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Run: Vacuum Interrupter Integrity Open-Gap Withstand Test

Use this Vacuum Interrupter Integrity Open-Gap Withstand Test template to record high-voltage open-gap results, confirm vacuum bottle integrity, and document...

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Inspection Identification

Asset identification recorded

Record the breaker, recloser, or switchgear asset ID, location, and vacuum interrupter designation being tested.

Test date and time recorded

Enter the date and time the open-gap withstand test was performed.

Inspector and competent person identified

Record the inspector name and the qualified/competent person overseeing the test.

Safety Controls and Test Readiness

Lockout-tagout applied and verified critical (required)

Verify the equipment is isolated, de-energized, and controlled under an approved lockout-tagout procedure per OSHA 1910.147.

Yes No N/A

Appropriate arc-flash and shock PPE in use critical (required)

Confirm PPE selection is appropriate for the test setup and voltage exposure, consistent with the site electrical safety program and NFPA 70E.

Yes No N/A

Test area barricaded and access controlled critical (required)

Confirm the test boundary is established, warning signs are posted, and unauthorized personnel are excluded.

Yes No N/A

Test Equipment and Setup

Test instrument identified and calibrated

Record the withstand test set model, serial number, and calibration due date.

Test leads, probes, and grounding connections inspected critical (required)

Verify leads, clamps, and grounding connections are intact, properly rated, and free of visible damage.

Yes No N/A

Open-gap test configuration verified critical (required)

Confirm the vacuum interrupter contacts are fully open and the test circuit is connected across the open contacts as required by the procedure.

Yes No N/A

Withstand Test Parameters

Applied test voltage recorded critical (required)

Record the actual applied withstand voltage used for the open-gap test.

Note (optional)

Test duration recorded

Record the duration that voltage was applied across the open vacuum interrupter contacts.

Note (optional)

Acceptance criterion documented

Record the applicable acceptance criterion or procedure reference used for this test, including the required withstand level.

Results and Deficiencies

Withstand held without flashover or breakdown critical (required)

Indicate whether the vacuum interrupter withstood the applied voltage across open contacts without flashover, puncture, or dielectric breakdown.

Yes No N/A

Evidence of loss of vacuum observed critical (required)

Indicate whether the test result suggests loss of vacuum, such as withstand failure or abnormal discharge behavior.

Yes No N/A

Deficiency description and disposition

Describe any deficiency, non-conformance, or failed interrupter and note the immediate disposition, such as remove from service, retest, or escalate for replacement.

Sign-Off

Corrective action completed or assigned

Document any corrective action, work order, or follow-up required after the test.

Inspector signature critical (required)

Inspector attestation that the test was performed and recorded accurately.

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