Exemplary Dol Starter Diagram Three Phase
In this post you will see the simple dol starter wiring diagram.
Dol starter diagram three phase. All other control and power connections have to be made by the installer. The contactor connection with thermal overload relay and the motor connection with overload relay is shown. A dol starter also known as a direct on line starter or across the line starter is a method of starting a 3 phase induction motor.
In the diagram you will see the three pole mccb circuit breaker molded case circuit breaker a magnetic contactor a motor over current thermal overload protection relay. Wiring of the direct on line dol motor starter 1 three phase supply 230volt coil see wiring diagram. Thanks for watching this video please subscribe this channel for more videos how do 3 phase star delta motor connection diagramhttps youtu be mlm6aywchh4.
1 the following links are pre fitted to the starter. In a 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. And nc off switch and no on switch.
A2 14 18. The dol starter connects the 3 phase voltage supply i e. We connect the circuit breaker contactor and overload relay in series between electrical supply and motor as shown in the below diagram.
Despite this direct connection no harm is done to the motor. There are two types of circuits in the dol starter diagram given above. Which is very simple to understand the complete connection.
13 17 with a flying lead to be connected to overload terminal 95. The control circuit and the power circuit. The coil of the contactor is 380 vac.