Test Instrument Reference

Data record instr.loop-impedance-tester.rcd-uplift

Verified 2026-10-27 Confidence: High

During a no-trip test the low test current can partly saturate the magnetic core of a residual current device, adding an impedance that is not part of the circuit; this RCD uplift inflates the reading and lowers the calculated fault current, and some instruments apply a measuring technique that removes it from the displayed value.

ProvenanceMegger knowledge hub article supports data record instr.loop-impedance-tester.rcd-uplift, which is cited on the entry Loop impedance tester.SOURCEMegger knowledge hub articleMegger knowledge hub art..Manufacturer pageDATA RECORDinstr.loop-impedance-tester.rcd-upliftinstr.loop-impedance-tes..Verified 2026-10-27ENTRYLoop impedance testerLoop impedance testerNo 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 knowledge hub articleManufacturer page
Data recordinstr.loop-impedance-tester.rcd-upliftVerified 2026-10-27
EntryLoop impedance testerNo revisions
Subject
Loop impedance tester (Instrument classes)
Kind
Instrument fact
Source
Megger knowledge hub article, 2026-02-03 edition, Why RCD Uplift Matters for Loop Impedance Testing, Megger. Publisher page

History

Every recorded change to this data record, oldest first.
DateChange
2026-10-27created
2026-10-27review_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.loop-impedance-tester.rcd-uplift." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/data/instr.loop-impedance-tester.rcd-uplift/.