POWER FACTOR
Power factor compares apparently power and actual power, and
is a measure of how effectively a load uses available power. This
measurement requires voltage and current measurements.
Current measurement can be done with either internal or
external current shunt mode. Power Factor is a “unitless”
measure, so the gain accuracy of the measurements does not
affect the measurement accuracy. Therefore, the existing wiring
can be used as an external current shunt without calibration.