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 calculate the real power consumption of motors for energy management and 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 to 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 analysis, and cost estimation.

4. Using the Calculator

Tips: Enter the voltage in volts, current in amperes, and power factor (default 0.8). All values must be > 0, with PF 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: Induction motors typically have 0.8-0.9 PF at full load, but this varies with motor type and load conditions.

Q3: Why not just multiply V × I?
A: V × I gives apparent power (VA), but absorbed power (real power in Watts) requires the power factor correction.

Q4: How do I measure current and voltage?
A: Use a clamp meter for current and a voltmeter for voltage measurements on the motor's power supply.

Q5: Does this include motor efficiency?
A: No, this calculates electrical input power. Mechanical output power would require knowing the motor's efficiency.