1. What is the Torque Equation?

The torque equation for a 3-phase induction motor calculates the rotational force produced by the motor based on its power output and rotational speed. It is a fundamental parameter in motor performance analysis.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( P \) — Power in watts (W)
• \( N \) — Speed in revolutions per minute (RPM)
• \( \pi \) — Mathematical constant pi (approximately 3.1416)

Explanation: The equation converts power and speed into torque, which represents the motor's rotational force capability.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for motor selection, system design, and ensuring proper motor performance under various load conditions.

4. Using the Calculator

Tips: Enter power in watts and speed in RPM. Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is torque in motor applications?
A: Torque is the rotational force produced by the motor that enables it to perform mechanical work and overcome load resistance.

Q2: How does speed affect torque in induction motors?
A: In induction motors, torque typically decreases as speed increases, following the motor's torque-speed characteristic curve.

Q3: What are typical torque values for industrial motors?
A: Torque values vary significantly based on motor size and design, ranging from fractional Nm for small motors to thousands of Nm for large industrial motors.

Q4: Can this calculator be used for other motor types?
A: This specific formula is generally applicable to various motor types, but different motors may have unique torque characteristics that require additional considerations.

Q5: Why is 60 used in the numerator?
A: The factor of 60 converts minutes to seconds since power is in watts (joules per second) while speed is in revolutions per minute.