Polarization index
Updated 2026-10-27
Data records
- Insulation resistance testers with a timed test mode compute the polarization index automatically from the resistance readings they log at the two set times, and report the ratio alongside the final resistance at the end of the timed test.
Elsewhere in the family
- Polarization index more on this entry on Electrical Testing Reference
Sources
- Megger Electrical Tester article, Insulation testing diagnostic techniques, 2008-10-16 edition, Megger. Held as: Public page. Publisher page
Changelog (3 entries)
| Date | Revision | Change |
|---|---|---|
| 2026-10-27 | created (gloss.polarization-index.instrument-readout) | |
| 2026-10-27 | revised (gloss.polarization-index.instrument-readout) | |
| 2026-10-27 | review_status unreviewed -> software_reviewed (gloss.polarization-index.instrument-readout) |
Cite this page
Cite the governing standard for the fact itself; cite this page as the finding aid.
"Polarization index." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/glossary/polarization-index/.
Test Instrument Reference, Polarization index (Oct. 27, 2026), https://www.testinstrumentreference.com/glossary/polarization-index/.
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title = {Polarization index},
howpublished = {\url{https://www.testinstrumentreference.com/glossary/polarization-index/}},
organization = {Test Instrument Reference},
publisher = {Test Instrument Reference},
year = {2026},
note = {last substantive change 2026-10-27}
}{{cite web |title=Polarization index |website=Test Instrument Reference |publisher=Test Instrument Reference |url=https://www.testinstrumentreference.com/glossary/polarization-index/ |date=2026-10-27 |access-date=}}