Test Instrument Reference

Data record instr.winding-resistance-meter.demagnetization

Verified 2026-10-27 Confidence: High

A direct-current resistance test leaves residual magnetism in the transformer core, and residual flux can cause high inrush current at energization and distort later exciting-current and frequency response measurements, so winding resistance meters include a controlled demagnetization function that is run after testing.

ProvenanceOMICRON application page supports data record instr.winding-resistance-meter.demagnetization, which is cited on the entry Winding resistance meter.SOURCEOMICRON application pageOMICRON application pageManufacturer pageDATA RECORDinstr.winding-resistance-meter.demagnetizationinstr.winding-resistance..Verified 2026-10-27ENTRYWinding resistance meterWinding resistance meterNo revisions
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StepItemDetail
SourceOMICRON application pageManufacturer page
Data recordinstr.winding-resistance-meter.demagnetizationVerified 2026-10-27
EntryWinding resistance meterNo revisions
Subject
Winding resistance meter (Instrument classes)
Kind
Instrument fact
Source
OMICRON application page, web page edition, Power Transformers - diagnostic testing methods, OMICRON electronics. 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.winding-resistance-meter.demagnetization." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/data/instr.winding-resistance-meter.demagnetization/.