The contactor connection with thermal overload relay and the motor connection with overload relay is shown. 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.
Vb 9505 Phase Motor Control Wiring Diagram In Addition 3
Dol starter wiring diagram 3 phase. The control circuit and the power circuit. 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. In the above three phase dol starter wiring diagram. All other control and power connections have to be made by the installer. What is dol starter. 13 17 with a flying lead to be connected to overload terminal 95.
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 dol starter diagram. 1 the following links are pre fitted to the starter. The direct on line motor starter dol is designed to switch a single or three phase induction motor at rated voltage. A2 14 18. Dol starter control diagram three phase.
It comprises an enclosure in steel or plastic a contactor start contact link wires and stop start buttons. Wiring of the direct on line dol motor starter 1 three phase supply 230volt coil see wiring diagram. The ryb is the three phase 380 volts supply. From where we can switch off the incoming supply to the direct online starter. The l1 contactor is connected from normally open no to r phase using mccb. Three phase motor connection schematic power and control wiring installation diagrams.
There are two types of circuits in the dol starter diagram given above. This is the. The coil of the contactor is 380 vac. The connection of contactor can be done among relay coil supply voltage as well as thermal overload. R phase y phase and b phase to the induction motor terminals. And the normally open and normally close push button shown.
Despite this direct connection no harm is done to the motor. We connect the circuit breaker contactor and overload relay in series between electrical supply and motor as shown in below diagram. The wiring of direct on line control circuit starter is following. Dol starter wiring diagram for three phase motor. The 3 phase incoming supply shown l1 l2 l3. The dol starter connects the 3 phase voltage supply ie.
The three phase supply is connected the mccb circuit breaker. 1 22kw motor with a flc of 5 amps at 415volts. The thermal overload is supplied as a separate item. Three phase motor connection stardelta without timer power control diagrams. All connection i shown with complete guide. Star delta y δ 3 phase motor starting method by automatic star delta starter with timer.
Gallery of Dol Starter Wiring Diagram 3 Phase
