1. What is Full Load Torque?

Full load torque is the torque produced by a motor when operating at its rated power and speed. It represents the maximum continuous torque the motor can deliver without overheating.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque in Newton-meters (Nm)
• \( P \) — Power in kilowatts (kW)
• \( N \) — Speed in revolutions per minute (RPM)
• 9550 — Conversion factor (derived from 60,000/(2π))

Explanation: The formula relates the motor's mechanical power output to its rotational speed, with the constant 9550 converting units appropriately.

3. Importance of Torque Calculation

Details: Knowing a motor's full load torque is essential for proper motor selection, ensuring it can handle the mechanical load requirements of the application.

4. Using the Calculator

Tips: Enter the motor's rated power in kW and its rated speed in RPM. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is 9550 used in the formula?
A: It's a conversion factor that accounts for unit transformations (kW to W, minutes to seconds, and radians to revolutions).

Q2: What's the difference between starting torque and full load torque?
A: Starting torque is the torque when the motor begins to rotate (at zero speed), while full load torque is at rated speed and power.

Q3: How does torque relate to motor size?
A: Generally, higher torque requirements need larger motors, but gearboxes can be used to increase torque at reduced speed.

Q4: Can this formula be used for all motor types?
A: It works for most AC and DC motors operating at full load, but actual torque may vary with motor design and operating conditions.

Q5: How does voltage affect torque?
A: For AC induction motors, torque is proportional to the square of the voltage. Voltage drops significantly reduce available torque.