1.1.4 How is the active power factor cos φ of a 400V cast iron motor calculated?

For Example: 

A 4.0 kW three-phase motor (or 400V electric motor) has an apparent power of 4.7kVA. What active power factor cos phi results from this information? 

cos φ = P / S
cos φ = 4.0kW / 4.7kVA
cos φ = 0.851

Measuring Units:

Active Power P = Kilowatt [kW]
Apparent Power S = Kilovolt Ampere [KVA]
cos φ = no measuring unit 

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