Test Instrument Reference

Data record instr.transformer-turns-ratio-tester.voltage-ratio-assumption

Verified 2026-10-27 Confidence: High

What the instrument measures is the voltage ratio of the transformer; with no load on the secondary that voltage ratio is taken as the turns ratio, and for a three-phase transformer a correction factor that depends on the vector group of the windings may need to be applied before the result is compared with the nameplate.

ProvenanceMegger product page supports data record instr.transformer-turns-ratio-tester.voltage-ratio-assumption, which is cited on the entry Transformer turns ratio tester.SOURCEMegger product pageMegger product pageManufacturer pageDATA RECORDinstr.transformer-turns-ratio-tester.voltage-ratio-assumptioninstr.transformer-turns-..Verified 2026-10-27ENTRYTransformer turns ratio testerTransformer turns ratio ..No revisions
Provenance. Where this record comes from and where it is used: the cited source, the record itself and the entry that cites it.
Provenance: the chain from source to entry.
StepItemDetail
SourceMegger product pageManufacturer page
Data recordinstr.transformer-turns-ratio-tester.voltage-ratio-assumptionVerified 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
2026-10-27revised
2026-10-27review_status unreviewed -> software_reviewed

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Cite the governing standard for the fact itself; cite this page as the finding aid.

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