Data record `instr.transformer-turns-ratio-tester.excitation-current-pattern`

Verified 2026-10-27 Confidence: High

The excitation current reading, though taken at a lower voltage than a dedicated excitation test, is interpreted by pattern: on a three-phase core the two outer phases draw similar currents and the center phase the lowest, and a departure from that pattern or from earlier results at the same voltage points to core or winding defects such as shorted turns.

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.
Step	Item	Detail
Source	Megger product page	Manufacturer page
Data record	instr.transformer-turns-ratio-tester.excitation-current-pattern	Verified 2026-10-27
Entry	Transformer turns ratio tester	No 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.
Date	Change
2026-10-27	created
2026-10-27	review_status unreviewed -> software_reviewed

Cite this page

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

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

Test Instrument Reference, Data record instr.transformer-turns-ratio-tester.excitation-current-pattern (Oct. 27, 2026), https://www.testinstrumentreference.com/data/instr.transformer-turns-ratio-tester.excitation-current-pattern/.

@misc{etr-data-instr-transformer-turns-ratio-tester-excitation-current-pattern,
  title = {Data record instr.transformer-turns-ratio-tester.excitation-current-pattern},
  howpublished = {\url{https://www.testinstrumentreference.com/data/instr.transformer-turns-ratio-tester.excitation-current-pattern/}},
  organization = {Test Instrument Reference},
  publisher = {Test Instrument Reference},
  year = {2026},
  note = {last substantive change 2026-10-27}
}

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