Partial Discharge Test - Solid Dielectric Module

Inspection template for recording partial discharge measurements on epoxy-encapsulated and solid dielectric switchgear components to identify voids, insulation defects, and manufacturing anomalies during routine testing of cast modules.

Test Identification and Scope

• Module identification recorded
  Record the module serial number, part number, voltage class, and test station identifier.
• Test type confirmed as routine partial discharge test
  Confirm this is a 100 percent routine test on a cast solid dielectric or epoxy-encapsulated module.
• Test standard or procedure referenced
  Enter the applicable internal procedure, customer specification, or test method reference used for this inspection.

Safety Preconditions and Test Setup

• Lockout-tagout applied where required
  Verify the test article and associated circuits are de-energized and controlled per site lockout-tagout procedure.
• Work area controlled and access restricted
  Confirm barriers, signage, and access control are in place to keep unauthorized personnel clear of the test area.
• Required PPE worn
  Select all PPE used for the test setup and measurement activity.
• Test equipment calibration current
  Confirm the partial discharge detector, sensors, and any coupling or measurement accessories are within calibration date.

Environmental and Instrument Conditions

• Ambient temperature
  Record ambient temperature at the test location.
• Relative humidity
  Record relative humidity at the test location.
• Background noise or interference acceptable
  Confirm the electromagnetic or acoustic background level does not prevent reliable partial discharge measurement.
• Measurement method selected
  Select the partial discharge detection method used for this test.

Partial Discharge Measurements

• Test voltage applied
  Record the applied test voltage during the measurement.
• Measured partial discharge level
  Record the measured partial discharge magnitude at the specified test point.
• Measurement location or test point
  Identify the module, phase, bushing, termination, or other location where the reading was taken.
• Repeat reading stable
  Confirm the reading is repeatable and not caused by transient interference or setup instability.

Defects, Findings, and Disposition

• Evidence of voids, cracks, or insulation defects observed
  Record whether the test or visual review identified signs of voids, cracks, delamination, tracking, or other insulation anomalies.
• Corrective action or disposition recorded
  Document the disposition for any non-conformance, including re-test, repair, hold, or reject status.
• Photo evidence captured
  Attach photos of the test setup, instrument display, or any defect indication as applicable.

Final Review and Sign-Off

• Inspection result accepted
  Confirm the module meets the acceptance criteria for the routine partial discharge test.
• Inspector signature
  Inspector or competent person sign-off confirming the record is complete and accurate.
• Review date and time
  Record when the inspection record was completed and reviewed.