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Tag: IEC 61000-3-12

Does Canada Need Harmonics Emissions Limits?

Does Canada Need Harmonics Emissions Limits?

The Canadian Standards Association has been pursuing adoption of IEC 61000-3-2: Electromagnetic compatibility (EMC) - Part 3-2 and 61000-3-12: Electromagnetic compatibility (EMC) - Part 3-12 that provide requirements on limiting device harmonic current emissions.  These documents, and IEEE 519, provide requirements for limiting the effect of various products on power quality due to the way they process power for their operation.  However, why are these documents Read more [...]
Does Canada Have a Power Line Network Harmonics Problem?

Does Canada Have a Power Line Network Harmonics Problem?

It would seem so, based on efforts by the Canadian Electrical Association to have the Canadian Standards Association to adopt International Electrical Commission harmonics limit standards 61000-3-2 (0-16A) and 61000-3-12 (16A-75A). The rationale given for limits on such currents is to prevent degrading the quality of the power available to where the products might no longer function correctly, or where (in rare cases) one of the system wires may overheat (covered by NEC articles 310.15 (4)(c), 368.258, Read more [...]