Archive for the ‘Energy Efficiency – kvar’ Category

Difference between actual Versus installed KVAR

October 24th, 2014 | 1 Comment | Posted in Energy Efficiency - kvar
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Harmonic filter banks are vital components in an electric system. The primary purpose of the banks is to provide an alternate low impedance path for harmonic current, thus reducing the amount of harmonic current in a distribution system. When purchasing the banks, the primary consideration for the engineer is to understand the primary difference between the actual and installed kVAR.

This article by our member Marvin M. provides a guide on the difference between the two as well as why understanding the two distinct values is important when installing harmonic filter banks.

Understanding the Difference Between Actual Versus Installed KVAR

For starters, note that the harmonic filter reactor does result to significant rises in voltage. About a decade ago, most applications of low and medium voltage consisted on linear loads. This means that resonance was uncommon, and a simple addition of capacitors did suffice as a power factor correction measure.


1/8 – Electrical equipment: power harmonics, power factor

October 26th, 2009 | 9 Comments | Posted in Energy Efficiency - kvar, Power quality
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Re active energy and harmonics explain with a car

Re active energy and power harmonics explained with a car

How to understand harmonics & re active energy

Are you a driver? I am sure yes, therefore you will understand power harmonics right away

Imagine a straight road, flat, a perfectly smooth surface, a constant speed. Your car works well, consumes as little as possible, and can run indefinitely.
It’s like an electrical grid with a constant power without harmonics.


How to illustrate “Re active Power” ?

June 22nd, 2009 | 34 Comments | Posted in Energy Efficiency - kvar
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testing active power ?

In an electrical circuit, the active power P is the real power transmitted to loads such as motors, lamps, heaters, computers … The electrical active power is transformed into mechanical power, heat or light.

KVAR, kVAr or kvar?

June 8th, 2009 | 15 Comments | Posted in Energy Efficiency - kvar
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You probably experienced reading documentation, technical papers, or even display of monitoring equipment with reactive power values (for power factor correction…) given in KVAR, kVAr, or kvar.
And you probably asked the question: which symbol should be used?


Power factor correction kvar policy in countries

May 7th, 2009 | 28 Comments | Posted in Energy Efficiency - kvar, Power quality
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I want to share with you information about regulations and policies in different countries about power factor correction: are penalty levels specified, which levels ?

world kvar penalties

world kvar penalties : Germany, Austria, Canada, Spain, France, Portugal, ... ?


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