Sunday, November 2, 2014
When a motor power is stated, it is always the mechanical power, shaft power i.e. NOT the input electrical power.
Variable frequency drives (VFD) are also (mostly) rated in terms of kW albeit it's wrong. Because VFD output is electrical (not mechanical). Mechanical power (i.e. motor shaft power) is always "active" power, where in electricity we also have reactive (doing nothing but losses) power. The apparent (total) power (stated in terms of ...