Phase sequence
Updated 2026-10-27
Data records
- Phase sequence is the order in which the voltages of a three-phase supply reach their positive peaks, labeled positive or negative rotation; it sets the direction of rotation of a connected motor and must agree before two supplies are paralleled.
- A non-contact phase detector senses the phase sequence of a three-phase supply by static induction through clips placed on the insulation of each conductor, indicating positive sequence with a rotating indicator and an intermittent tone and negative sequence with the opposite rotation and a continuous tone.
Elsewhere in the family
- Phase Rotation and Phasing related entry on Electrical Testing Reference
- Phase Rotation and Phasing related entry on Motor Testing Reference
- Phase Rotation and Phasing related entry on Switchgear Testing Reference
Sources
- Electrical Testing Reference editorial taxonomy, Electrical Testing Reference editorial taxonomy of test methods, 2026-10 edition, Electrical Testing Reference. Held as: Own observation.
- Hioki product page, PHASE DETECTOR PD3129, web page edition, Hioki. Held as: Public page. Publisher page
Changelog (4 entries)
| Date | Revision | Change |
|---|---|---|
| 2026-10-27 | created (gloss.phase-sequence.definition) | |
| 2026-10-27 | review_status unreviewed -> software_reviewed (gloss.phase-sequence.definition) | |
| 2026-10-27 | created (gloss.phase-sequence.usage) | |
| 2026-10-27 | review_status unreviewed -> software_reviewed (gloss.phase-sequence.usage) |
Cite this page
Cite the governing standard for the fact itself; cite this page as the finding aid.
"Phase sequence." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/glossary/phase-sequence/.
Test Instrument Reference, Phase sequence (Oct. 27, 2026), https://www.testinstrumentreference.com/glossary/phase-sequence/.
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howpublished = {\url{https://www.testinstrumentreference.com/glossary/phase-sequence/}},
organization = {Test Instrument Reference},
publisher = {Test Instrument Reference},
year = {2026},
note = {last substantive change 2026-10-27}
}{{cite web |title=Phase sequence |website=Test Instrument Reference |publisher=Test Instrument Reference |url=https://www.testinstrumentreference.com/glossary/phase-sequence/ |date=2026-10-27 |access-date=}}