1. What is Motor Absorbed Power?

Definition: This calculator determines the actual power consumed by an electric motor based on voltage, current, and power factor.

Purpose: It helps electrical engineers and technicians evaluate motor performance and energy consumption.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Absorbed power (Watts)
• \( V \) — Voltage (Volts)
• \( I \) — Current (Amperes)
• \( PF \) — Power factor (dimensionless, 0-1)

Explanation: The voltage and current are multiplied together with the power factor to get the real power consumed by the motor.

3. Importance of Power Calculation

Details: Accurate power calculation ensures proper motor sizing, energy efficiency assessment, and electrical system design.

4. Using the Calculator

Tips: Enter the voltage in volts, current in amperes, and power factor (default 0.8). Power factor must be between 0 and 1.

5. Frequently Asked Questions (FAQ)

Q1: What is power factor?
A: Power factor is the ratio of real power to apparent power, representing how effectively current is being converted into useful work.

Q2: What's a typical power factor for motors?
A: Induction motors typically have power factors between 0.7-0.9, depending on size and load conditions.

Q3: Why is absorbed power less than apparent power?
A: Because of the power factor - only part of the current does actual work, while some is reactive power.

Q4: How do I measure voltage and current?
A: Use a multimeter or clamp meter to measure these values while the motor is operating.

Q5: Does this work for three-phase motors?
A: For three-phase, you would need to multiply by √3 (1.732) in the formula.