Sensational Starter Control Circuit

In this particular case i show a low voltage control circuit and a 3 phase higher voltage motor.

Starter control circuit. Continuous motor operation with a momentary start switch is possible if a normally open seal in contact from the contactor is connected in parallel with the start switch so that once the contactor is energized it maintains power to itself and keeps itself latched on. As shown in the fig. Starter control circuit using an insulated side relay to control current to the starter solenoid.

To check whether there is high resistance in the wiring on the earth side of the circuit connect the positive lead of the voltmeter to the negative earthed terminal of the battery and the negative lead to the body of the starter. Dosto aaj ki is video me aap dekheenge star delta starter control circuit diagram or kaise kaam karta hai stardeltastartercircuit subscribe yk electrical fo. In a system that uses the ignition switch to control the relay the switch will usually be installed on the insulated side of the relay control circuit.

An overload marked this way indicates that the circuit is correct for any motor or starter used. Star delta starter control circuit consist of start push button s1 stop push button s0 timer t1 main contactor k1 star contactor k3 delta contactor k4. The working principle of a dol starter begins with the connection to the 3 phase main with the motor.

When the ignition switch is turned to the start position battery voltage is applied to the coil of the relay. Then a thermal overload relay is connected for the protection purpose. With the contacts closed battery.

Operating coils of contactors and starters are activated by control devices such as pushbuttons limit switches and pressure switches. The electrician knows to connect all the nc overload contacts that the starter is designed for in series if there is more than one on the starter. Since the relay coil is grounded the coil is energized and pulls the contacts closed.

Control devices are connected between l1 and the operating coil or load. Motor starter control basics what is a motor starter. First a main switch or mcb or mccb is connected to give the power supply to the circuit.