly used with up to 5 h p motors. 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. The 3 phase dol starter wiring diagram is shown below. When we push stop button control circuit of starter will be break at stop button and supply of relay coil is broken plunger moves and close contact of main contactor becomes open supply of motor is disconnected.

The l1 contactor is connected from normally open no to r phase using mccb. A dol starter or direct on line starter or across the line starter is a method of starting of a 3 phase induction motor in 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. Generally the direct online starter working can be done in two different stages namely dol starter control circuit and dol starter power circuit. Despite this direct connection no harm is done to the motor.

All other control and power connections have to be made by the installer. The connection of contactor can be done among relay coil supply voltage as well as thermal overload. What is dol starter. 13 17 with a flying lead to be connected to overload terminal 95.

Thus there is no need to reduce the applied voltage to control the starting current. The control circuit. Dol staretrs are used in case of small rating motors having less than 05hp motors. Wiring of the direct on line dol motor starter 1 three phase supply 230volt coil see wiring diagram.

All controlling of starter are controlled by this circuit. 1 the following links are pre fitted to the starter. There are two types of circuits in the dol starter diagram given above. Dol wiring scheme motor starting characteristics on dol starter.

The control circuit and the power circuit. Dol starter control circuit diagram consist components like main power contactor start button stop push button and overload relay is connected in series this circuit is called control circuit of dol motor starter. Dol starter control diagram three phase.