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Answer Posted / thowsif_emerson_csm team
When the need arises to correct for poor power factor in an
AC power system, you probably won't have the luxury of
knowing the load's exact inductance in henrys to use for
your calculations. You may be fortunate enough to have an
instrument called a power factor meter to tell you what the
power factor is (a number between 0 and 1), and the
apparent power (which can be figured by taking a voltmeter
reading in volts and multiplying by an ammeter reading in
amps). In less favorable circumstances you may have to use
an oscilloscope to compare voltage and current waveforms,
measuring phase shift in degrees and calculating power
factor by the cosine of that phase shift.
Hi more details Pls go through the following links:-
http://www.elec-toolbox.com/usefulinfo/pfcorrection.htm
http://www.pfc-engineering.com/
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