Test Instrument Reference

Data record instr.vacuum-interrupter-tester.mac-method

Verified 2026-10-27 Confidence: Medium

The magnetron atmospheric condition (MAC) method runs the Penning discharge test that interrupter manufacturers use at the factory: with the contacts open a high direct voltage is applied for a short time while a magnetic field from a coil wrapped around the interrupter traps the charge carriers, and the current measured depends on the number of gas molecules present, so a lower current means a better vacuum.

ProvenanceGroup CBS article page supports data record instr.vacuum-interrupter-tester.mac-method, which is cited on the entry Vacuum interrupter tester.SOURCEGroup CBS article pageGroup CBS article pageManufacturer pageDATA RECORDinstr.vacuum-interrupter-tester.mac-methodinstr.vacuum-interrupter..Verified 2026-10-27ENTRYVacuum interrupter testerVacuum interrupter testerNo revisions
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StepItemDetail
SourceGroup CBS article pageManufacturer page
Data recordinstr.vacuum-interrupter-tester.mac-methodVerified 2026-10-27
EntryVacuum interrupter testerNo revisions
Subject
Vacuum interrupter tester (Instrument classes)
Kind
Instrument fact
Source
Group CBS article page, web page edition, Test Vacuum Interrupters in the Field to Predict Failure and Avoid Downtime, Group CBS. Publisher page

History

Every recorded change to this data record, oldest first.
DateChange
2026-10-27created
2026-10-27revised
2026-10-27review_status unreviewed -> software_reviewed

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"Data record instr.vacuum-interrupter-tester.mac-method." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/data/instr.vacuum-interrupter-tester.mac-method/.