Motor Dol Starter Control Circuit Diagram

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

Motor dol starter control circuit diagram. What is dol 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 contactor is used for starting and stopping the motor where the green and red buttons are connected. Star delta y δ 3 phase motor starting method by automatic star delta starter with timer.

I shown the 3 pole mccb circuit breaker 2 magnetic contactor normally open normally close push button switch thermal overload relay 3 phase 4 wire system supply 3 phase motor with connection trip indicator light etc. Three phase motor connection schematic power and control wiring installation diagrams. Three phase motor connection star delta without timer power control diagrams. 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.

All other control and power connections have to be made by the installer. 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. The dol starter is made of a circuit breaker or mccb or fuse an overload relay and contactor or coil. I dol starter wiring connection with start and stop buttons are shown in the above figure 1.

1 the following links are pre fitted to the starter. Despite this direct connection no harm is done to the motor. Easy way dol starter circuit and control diagram dol direct on line self teach bd. 13 17 with a flying lead to be connected to overload terminal 95.

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. Dol wiring scheme motor starting characteristics on dol starter. Wiring of the direct on line dol motor starter 1 three phase supply 230volt coil see wiring 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.

All controlling of starter are controlled by this circuit.