1. What is Single Phase HP to kW Conversion?

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

Purpose: It helps electricians, engineers, and technicians convert between mechanical and electrical 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 horsepower value is multiplied by the standard conversion factor of 0.746 to get the equivalent power in kilowatts.

3. Importance of HP to kW Conversion

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

4. Using the Calculator

Tips: Simply enter the horsepower value (must be > 0) and the calculator will provide 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), then divided by 1000 for kW.

Q2: Does this work for three-phase systems?
A: The basic HP to kW conversion is the same, but three-phase power calculations require additional factors like power factor and voltage.

Q3: How accurate is this conversion?
A: The 0.746 factor is standard, but actual motor efficiency may affect real-world power requirements.

Q4: What's the difference between HP and kW?
A: Horsepower is a mechanical power unit, while kilowatts are electrical power units. Both measure power but in different contexts.

Q5: Can I convert kW back to HP?
A: Yes, divide kW by 0.746 to get HP (1 kW ≈ 1.341 HP).