22-12-2012, 03:24 PM
LOAD TEST ON D.C. COMPOUND GENERATOR
LOAD TEST ON D.C. COMPOUND GENERATOR.docx (Size: 13.97 KB / Downloads: 25)
PROCEDURE
The connections are made as per the circuit diagram.
The DPST switch is closed.
The motor is started using four point starter.
The field rheostat of the motor is adjusted to bring the motor speed to the rated speed of the generator.
The generator field rheostat is adjusted till the voltmeter reads the rated voltage of the generator.
DPST switch on the generator side is closed.
The load is increased in steps.
At each step of loading all the meter readings are noted.
The above procedure is repeated till the ammeter reads the rated current.
Switch off the load gradually and make the motor and generator rheostat resistance position instructed in the precaution.
Turn off the supply
Interchange the terminal connection of the generator series field coil and repeat the procedure right from the first step.
PRECAUTION
All the switches should be kept open.
The field rheostat of the motor should be kept at minimum resistance position.
The field rheostat of the generator should be kept at maximum resistance position.
The connections are made as per the circuit diagram.
The DPST switch is closed.
The motor is started using four point starter.
The field rheostat of the motor is adjusted to bring the motor speed to the rated speed of the generator.
The generator field rheostat is adjusted till the voltmeter reads the rated voltage of the generator.
DPST switch on the generator side is closed. The load is increased in steps.
At each step of loading all the meter readings are noted.
The above procedure is repeated till the ammeter reads the rated current.
Switch off the load gradually and make the motor and generator rheostat resistance position instructed in the precaution.
Turn off the supply
Interchange the terminal connection of the generator series field coil and repeat the procedure right from the first step.
PRECAUTION
All the switches should be kept open.
The field rheostat of the motor should be kept at minimum resistance position.
The field rheostat of the generator should be kept at maximum resistance position.