Here you have the possibility to calculate the cos φ, the active power, and the apparent power
of e.g.,three-phase motors.

cos φ = P / S
cos φ
cos φ has to be between -1 and 1 sein!
Power: P
Apparent Power: S
Please fill all mandatory inputs.

For Example:

A 4.0 kW three-phase motor (or 400V electric motor) has a cos phi of 0.85.
What apparent power results from these specifications?

cos φ = P / S
S = P / cos φ
S = 4.0kW / 0.85
S = 4.706 kVA

Measuring Units:

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



Zur Produktseite "Drehstrommotoren"
To the product page "three-phase motors"