This electric power calculator can help you determine the apparent power, actual power, and reactive power based on the provided input parameters. Use the calculator as follows:
Input voltage in "V".
Input current in amperes (A).
Input power factor (PF). This number should be between 0 and 1.
Select the load type: resistive, inductive, or capacitive.
Select phase configuration: single-phase or three-phase.
Click the "Calculate" button to calculate the result.
How does it calculate the result?
The power calculator calculates the following values:
Apparent power (VA): This is the product of calculated voltage and current. For a three-phase power supply, this is multiplied by the root number 3.
Actual power (w): Apparent power multiplied by power factor.
Reactive Power (VAR): It depends on the load type:
For resistive loads, the reactive power is zero.
For inductive loads, reactive power is positive, which is calculated as the square root of the difference between the square of apparent power and the square of actual power.
For a capacitive load, the reactive power is negative, and the calculation method is similar to that of an inductive load.
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This power calculator assumes load balance and ideal conditions, which may not always be the case in actual scenarios. The results are used for reference purposes and may need further verification for key applications.
The use case of this calculator
Calculate the monthly electricity consumption.
As a homeowner, you want to track your electricity consumption to manage your budget effectively. By inputting your wattage and usage time into the calculator, you can estimate your total monthly electricity consumption and help you make wise energy use choices.
Determine the cost of running equipment.t
You can easily find out how much it costs to run your favorite appliances by using a power calculator. Just enter the wattage and the local electricity price, and you can see the estimated monthly cost of each device, so that you can give priority to energy efficiency.
Evaluate the power demand for renovation.
If you are planning a home renovation, you may need to evaluate the power demand of new appliances or fixtures. A calculator can help you determine whether the current electrical system can handle the increased load and ensure that you avoid potential overload or electrical failure.
Compare the energy efficiency of electrical appliances
You are interested in upgrading your appliances, but you want to make sure they are energy-efficient. By inputting the specifications of old and new electrical appliances into the calculator, you can compare their energy consumption and operating costs, and help you make an environmentally friendly choice.
Calculate the power factor of the motor.
When dealing with motors in your business, it is very important to know the power factor for efficiency. The calculator enables you to analyze the input power, output power, and power factor, so that you can know more clearly the working efficiency of the motor under load.
Assess the battery demand of off-grid li.fe
If you are considering an off-grid lifestyle, you need to know the power requirements of all your equipment. This power calculator can help you estimate the total watt-hours you need every day and help you choose the right batteries and solar panels for your sustainable life.
Generator size plan
When buying a generator, you should make sure that it can meet your standby power demand without wasting energy. By evaluating the wattage of all your basic equipment, the calculator provides you with a suggestion on the appropriate generator size to ensure that you are prepared for a power failure.
Monitor power consumption trends.
Knowing the changes in your power consumption will help you identify areas that need improvement. Using a calculator regularly allows you to track trends over a period of time, making it easier to identify potential problems with electrical appliances that may require your attention.
Estimate the size of the solar system.m
If you are considering installing solar panels, you will want to know how many panels you need. By inputting your average energy consumption into the calculator, you can get an estimate of the size of the required solar system, which simplifies the planning process of your renewable energy solution.
Understand the load distribution of the circuit breaker
In order to maintain a safe family environment, it is essential to know the load distribution. Power calculator allows you to input fan, lighting, and socket loads to ensure that your circuit breaker is properly sized and reduce the risk of tripping or electrical hazards in your space.