Circuit Breaker Reference

Data record tests.insulation-resistance.equipment.breaker-vacuum.maintenance

Verified 2026-10-29 Confidence: High

Insulation Resistance is specified for medium-voltage vacuum circuit breakers in maintenance testing at clause 7.6.3.B.2 of ANSI/NETA MTS-2023. The clause calls for a one-minute insulation-resistance test on each pole, phase-to-phase and phase-to-ground with the breaker closed and across each open pole, at the manufacturer's test voltage.

Value: medium-voltage vacuum circuit breakers

ProvenanceANSI/NETA MTS-2023 supports data record tests.insulation-resistance.equipment.breaker-vacuum.maintenance, which is cited on the entry Insulation Resistance.SOURCEANSI/NETA MTS-2023ANSI/NETA MTS-2023Licensed standard, clause 7.6.3.B.2DATA RECORDtests.insulation-resistance.equipment.breaker-vacuum.maintenancetests.insulation-resista..Verified 2026-10-29ENTRYInsulation ResistanceInsulation ResistanceNo revisions
Provenance. Where this record comes from and where it is used: the cited source, the record itself and the entry that cites it.
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StepItemDetail
SourceANSI/NETA MTS-2023Licensed standard, clause 7.6.3.B.2
Data recordtests.insulation-resistance.equipment.breaker-vacuum.maintenanceVerified 2026-10-29
EntryInsulation ResistanceNo revisions
Subject
Insulation Resistance (Test methods)
Kind
Equipment fact
Source
ANSI/NETA MTS-2023, clause 7.6.3.B.2, Maintenance Testing Specifications for Electrical Power Equipment and Systems, NETA. Publisher page for ANSI/NETA MTS-2023Publisher information page

History

Every recorded change to this data record, oldest first.
DateChange
2026-10-29created

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

"Data record tests.insulation-resistance.equipment.breaker-vacuum.maintenance." Circuit Breaker Reference. 2026-10-29. https://www.circuitbreakerreference.com/data/tests.insulation-resistance.equipment.breaker-vacuum.maintenance/.