Switchgear Testing Reference

Data record tests.contact-resistance.equipment.switch-mv-enclosed.maintenance

Verified 2026-11-02 Confidence: High

Contact Resistance is specified for metal-enclosed medium-voltage air switches in maintenance testing at clause 7.5.1.2.B.2 of ANSI/NETA MTS-2023. The clause calls for the contact resistance across each switchblade assembly and fuseholder to be measured.

Value: metal-enclosed medium-voltage air switches

ProvenanceANSI/NETA MTS-2023 supports data record tests.contact-resistance.equipment.switch-mv-enclosed.maintenance, which is cited on the entry Contact Resistance.SOURCEANSI/NETA MTS-2023ANSI/NETA MTS-2023Licensed standard, clause 7.5.1.2.B.2DATA RECORDtests.contact-resistance.equipment.switch-mv-enclosed.maintenancetests.contact-resistance..Verified 2026-11-02ENTRYContact ResistanceContact 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.
Provenance: the chain from source to entry.
StepItemDetail
SourceANSI/NETA MTS-2023Licensed standard, clause 7.5.1.2.B.2
Data recordtests.contact-resistance.equipment.switch-mv-enclosed.maintenanceVerified 2026-11-02
EntryContact ResistanceNo revisions
Subject
Contact Resistance (Test methods)
Kind
Equipment fact
Source
ANSI/NETA MTS-2023, clause 7.5.1.2.B.2, Maintenance Testing Specifications for Electrical Power Equipment and Systems, NETA. Publisher page for ANSI/NETA MTS-2023Publisher information page
Also stated in
  • Stated independently by TM 5-684 / NAVFAC MO-200 / AFJMAN 32-1082, section 8-11.c, PDF page 105, printed 8-5, item (6) and its item (a) (29 November 1996).
    Read the reference passage

    8-11.c(6). Contacts

    "Contacts should be cleaned and adjusted in accordance with manufacturer's instructions. Modern switches are normally designed so that the contacts are self-cleaning, by virtue of the opening and closing action of the switch. After a switch remains in either position for a long time, it should be operated several times during a maintenance inspection. This operation will clean the contact surfaces. Operate only after getting clearance and after the circuit has been deenergized. (a) Do not use a coarse abrasive to clean contacts. If contact pitting is minor, smooth the surface with clean crocus cloth or as the manufacturer recommends."

    TM 5-684 / NAVFAC MO-200 / AFJMAN 32-1082, section 8-11.c, PDF page 105, printed 8-5, item (6) and its item (a), 29 November 1996. Agency copy of TM 5-684 / NAVFAC MO-200 / AFJMAN 32-1082

    The current standard governs; this passage is a public-domain description of the practice dated 29 November 1996.

History

Every recorded change to this data record, oldest first.
DateChange
2026-11-02created

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

"Data record tests.contact-resistance.equipment.switch-mv-enclosed.maintenance." Switchgear Testing Reference. 2026-11-02. https://www.switchgeartestingreference.com/data/tests.contact-resistance.equipment.switch-mv-enclosed.maintenance/.