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. 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.
Dol Starter Power Wiring Diagram
Dol starter wiring diagram 3 phase. Despite this direct connection no harm is done to the motor. 13 17 with a flying lead to be connected to overload terminal 95. The wiring of direct on line control circuit starter is following. Wiring of the direct on line dol motor starter 1 three phase supply 230volt coil see wiring diagram. Dol starter control diagram three phase. This is the.
All connection i shown with complete guide. In the above dol starter diagram. A2 14 18. Star delta y δ 3 phase motor starting method by automatic star delta starter with timer. The direct on line motor starter dol is designed to switch a single or three phase induction motor at rated voltage. All other control and power connections have to be made by the installer.
The connection of contactor can be done among relay coil supply voltage as well as thermal overload. And the normally open and normally close push button shown. The coil of the contactor is 380 vac. 1 the following links are pre fitted to the starter. Dol starter wiring diagram for three phase motor. The three phase supply is connected the mccb circuit breaker.
Three phase motor connection stardelta without timer power control diagrams. The l1 contactor is connected from normally open no to r phase using mccb. It comprises an enclosure in steel or plastic a contactor start contact link wires and stop start buttons. 1 22kw motor with a flc of 5 amps at 415volts. We connect the circuit breaker contactor and overload relay in series between electrical supply and motor as shown in below diagram. The control circuit and the power circuit.
From where we can switch off the incoming supply to the direct online starter. Three phase motor connection schematic power and control wiring installation diagrams. The 3 phase incoming supply shown l1 l2 l3. The ryb is the three phase 380 volts supply. There are two types of circuits in the dol starter diagram given above. The thermal overload is supplied as a separate item.
The dol starter connects the 3 phase voltage supply ie. The contactor connection with thermal overload relay and the motor connection with overload relay is shown. R phase y phase and b phase to the induction motor terminals. What is dol starter. To wire a 3 phase motor the first thing to wire is a circuit breaker which is disconnect and connecting point then we will get the supply from circuit breaker and connect supply to contactor or starter and then to overload relay. In the above three phase dol starter wiring diagram.
Gallery of Dol Starter Wiring Diagram 3 Phase
