Power Circuit Diagram Of Dol Starter

The circuit breaker is used for protection against short circuits while the overload relay protects the motor from overloading.

Power circuit diagram of dol starter. 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. Between the mains supply terminals and motor terminals the dol starter main terminals are connected and with the two terminals of the three phase power supply as described in figure 1 the control circuit is energized. I dol starter wiring connection with start and stop buttons are shown in the above figure 1. Dol wiring scheme motor starting characteristics on dol starter.

Three phase dol starter wiring diagram with mccb. 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. Wiring of the direct on line dol motor starter 1 three phase supply 230volt coil see wiring diagram. A2 14 18.

The dol starter joints the 3 phase main wiring with the induction motor namely l1 l2 and l3 when the start switch is pressed. 13 17 with a flying lead to be connected to overload terminal 95. All controlling of starter are controlled by this circuit. The dol starter is made of a circuit breaker or mccb or fuse an overload relay and contactor or coil.

The contactor is used for starting and stopping the motor where the green and red buttons are connected. All other control and power connections have to be made by the installer. What is dol starter. 1 the following links are pre fitted to the starter.

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 3 phase dol starter wiring diagram is shown below. Pdl 56 series full load current overload selection d o l. 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.

Despite this direct connection no harm is done to the motor.