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  News  Industry News  Dataforth Adds New Application Note to Library: Harmonics and Utility Costs
Industry News

Dataforth Adds New Application Note to Library: Harmonics and Utility Costs

Dataforth CorporationDataforth Corporation—May 19, 20160
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Dataforth has just published Application Note 129, Harmonics and Utility Costs. The objective of the 10-page document is to show how different types of harmonics in a customer’s facility affect utility-measured quantities and costs.

In today’s age of electronics, most modern electrical equipment has embedded microprocessors and electronic circuitry to increase functionality and efficiency; this type of equipment generally represents a nonlinear load resulting in non-sinusoidal line currents, which are rich in harmonics. In addition, modern LED lighting generates line current harmonics, while nonlinearities of magnetic fields in transformers and rotating air gaps create some harmonics as well.

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Find all the details at www.dataforth.com/catalog/pdf/an129_Harmonics_a[…].

The Application Note begins with a review of some common terms and equations used by utility power companies. The “Power Triangle” is then introduced, illustrating the relationship between the quantities KW (Real Power), KVA (Apparent Power), KVAR (Reactive Power), and PF (Power Factor) found in AC sinusoidal power distribution systems. Power Triangle equations follow, providing insight into the behavior of the Power Triangle model of energy consuming loads. This is followed by a discussion of utility billing – which is different for residential customers and commercial/industrial facilities – and the effects of harmonics created by nonlinear loads.

The conclusion leaves readers with a list of questions that electrical energy users might want to consider, such as: Do I have harmonics in my system? For exactly what quantities am I charged? How does my utility company measure billing items? How does my utility company handle harmonics?

Four appendices provide additional in-depth information.

AN129 Harmonics and Utility Costs joins the Dataforth library of Application Notes; the full list of offerings is available at www.dataforth.com/application-notes.aspx

Dataforth was established in 1984 and is the world leader in data acquisition and control, signal conditioning, and data communication products for industrial applications. Worldwide, our products provide rugged signal and data integrity and wide spectrum accuracy. All Dataforth products are manufactured in the USA and have been RoHS Compliant since 2006. The Dataforth Quality Management System is ISO9001:2008 registered.

For additional information, call 800-444-7644 toll-free, email [email protected], or visit our website at www.dataforth.com.

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