When we press the start button to start the motor the relay gets the phase and circuit completed thus coil energizes and contactors produce magnetic field the main contactor closes and motor gets the supply and the motor startswhen we press the stop button the circuit will interrupt and the motor stop. The 3 phase incoming supply shown l1 l2 l3.
Dol Starter Direct Online Starter Diagram Construction
Dol starter connection diagram. The dol starter joints the 3 phase main wiring with the induction motor namely l1 l2 and l3 when the start switch is pressed. How dol starter control diagram works. During normal condition it acts as a switch. Despite this direct connection no harm is done to the motor. The main heart of dol starter is relay coil. From where we can switch off the incoming supply to the direct online starter.
Direct on line starter wiring diagram. Wiring diagram of dol starter. Normally it gets one phase constant from incoming supply voltage a1when. Working principle of dol starter. Dol direct online starter. The 3 phase dol starter wiring diagram is shown below.
Nc connection 95 96 of thermal overload relay is connecting to stop button and common connection of startstop button. The three phase supply is connected the mccb circuit breaker. In the above 3 phase dol starter wiring diagram all connection shown. All connection i shown with complete guide. The l1 contactor is connected from normally open no to r phase using mccb. Water pump controller with float switch duration.
The connection of contactor can be done among relay coil supply voltage as well as thermal overload. From the mccb the 3 phase supply goes to the contactor main. In order to avoid direct switching dol starters are implemented. The normally closed connection of this relay is connected to stop switch as well as the mutual connection of start or stop switch. In the above three phase dol starter wiring diagram. What is dol starter.
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. Dol starter control diagram three phase. And if you want to learn it in image type diagram. Then read the below article and learn from simple dol starter wiring diagram. 3 phase dol starter control and power wiring diagram. Capacitor connection diagram of ceiling fan video.
The wiring of direct on line control circuit starter is following. In which the three phase induction motor connection shown and all the direct online starter wiring shown with simple steps. A direct on line dol or across the line starter is an electrical device used to apply a full three phase line voltage to the electrical motor terminals.
Gallery of Dol Starter Connection Diagram
