1. What is a Motor Absorbed Power Calculator?

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

Purpose: It helps engineers and technicians determine the real power draw of motors for energy efficiency analysis and electrical system design.

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

3. Importance of Absorbed Power Calculation

Details: Accurate power calculation ensures proper sizing of electrical components, energy efficiency monitoring, and cost analysis.

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 and 0.9, with 0.8 being a common default value.

Q3: Why is absorbed power less than apparent power?
A: Due to reactive power in inductive loads like motors, not all current performs useful work.

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

Q5: Does this include motor efficiency?
A: No, this calculates electrical input power. Mechanical output power would be less due to efficiency losses.