# How to calculate power motor value in single phase motor?

:1: We have an electric motor that used to drive fan machine. The electric motor has specification: voltage 220 Volt single phase, frequency 50 Hz, current 0.5 Ampere and cos phi 0.6. How many power of electric that used the motor?

:catat: Answer:

V = 220 Volt

f = 50 Hz

I = 0.5 A

Cos phi = 0.6

P = ... ?

P = V I Cos phi

P = 220 * 0.5 * 0.6

P = 66 Watt.

:2: The electric motor has specification: voltage 110 Volt single phase, frequency 60 Hz, current 3.3 Ampere and cos phi 0.75. How many power of electric that used the motor?

:catat: Answer:

V = 110 Volt

f = 60 Hz

I = 3.3 A

Cos phi = 0.75

P = ... ?

P = V I Cos phi

P = 110 * 3.3 * 0.75

P = 272.25 Watt.

:3: The electric motor has specification: voltage 400 Volt single phase, frequency 70 Hz, current 10 Ampere and cos phi 0.65. How many kilo Watt power of electric that used the motor?

:catat: Answer:

V = 400 Volt

f = 70 Hz

I = 10 A

Cos phi = 0.65

P = ... ?

P = V I Cos phi

P = 400 * 10 * 0.65

P = 2600 Watt

P = 2.6 kW.

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