Page 86 - CITS - Electrician - Trade Practical

ELECTRICIAN - CITS

6 Control the terminal voltage to approx. 250 V by decreasing the field current by manually adjusting field
rheostat.
Safety precautions:

1 Ensure proper foundation and perfect coupling of MG set, else it may cause severe injury.
2 Ensure proper direction of rotation of DC generator to avoid demagnetizing of field poles and fails to build up
voltage.

3 Do not make loose and wrong connections; check the connections before switching ON.
4 Ensure proper earthing to the MG set.
Tabular column:
Load current Terminal
Sl.No Field current (I ) Induced EMF (E ) (I ) voltage (V ) Speed (RPM)
0
F
T
L

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CITS : Power - Electrician & Wireman - Exercise 35