1. What is Electric Motor Torque?

Torque is the rotational force produced by an electric motor. It represents the motor's ability to perform work and is a crucial parameter in motor selection and application design.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Newton-meters)
• \( P \) — Power (kilowatts)
• \( N \) — Rotational speed (revolutions per minute)
• 9550 — Conversion factor (derived from unit conversions)

Explanation: This formula calculates the torque output of an electric motor based on its power rating and rotational speed.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for proper motor selection, ensuring the motor can handle the required mechanical load and operate efficiently in various applications.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and rotational speed in revolutions per minute (rpm). Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of the 9550 constant?
A: The constant 9550 is derived from unit conversions (60 seconds/minute ÷ 2π radians/revolution × 1000 watts/kilowatt).

Q2: Can this formula be used for all types of electric motors?
A: Yes, this formula applies to most AC and DC electric motors when operating at constant speed and load conditions.

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

Q4: How does torque relate to motor performance?
A: Torque determines the motor's ability to accelerate loads, overcome friction, and maintain operation under varying load conditions.

Q5: What factors affect motor torque output?
A: Motor design, voltage supply, current, magnetic field strength, and efficiency all influence the actual torque output of an electric motor.