# How to calculate power motor value in kW to HP?

:1: There is an electric motor that used to drive water pump machine. The electric motor has specification: voltage 220 Volt single phase, frequency 50 Hz, current 9 Ampere and power 1.2 kW. How many

**horse power or HP**power of electricity that used the motor?

:catat: Answer:

V = 220 Volt

f = 50 Hz

I = 9 A

P = 1.2 kW

P = ...? HP

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**The conversion formula of kW to HP**

1 kW = 1/ 0.746 HP

1 kW = 1/ 0.746 HP

=====================================

P = 1.2 / 0.746 HP

P = 1.61 HP.

:2: In the workshop has an electric motor that has specification: voltage 200 Volt single phase, frequency 60 Hz, and power 2.5 HP. How many

**kilo Watt**power of electricity that used the motor?

:catat: Answer:

V = 200 Volt

f = 60 Hz

P = 2.5 HP

P = ...? kW

====================================

**The conversion formula of HP to kW**

1 HP = 0.746 kW

1 HP = 0.746 kW

=====================================

P = 2.5 * 0.746 kW

P = 1.865 kW.

:3: The electric motor has specification: voltage 400 Volt single phase, frequency 70 Hz, current 8.5 Ampere and cos phi 0.75. How many

**horse power or HP**power of electricity that used the motor?

:catat: Answer:

V = 400 Volt

f = 70 Hz

I = 8.5 A

Cos phi = 0.75

P = ...? HP

P = V I Cos phi

P = 400 * 8.5 * 0.75

P = 2550 Watt

P = 2.55 kW

P = 3.418 HP.

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