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High 3rd harmonic on the neutral

MS01
Afternoon,

I was wondering if anyone has nay experiences of having issues with high 3rd harmonic currents on the neutral on high-rised residential schemes? I appreciate  non-linear single phase loads will impact the 3rd 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
    A Megger MFT1741 will measure between 150 and 400 hertz, so if the harmonic current is high will it display 150 hertz rather than 50 hertz?


    Andy B.
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  • 0
    A Megger MFT1741 will measure between 150 and 400 hertz, so if the harmonic current is high will it display 150 hertz rather than 50 hertz?


    Andy B.
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