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Motor Power Formula:
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Motor rated power refers to the maximum power output that an electric motor can deliver continuously without overheating or damage. It represents the motor's capacity to perform work under normal operating conditions.
The calculator uses the motor power formula:
Where:
Explanation: The formula calculates the actual mechanical power output by accounting for electrical input power and motor efficiency losses.
Details: Accurate motor power calculation is essential for proper motor selection, energy efficiency analysis, electrical system design, and ensuring motors operate within their rated capacity to prevent damage and optimize performance.
Tips: Enter voltage in volts, current in amps, power factor as a decimal (0-1), and efficiency as a percentage. All values must be positive numbers within reasonable ranges for accurate results.
Q1: What is power factor and why is it important?
A: Power factor measures how effectively electrical power is converted into useful work output. Low power factor indicates poor electrical efficiency and may require power factor correction.
Q2: How does motor efficiency affect power calculation?
A: Efficiency represents the percentage of electrical input power converted to mechanical output power. Higher efficiency means less energy loss as heat.
Q3: What is the difference between input power and output power?
A: Input power is the electrical power consumed (V × I), while output power is the mechanical power delivered after accounting for efficiency losses.
Q4: Can this calculator be used for three-phase motors?
A: For three-phase motors, additional factors like √3 (square root of 3) must be included in the calculation for accurate results.
Q5: Where can I find motor specifications?
A: Motor specifications including voltage, current, power factor, and efficiency are typically listed on the motor nameplate or in manufacturer documentation.