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PM 820 Harmonics

Metering & Power Quality

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aaron_azzo_com_
Ensign
Ensign
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2
267

PM 820 Harmonics

Good afternoon all.

Upon looking at some values from one of our Portable PM820's that just came back from a client's site, I noticed some erroneous current THD readings:

5492

I'm aware that anything below 1 ampere will have a multiplying affect on harmonics, but this is not the case here.  Also, please note how the values (current) before and after the boxed value are very similar, and yet the % of THD is almost 40% different.  Any explanations on how this could be above 100% would be fantastic.

Tags (3)
2 Replies 2
JamesAZZO
Sisko | EcoXpert Master Sisko | EcoXpert Master
Sisko | EcoXpert Master
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0
208

Re: PM 820 Harmonics

How can THD ever really be over 100%?

sesa44646
Schneider Alumni (Retired)
Schneider Alumni (Retired)
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0
208

Re: PM 820 Harmonics

, can you direct this to the right person?