POWER FACTOR
When
AC voltage used to an inductive load, the current lags the voltage by an angle
Cosine of that angle will give P.F.
P. F. = cos
Other ways of calculating P. F. =
IMPROVING POWER FACTOR – In industries capacitor is used.
- In major S / Stations synchronous condenser
is used.
For 110 V DC control supply, a transformer 250 / 84 V AC is
used.
Reason for that is in AC RMS value = Peak value : Peak
value = 84 × 2.
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