R phase y phase and b phase to the induction motor terminals. Sometimes known as an across the line starter this type of motor controller is used as a simple starter for larger electric motors providing.
What Is Dol Starter Direct Online Starter Wiring And Working
3 phase dol starter control wiring diagram. The control circuit and the power circuit. And one wiring is called controlling wiring. Dol starter wiring diagram for 3 phase motor main parts for making direct online starter. Wiring of the direct on line dol motor starter 1 three phase supply 230volt coil see wiring diagram. All other control and power connections have to be made by the installer. In this article we will discuss dol starter direct online starter working principle and construction dol starter diagram control diagram power circuit and wiring single 3 phase starter direct on line is the simplest and cheapest method used for starting three phase motor.
The l1 contactor is connected from normally open no to r phase using mccb. Water pump controller with float switch duration. There are two types of circuits in the dol starter diagram given above. 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. 3 phase dol starter control and power wiring diagram. What is dol starter.
1 the following links are pre fitted to the starter. The wiring of direct on line control circuit starter is following. In the above three phase dol starter wiring diagram. A2 14 18. 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. The dol starter connects the 3 phase voltage supply ie.
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. Despite this direct connection no harm is done to the motor. The connection of contactor can be done among relay coil supply voltage as well as thermal overload. Single phase electricity explained wiring diagram energy meter duration. Mccb 3 pole circuit breaker a magnetic contactor over current motor protection relay nc and no push button switch electric wires for main wiring and control wiring in the below diagram the mccb is not shown the three phase supply comes from mccb circuit. Dol starter control diagram three phase.
A dol starter is a direct on line motor starter. In the 3 phase motor forward reverse starter wiring diagram. 13 17 with a flying lead to be connected to overload terminal 95.
