Switchgear Testing Reference

Data record tests.dielectric-withstand.equipment.switch-open-hv.acceptance

Verified 2026-10-29 Confidence: High

Dielectric Withstand is specified for open medium-voltage and high-voltage air switches in acceptance testing at clause 7.5.1.3.B.5 of ANSI/NETA ATS-2025. The clause calls for a dielectric withstand voltage test on each pole with the switch closed, each pole to ground with the other poles grounded, at the manufacturer's test voltage.

Value: open medium-voltage and high-voltage air switches

ProvenanceANSI/NETA ATS-2025 supports data record tests.dielectric-withstand.equipment.switch-open-hv.acceptance, which is cited on the entry Dielectric Withstand.SOURCEANSI/NETA ATS-2025ANSI/NETA ATS-2025Licensed standard, clause 7.5.1.3.B.5DATA RECORDtests.dielectric-withstand.equipment.switch-open-hv.acceptancetests.dielectric-withsta..Verified 2026-10-29ENTRYDielectric WithstandDielectric WithstandNo 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 ATS-2025Licensed standard, clause 7.5.1.3.B.5
Data recordtests.dielectric-withstand.equipment.switch-open-hv.acceptanceVerified 2026-10-29
EntryDielectric WithstandNo revisions
Subject
Dielectric Withstand (Test methods)
Kind
Equipment fact
Source
ANSI/NETA ATS-2025, clause 7.5.1.3.B.5, Acceptance Testing Specifications for Electrical Power Equipment and Systems, NETA. Publisher page for ANSI/NETA ATS-2025Publisher information page
Also stated in
  • FIST 4-7, section 6.1.52, page 143 (August 2023).
    Read the reference passage

    6.1.52 Substation (High Voltage)

    "The applied voltage for the high voltage test will depend on the system voltage and will be determined as recommended by the equipment supplier. The high voltage test is typically done for one minute."

    FIST 4-7, section 6.1.52, page 143, August 2023. Agency copy of FIST 4-7

    The current standard governs; this passage is a public-domain description of the practice dated August 2023.

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.dielectric-withstand.equipment.switch-open-hv.acceptance." Switchgear Testing Reference. 2026-10-29. https://www.switchgeartestingreference.com/data/tests.dielectric-withstand.equipment.switch-open-hv.acceptance/.