Long duration rms variation
Updated 2026-10-27
Data records
- In IEEE 1159-2019 a long-duration rms variation is a deviation of the rms voltage or current from nominal that outlasts the boundary clause 3 sets between short-duration and long-duration variations, described by a magnitude modifier: undervoltage, overvoltage or voltage interruption.
Sources
- IEEE 1159-2019, Recommended Practice for Monitoring Electric Power Quality, 2019 edition, IEEE. Cited: clause 3. Held as: Purchased single-user copy. Publisher page for IEEE 1159-2019Publisher information page
Obtaining the documents
- IEEE 1159-2019: available from the publisher
Changelog (1 entry)
| Date | Revision | Change |
|---|---|---|
| 2026-10-27 | created (gloss.long-duration-rms-variation.ieee1159.definition) |
Cite this page
Cite the governing standard for the fact itself; cite this page as the finding aid.
"Long duration rms variation." Power Quality Reference. 2026-10-27. https://www.powerqualityreference.com/glossary/long-duration-rms-variation/.
Power Quality Reference, Long duration rms variation (Oct. 27, 2026), https://www.powerqualityreference.com/glossary/long-duration-rms-variation/.
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title = {Long duration rms variation},
howpublished = {\url{https://www.powerqualityreference.com/glossary/long-duration-rms-variation/}},
organization = {Power Quality Reference},
publisher = {Power Quality Reference},
year = {2026},
note = {last substantive change 2026-10-27}
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