1. What is Torque in Induction Motors?

Torque is the rotational force produced by an induction motor. It's a crucial parameter that determines the motor's ability to perform work and overcome mechanical resistance.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( P \) — Power in kilowatts (kW)
• \( RPM \) — Rotational speed in revolutions per minute
• 9550 — Conversion factor (derived from 60,000/(2π))

Explanation: The formula relates the motor's power output to its rotational speed, showing that torque decreases as speed increases for a given power.

3. Importance of Torque Calculation

Details: Calculating torque is essential for motor selection, ensuring the motor can provide enough rotational force for the application, and for system design to prevent mechanical overload.

4. Using the Calculator

Tips: Enter power in kW and rotational speed in RPM. Both values must be positive numbers. The calculator will compute the torque in Newton-meters (N·m).

5. Frequently Asked Questions (FAQ)

Q1: Why is 9550 used in the formula?
A: 9550 is the conversion factor derived from (60,000)/(2π) to convert power in kW and speed in RPM to torque in N·m.

Q2: What is typical torque for induction motors?
A: Torque varies greatly by motor size and design, but common industrial motors might produce 10-1000 N·m depending on their power rating.

Q3: How does torque relate to motor performance?
A: Torque determines the motor's ability to start under load (starting torque) and maintain speed under varying loads (breakdown torque).

Q4: What affects torque in induction motors?
A: Torque depends on motor design, power supply voltage and frequency, rotor resistance, and slip (difference between synchronous and actual speed).

Q5: Can this formula be used for all motors?
A: This formula works for any rotating machinery, but specific motor types may have different torque-speed characteristics.