Generator Power Chart Guide

Power Charts - What is a Power Chart?

A power chart is a graphical representation of the power output of a generator. The power chart for a generator will typically show the maximum power output of the generator at various engine speeds and the power output at a constant engine speed.

What Can a Power Chart Be Used For?

The power chart for a generator can be used to determine the maximum power output of a generator at a specific engine speed and compare the power output of different generators. By comparing the power output of other generators, it is possible to determine which generator is most suitable for a specific application.

How Do I Read a Power Chart?

To read a power chart, you first need to understand the units of measurement used. Power is typically measured in watts (W) or kilowatts (kW). Engine speed is generally measured in revolutions per minute (RPM). On the power chart provided by Just Generators, power is measured in kilowatts, and engine speed is measured in RPM.

Motor Size H/PRunning WattsWatts Req. To Start Motor

Machines & power required to run

The chart shows the power output of a generator at different RPM ranges. For example, at 1500 RPM, the generator has a maximum output of 6.5 kW and a constant output of 6.4 kW. As the RPM increases, the maximum power output increases, reaching a peak of 13.5 kW at 3000 RPM.

The power chart also provides information about the power factor of the generator. The power factor is the ratio of real power to apparent power and is typically measured as a decimal value between 0 and 1. A high power factor indicates that the generator is operating efficiently, while a low power factor means that the generator is running less efficiently.

Determining your Generator Size

Another use for a power chart is to determine the generator size needed for a specific application. For example, suppose a hospital needs a generator to power all of its critical systems during a power outage. In that case, a power chart can determine the generator size required to meet this requirement.

This can be done by adding up the power requirements of all the critical systems and selecting a generator with a power output that meets or exceeds this requirement. Power charts can also be used to compare the efficiency of different generators.

A generator with a high power factor is more efficient than a low power factor. This is because a generator with a high power factor can deliver more real power per unit of apparent authority.

It’s also important to note that a power chart may not be accurate for predicting the performance of a generator in every possible situation. The actual output power may be affected by many factors, such as altitudes, different temperatures, humidity, voltage and frequency fluctuations. Therefore, you must consult the manufacturer’s specifications and an experienced electrician if you have any doubts.

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To sum up, Power charts are a powerful tool for understanding the capabilities of generators; it’s an essential resource when trying to determine which generator is best suited for a particular application or when trying to compare the performance of different generators. However, as with any technical data, it’s important to consult the manufacturer’s specifications and consult an experienced electrician if you have any doubts.

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