Calcula Torque De Un Motor Trifasico

Torque Formula:

\[ T = \frac{3 \times V \times I \times PF \times eff \times 60}{2 \times \pi \times RPM} \]

Voltage (V):

Current (I):

Power Factor (PF):

dimensionless

Efficiency (eff):

dimensionless

RPM:

rev/min

Torque (T):

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1. What is the 3-Phase Motor Torque Formula?

The 3-phase motor torque formula calculates the torque output of a three-phase motor based on electrical input parameters and motor characteristics. It provides an accurate assessment of motor performance under specific operating conditions.

2. How Does the Calculator Work?

The calculator uses the torque formula:

\[ T = \frac{3 \times V \times I \times PF \times eff \times 60}{2 \times \pi \times RPM} \]

Where:

\( T \) — Torque (Nm)
\( V \) — Voltage (V)
\( I \) — Current (A)
\( PF \) — Power Factor (dimensionless)
\( eff \) — Efficiency (dimensionless)
\( RPM \) — Rotational Speed (rev/min)

Explanation: The formula accounts for the electrical power input, power factor, motor efficiency, and rotational speed to determine the mechanical torque output.

3. Importance of Torque Calculation

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

4. Using the Calculator

Tips: Enter voltage in volts, current in amperes, power factor and efficiency as decimal values between 0-1, and RPM in revolutions per minute. All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: Why is power factor included in the torque calculation?
A: Power factor accounts for the phase difference between voltage and current, representing the actual power available for useful work.

Q2: What is a typical efficiency range for 3-phase motors?
A: Efficiency typically ranges from 0.85 to 0.95 (85-95%) for most industrial 3-phase motors, depending on size and design.

Q3: How does RPM affect torque output?
A: Torque is inversely proportional to RPM - higher RPM generally results in lower torque for the same power input, and vice versa.

Q4: Are there limitations to this formula?
A: This formula provides theoretical torque and may vary slightly from actual torque due to motor design characteristics, temperature effects, and operating conditions.

Q5: Can this formula be used for single-phase motors?
A: No, this formula is specifically designed for 3-phase motors. Single-phase motors require different calculations due to their operating principles.