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.
What Is Dol Starter Direct Online Starter Wiring And Working
Dol connection for 3 phase motor. In the below dol starter wiring diagram i shown a molded case circuit breaker a magnetic contactor normally open push button normally close push button switch thermal overload relay motor trip indicator and 3 phase motor. I dol starter wiring connection with start and stop buttons are shown in the above figure 1. An example of the terminal arrangement for a single phase motor is shown below. I am facing problem of operation of dol starter 3 phase 3 hp motor through plc. The wiring connection of dol starter with start and stop buttons is shown in figure below. The dol starter joints the 3 phase main wiring with the induction motor namely l1 l2 and l3 when the start switch is pressed.
The dol starter main terminals are connected between the mains supply terminals and motor terminals while the control circuit is energized with two terminals of three phase supply as illustrated in figure. In which the three phase induction motor connection shown and all the direct online starter wiring shown with simple steps. I have 24vdc coil 5 amp resistive load on 8 qty connected to my plc card this is smoke extraction system and there are five zone with five different plc installed each zone has eight 3hp fans working in primary and secondary configuration. Then read the below article and learn from simple dol starter wiring diagram. Working of dol starter. What is dol starter.
All connection i shown with complete guide. Despite this direct connection no harm is done to the motor. 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. This is the. This is because the overloads have phase loss protection so expect to see similar current flowing in all three poles. The normally closed connection of this relay is connected to stop switch as well as the mutual connection of start or stop switch.
The method of connection is similar to that of a 3 phase except that for the motor overload to function properly all three poles must be populated. In the above three phase dol starter wiring diagram. 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. And if you want to learn it in image type diagram. The 3 phase dol starter wiring diagram is shown below. A direct on line dol or across the line starter applies the full line voltage to the motor terminals the starters or cubicle locations can usually be found on an elo drawing.
In the above 3 phase dol starter wiring diagram all connection shown.
Gallery of Dol Connection For 3 Phase Motor
