Teaching TN TRB EE Test Series Electrical and Electronics Measurements Measurement of Power Measurement of Poly Phase Power
In case of power measurements by two wattmeter method in a balanced 3 – phase system with pure inductive load
1
Both wattmeters will indicates the same value but with opposite signs
2
Both wattmeters will indicate zero
3
Both the wattemeters will indicate the same value same sign
4
One wattmeter will indicate zero and the other will indicate same non zero value.