Schematic Diagram Of Direct Online Starter

Green and red or start and stop buttons control the contacts.

Schematic diagram of direct online starter.
Direct on line starter direct on line starter method is a common method of starting of cage induction motor.
The wiring diagram for a dol stater is shown below.
Schematic and circuit diagram.

Dol starter wiring diagram for 3 phase motor main parts for making direct online starter.
The motor is connected through a starter across the full supply voltage.
Direct online starter dol control circuit diagram dol starter control circuit diagram consist components like main power contactor start button stop push button and overload relay is connected in series this circuit is called control circuit of dol motor starte r.

Electromagnetic contactor which can be opened by the thermal overload relay under fault conditions.
The simplest form of motor starter for the induction motor is the direct on line starter.
A complete direct online starter dol starter diagram with motor and control wiring.

This post is about the dol starter diagram.
The direct on line motor starter dol consist a mccb or circuit breaker contactor and an overload relay for protection.
The dol starter comprises of an mccb or circuit breaker contactor and an overload relay for protection.

Direct online starter or dol starter is very useful and commonly used ac starter.
A direct online starter consits of two buttons a green button for starting and a red for stopping purpose of the motor.
All parts of the dol starter power circuit diagram and control circuit diagram are explained.

It consists a coil operated contactor c controlled by start and stop push button as shown in the connection diagram below.
The direct on line starter usually consists of a contactor circuit breaker and an overload relay for protection against any damage.
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 breaker.

Three phase and single phase.
The direct on line starter method figure is shown below.
In the direct online starter animation diagram a 3 phase 440 volts supply is shown which is connect to the magnetic contactor main contacts.

Direct on line starter.
Direct on line starter is the simplest kind of starter that connects the motor directly to the power supply through a three phase contactor.
These two buttons ie.

From the blue wire a wire goes to the thermal overload relay normally close contacts and from there the wire goes to the contactor coil a1 terminal.
Dol starters are mainly used with up to 5 hp motors.