1. What is a 3 Phase Motor HP to kW Calculator?

Definition: This calculator converts motor horsepower (HP) to kilowatts (kW) for three-phase electrical systems.

Purpose: It helps electrical engineers, technicians, and maintenance personnel quickly convert between these common power units.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{kW} \) — Power in kilowatts
• \( HP \) — Horsepower
• 0.746 — Conversion factor (1 HP = 0.746 kW)

Explanation: The formula provides a direct conversion between mechanical horsepower and electrical kilowatts.

3. Importance of HP to kW Conversion

Details: Accurate conversion is essential for motor sizing, electrical system design, and energy consumption calculations.

4. Using the Calculator

Tips: Simply enter the motor horsepower value. The calculator will automatically compute the equivalent power in kilowatts.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 0.746?
A: This comes from the definition of horsepower (1 HP = 550 ft-lb/s) converted to watts (745.7 W), rounded to 0.746 kW.

Q2: Does this work for single-phase motors?
A: Yes, the conversion is the same regardless of phase, but three-phase motors are more common in industrial applications.

Q3: How accurate is this conversion?
A: The conversion is theoretically exact, though real-world motor efficiencies may affect actual power requirements.

Q4: What about motor efficiency and power factor?
A: This calculates theoretical power conversion. Actual electrical input power would be higher due to efficiency losses.

Q5: Can I convert kW back to HP?
A: Yes, divide kW by 0.746 to get HP (or multiply by 1.341 for approximate conversion).