1. What is Watts per Horsepower 3 Phase?

Definition: This calculator converts mechanical horsepower to electrical watts for 3-phase systems.

Purpose: It helps electrical engineers and technicians determine the equivalent electrical power for motor specifications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_w \) — Power in watts
• \( HP \) — Mechanical horsepower

Explanation: The conversion factor 746 watts per horsepower is a standard value based on the definition of mechanical horsepower.

3. Importance of Power Conversion

Details: Accurate conversion between mechanical and electrical power units is essential for motor selection, circuit design, and energy calculations in 3-phase systems.

4. Using the Calculator

Tips: Simply enter the horsepower value to get the equivalent power in watts. The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 746 watts per horsepower?
A: This is the standard conversion factor based on the definition of 1 horsepower = 550 foot-pounds per second = 745.7 watts (rounded to 746).

Q2: Does this apply to single-phase systems?
A: The conversion factor is the same, but 3-phase systems typically require different calculations for current and voltage.

Q3: Is efficiency accounted for in this calculation?
A: No, this is a theoretical conversion. Actual electrical input power would be higher due to motor inefficiencies.

Q4: How does this relate to 3-phase power calculations?
A: This provides the real power (watts) which is one component of the full power calculation in 3-phase systems.

Q5: What about metric horsepower?
A: Metric horsepower uses 735.5 watts. This calculator uses mechanical (imperial) horsepower.