Test Instrument Reference

Data record instr.transformer-turns-ratio-tester.phase-deviation

Verified 2026-10-27 Confidence: High

The phase deviation between the high and low windings of a sound transformer is very small; a significant deviation reflects an inefficient core, such as shorts between laminations, and phase deviation together with ratio error serves as a low-cost check of the accuracy class of instrument transformers at zero burden.

ProvenanceMegger product page supports data record instr.transformer-turns-ratio-tester.phase-deviation, which is cited on the entry Transformer turns ratio tester.SOURCEMegger product pageMegger product pageManufacturer pageDATA RECORDinstr.transformer-turns-ratio-tester.phase-deviationinstr.transformer-turns-..Verified 2026-10-27ENTRYTransformer turns ratio testerTransformer turns ratio ..No revisions
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StepItemDetail
SourceMegger product pageManufacturer page
Data recordinstr.transformer-turns-ratio-tester.phase-deviationVerified 2026-10-27
EntryTransformer turns ratio testerNo revisions
Subject
Transformer turns ratio tester (Instrument classes)
Kind
Instrument fact
Source
Megger product page, web page edition, TTRU3 True three-phase transformer turns ratio tester, Megger. Publisher page

History

Every recorded change to this data record, oldest first.
DateChange
2026-10-27created
2026-10-27review_status unreviewed -> software_reviewed

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"Data record instr.transformer-turns-ratio-tester.phase-deviation." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/data/instr.transformer-turns-ratio-tester.phase-deviation/.