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 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 to 1)

Explanation: The product of voltage and current gives apparent power, which is then multiplied by the power factor to get real power.

3. Importance of Absorbed Power Calculation

Details: Knowing absorbed power helps in sizing electrical systems, calculating energy costs, and assessing motor efficiency.

4. Using the Calculator

Tips: Enter the voltage in volts, current in amps, 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 value?
A: For AC induction motors, power factor typically ranges from 0.7 to 0.9 depending on load and motor design.

Q3: Why is my motor's absorbed power less than V×I?
A: Because of power factor - only a portion of the apparent power (V×I) is converted to real, usable power.

Q4: How do I measure voltage and current?
A: Use a multimeter or clamp meter to measure voltage across and current through the motor terminals.

Q5: Does this work for both AC and DC motors?
A: For DC motors, power factor is 1 (omit it from calculation). For AC motors, power factor must be considered.