|
Power Quality and Lighting (Part II) EN 61000-3-2; Controlling Harmonic Emissions in Lighting Applications
This article will continue the discussion of power quality in lighting and look at some of the ways to control harmonic content. There are several standards in use and the categorization of emissions limits varies from one standard to the next, though they have much in common. Compliancy is based on the standard referenced for each. EN61000-3-2 Class C is the standard which considers only the harmonic emissions themselves as shown below.
|
EN 61000-3-2 Class C Lighting | |
Harmonic Order
n |
Maximum Harmonic Input Current % of Fundamental | |
2 |
2 | |
3 |
30° PF | |
5 |
10 | |
7 |
7 | |
9 |
5 | |
11 = n = 39 |
3 |
Other regulations include Energy Star standards for luminaries as well as the ANSI (American National Standards institute) C82.77-2002. Read Full Article....
(For more information regarding the basic principles of EN61000-3-2 Class C see the Astrodyne article titled, "Power Quality and Lighting").
|
