Home
Back
Electric Horsepower Formula:
| From: | To: |
Electric horsepower is a measure of the mechanical power output of an electric motor. It represents the rate at which work is done and is calculated based on electrical input parameters and motor efficiency.
The calculator uses the electric horsepower formula:
Where:
Explanation: The formula calculates the mechanical power output by multiplying voltage and current to get electrical power input, then multiplying by efficiency to get mechanical power output, and finally converting from watts to horsepower.
Details: Accurate horsepower calculation is crucial for motor selection, system design, energy efficiency analysis, and proper equipment sizing in electrical applications.
Tips: Enter voltage in volts, current in amps, and efficiency as a percentage (0-100%). All values must be valid positive numbers with efficiency between 0-100%.
Q1: Why is 746 used in the formula?
A: 746 watts equals 1 horsepower, so this conversion factor is used to convert from watts to horsepower.
Q2: What is typical motor efficiency?
A: Electric motor efficiency typically ranges from 70% to 95%, depending on motor type, size, and design.
Q3: How does this differ from mechanical horsepower?
A: Electric horsepower specifically calculates the output power of electric motors, while mechanical horsepower can refer to various power sources. The calculation methods differ based on the input parameters.
Q4: Can this formula be used for AC and DC motors?
A: For DC motors, this formula works directly. For AC motors, power factor should be considered for accurate calculations.
Q5: What are common applications of this calculation?
A: This calculation is used in motor selection, industrial equipment design, automotive applications (electric vehicles), and renewable energy systems.