20
Harmonic distortion
If there are requirements for harmonics distortion level, then typically a
mains choke is needed. Total harmonic distortion is about 40…45 %, when
mains choke types CHK-xx are used according to default selection. Then
typically also the requirements for harmonic distortion according to
standards IEC 61000-3-2, IEC 610003-4 and IEC 610003-12 are fulfilled.
A more accurate harmonics analysis can be made with sizing tool DriveSize.
See also ABB’s Guide to Harmonics with AC Drives in AC Drives Technical
Guide Book for basic theory about this topic.
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