High 3rd harmonic on the neutral

MS01 over 4 years ago

Afternoon,

I was wondering if anyone has nay experiences of having issues with high 3^rd harmonic currents on the neutral on high-rised residential schemes? I appreciate non-linear single phase loads will impact the 3^rd harmonic and even on a balanced system harmonics are an issue but we are measuring it at 300% but I can’t think why this may be the case on a residential building.

Does anyone have any ideas?

M

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0 Former Community Member over 4 years ago

I think the OP is suggesting that the total harmonic distortion as a % is quite high - as only triplen harmonics will be additive in the neutral, it would be useful to see the harmonic distortion of just the triplens

% Harmonic distortion is a useful metric, but it needs other data to draw a conclusion as pointed out above

300% THD doesn't seem a credible value to me

Regards

OMS
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0 Former Community Member over 4 years ago

I think the OP is suggesting that the total harmonic distortion as a % is quite high - as only triplen harmonics will be additive in the neutral, it would be useful to see the harmonic distortion of just the triplens

% Harmonic distortion is a useful metric, but it needs other data to draw a conclusion as pointed out above

300% THD doesn't seem a credible value to me

Regards

OMS
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Vote Up 0 Vote Down

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High 3rd harmonic on the neutral

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