What is Power Factor Correction ?
Power factor is the relationship between working (active) power
A distribution systems operating power is composed of two parts:
The ACTIVE power performs the useful work. The REACTIVE power does not as its only function is to develop magnetic fields required by inductive devices.
Generally, power factor decreases (Ø increases) with
CosØ = p.f. = kW / kVA
Why Improve Low Power Factor?
Low power factor means poor electrical efficiency. The lower
When low power factor is not corrected, the utility must provide
The following diagram illustrates the relationship of power factor to total current consumed. With a power factor of 1.0, given a constant consumed power load, the 100% figure represents the required useful current.
As the power factor drops from 1.0 to .9, power is used less
A power factor of .7 requires approximately 43% more current;
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