Load Test On A DC Shunt Generator.
Load Test On A DC Shunt Generator - The self excited DC shunt Generator is coupled to a DC motor, which acts
as prime mover. Two characteristics are more important. The internal or
total characteristic that gives the relation between the emf actually
induced in the armature and the armature current. This is of interest
mainly to the designer. The external characteristics called performance
characteristics (also voltage regulating curve) which give the relation
between the terminal voltage and load current. This curve lies below the
internal characteristics due to armature drop. This is important in
judging the suitability of a generator for a particular purpose. These
characteristics can be obtained by a load test with total field
resistance remaining fixed as the speed is to be kept constant.
Equipment
Required: All the measuring instruments associated with each experiment
are industrial grade. These instruments are housed in an elegant
cabinet as a package. Range of instruments and accessories (standard
format)
2HP Shunt machines mechanically coupled both are identical 220V 2HP 1500rpm.
3-4 point DC Starter for the above
Suitable Loading rheostats
Digital tachometer
Suitable double tube rheostat
Suitable single tube rheostat
Suitable digital Voltmeters DC
Suitable DC source –Rectifier unit.
