Test Instrument Reference

Data record qty.turns-ratio.nameplate-deviation

Verified 2026-10-27 Confidence: High

In a healthy winding the measured ratio departs from the nameplate ratio only by the small fraction that the exciting current drops across the winding impedance, so a reading well outside that fraction points to shorted turns, an open winding or a tap changer left on a position other than the nameplate one.

ProvenanceElectrical Testing Reference editorial taxonomy supports data record qty.turns-ratio.nameplate-deviation, which is cited on the entry Turns ratio.SOURCEElectrical Testing Reference editorial taxonomyElectrical Testing Refer..Own observationDATA RECORDqty.turns-ratio.nameplate-deviationqty.turns-ratio.nameplat..Verified 2026-10-27ENTRYTurns ratioTurns ratioNo revisions
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StepItemDetail
SourceElectrical Testing Reference editorial taxonomyOwn observation
Data recordqty.turns-ratio.nameplate-deviationVerified 2026-10-27
EntryTurns ratioNo revisions
Subject
Turns ratio (Quantities, units and formulas)
Kind
Definition
Source
Electrical Testing Reference editorial taxonomy, 2026-10 edition, Electrical Testing Reference editorial taxonomy of test methods, Electrical Testing Reference.

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 qty.turns-ratio.nameplate-deviation." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/data/qty.turns-ratio.nameplate-deviation/.