why the pressure coil is not present in the three phase
wattmeter?



why the pressure coil is not present in the three phase wattmeter?..

Answer / k.prakashchandra

Witout voltage input ,you can not measure watts.In EM
meter, the connections to pressure coils are made inside
the meter.In case of electronic meter, there are voltage
sensors (divider) instead of coils.

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