Page 90 - CITS - Electrician - Trade Practical

ELECTRICIAN - CITS

Tabular column:

Sl.No Supply Voltage (V) Starting Current (I ) Load/Running Current (I ) Speed(RPM)
S
L

TASK 3 : Start & run of DC Shunt motor
1 Make the connections of DC shunt motor with 3 point starter as per circuit diagram.
2 Ensure that there is no mechanical load on the motor (Do not start DC shunt motor with load).
3 Check the connections & connect the motor to DC power supply unit through DPST switch.
4 Start the motor by operating DC 3 point starter.

5 Record the starting & running current, voltage and speed of the motor.
6 Now apply the mechanical load gradually on the motor and check the speed of motor by tacho meter. (Note- do
not over load the motor as shunt motor is not capable to heavy load).

7 Switch OFF the supply and disconnect the motor.

73

CITS : Power - Electrician & Wireman - Exercise 37