PM 820 Harmonics

[Anonymous user]

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.

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.

[JamesAZZO]

How can THD ever really be over 100%?

[sesa44646]

, can you direct this to the right person?