Data record `tests.transformer-excitation-current.ieeec57-12-90.basis`

Verified 2026-10-24 Confidence: High

Clause 8.5 of IEEE C57.12.90-2021 states excitation current relative to the energized winding's rated line current, uses the smallest kVA rating as the base on a unit that carries more than one cooling-class rating, and for a three-phase unit averages the magnitudes of the line currents recorded during the no-load loss test.

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	IEEE C57.12.90-2021	Licensed standard, clause 8.5
Data record	tests.transformer-excitation-current.ieeec57-12-90.basis	Verified 2026-10-24
Entry	Transformer Excitation Current	No revisions

Subject: Transformer Excitation Current (Test methods)
Kind: Method fact
Source: IEEE C57.12.90-2021, clause 8.5, Test Code for Liquid-Immersed Distribution, Power and Regulating Transformers, IEEE.

History

Every recorded change to this data record, oldest first.
Date	Change
2026-10-24	created
2026-10-24	revised
2026-10-24	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 tests.transformer-excitation-current.ieeec57-12-90.basis." Transformer Testing Reference. 2026-10-24. https://www.transformertestingreference.com/data/tests.transformer-excitation-current.ieeec57-12-90.basis/.

Transformer Testing Reference, Data record tests.transformer-excitation-current.ieeec57-12-90.basis (Oct. 24, 2026), https://www.transformertestingreference.com/data/tests.transformer-excitation-current.ieeec57-12-90.basis/.

@misc{etr-data-tests-transformer-excitation-current-ieeec57-12-90-basis,
  title = {Data record tests.transformer-excitation-current.ieeec57-12-90.basis},
  howpublished = {\url{https://www.transformertestingreference.com/data/tests.transformer-excitation-current.ieeec57-12-90.basis/}},
  organization = {Transformer Testing Reference},
  publisher = {Transformer Testing Reference},
  year = {2026},
  note = {last substantive change 2026-10-24}
}

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