Calculo De Torque De Un Motor Electrico Trifasico

Torque Equation:

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

Voltage (V):

Current (I):

Power Factor (PF):

dimensionless

Efficiency (eff):

dimensionless

RPM:

rev/min

Torque (T):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Three-Phase Electric Motor Torque Equation?

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

2. How Does the Calculator Work?

The calculator uses the torque equation:

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

Where:

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

Explanation: The equation accounts for the relationship between electrical power input and mechanical power output, considering motor efficiency and power factor.

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 dimensionless 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 calculation?
A: Power factor accounts for the phase difference between voltage and current in AC circuits, affecting the real power available for mechanical work.

Q2: What is typical efficiency range for three-phase motors?
A: Efficiency typically ranges from 0.85 to 0.95 for standard three-phase motors, with higher efficiency motors reaching up to 0.97.

Q3: How does RPM affect torque output?
A: Torque is inversely proportional to RPM for a given power input. Higher RPM results in lower torque, and vice versa.

Q4: Are there limitations to this equation?
A: This equation provides theoretical torque and may differ from actual torque due to factors like motor design, temperature, and operating conditions.

Q5: Can this be used for single-phase motors?
A: No, this equation is specifically for three-phase motors. Single-phase motors have different torque characteristics and calculation methods.