At Generator Source, many of our customers rely upon us to provide them with accurate and informative answers to their electrical, engine, and generator related questions. This results in numerous questions every day, some of which are quite common and we answer quite frequently. In order to better inform our customers and website visitors alike on some of the most popular topics and issues we encounter, we have decided to begin a list of Frequently Asked Questions.
We plan to expand uponthis section over time and add any other commonly asked question that we encounter. If you have any additional questions you would like to see showcased here please email us with your suggestions and we will do our best to answer and incorporate them here. What is the difference between standby, continuous, and prime power ratings?
If I am interested in a generator that is not the voltage I need, can the voltage be changed? Can a generator I am looking at parallel with one I already own? What is the difference between kW and kVa? The primary difference between kW kilowatt and kVA kilovolt-ampere is the power factor.
The power factor, unless it is defined and known, is therefore an approximate value typically 0. In relation to industrial and commercial generators, kW is most commonly used when referring to generators in the United States, and a few other countries that use 60 Hz, while the majority of the rest of the world typically uses kVa as the primary value when referencing generator sets.
To expand on it a bit more, the kW rating is essentially the resulting power output a generator can supply based on the horsepower of an engine. For example if you have a horsepower engine it has a kW rating of The kilovolt-amperes kVa are the generator end capacity.
Generator sets are usually shown with both ratings. To determine the kW and kVa ratio the formula below is used. But because no system is completely efficient, not all of the apparent power will be converted into useful output.
To convert kW to kVA, you first need to know the efficiency or power factor of the system. Power factor pf is measured on a scale from 0 to 1. If you hire one of our generators, your local sales engineer will be able to help you identify the most suitable equipment for your project.
They will take the time to get to know your job and discuss exactly what you will be powering and for how long. From there, they can advise on the most suitable generator size, fuel tank and other ancillary items. This page will explain in simple terms the difference between the power ratings and describe when each should be used in your data center and network architecture planning.
A KVA is simply 1, volt amps. A volt is electrical pressure. An amp is electrical current. A term called apparent power the absolute value of complex power, S is equal to the product of the volts and amps.
On the other hand, a watt W is a measurement of real power. Real power is the amount of actual power that can be drawn from a circuit.
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