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Run: Switchgear and Breaker Functional Test Record

Record switchgear and breaker functional tests in one place, including visual checks, insulation resistance, contact resistance, and trip timing. Use it to d...

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Test Record and Job Information

Record switchgear lineup, breaker identifier, voltage class, manufacturer, model, serial number, and location.
Document the date, facility, room, and specific equipment location where testing was performed.
Identify the qualified person or testing company responsible for the inspection and test record.
Confirm the record references applicable ANSI/NETA acceptance values and the project or owner-specific test procedure.

Safety Preconditions and Test Readiness

Verify the equipment is de-energized, isolated, and controlled under lockout-tagout before testing.
Confirm absence of voltage on the circuit and test points before contact with conductors or terminals.
Verify required PPE was selected based on the hazard assessment and was worn during the test.
Confirm insulation resistance tester, micro-ohmmeter, timing equipment, and primary injection set are calibrated and in service.
Verify the test area is controlled, access is restricted, and warning signs or barricades are in place.

Visual and Mechanical Inspection

Inspect for signs of overheating, corrosion, moisture intrusion, loose hardware, contamination, or physical damage.
Check for cracks, tracking, carbonization, missing barriers, or other visible defects.
Verify the breaker can be racked, opened, closed, and mechanically operated without binding or abnormal resistance.
Check control wiring, terminal tightness, auxiliary contacts, indicators, and interlocks for visible defects.
Confirm nameplate data, trip unit settings, and coordination-related settings match the approved design or test plan.

Insulation Resistance Testing

Record the insulation resistance test voltage used for the breaker or switchgear assembly.
Record measured insulation resistance between phases and compare to ANSI/NETA acceptance criteria and project requirements.
Record measured insulation resistance from each phase to ground and note any abnormal leakage or low readings.
Confirm the measured values meet the minimum acceptance criteria for the equipment class and test procedure.

Contact Resistance and Continuity

Measure and record contact resistance of each pole or phase using a calibrated low-resistance ohmmeter.
Verify the resistance readings are reasonably balanced across poles and do not indicate a loose or damaged contact path.
Confirm continuity of trip coils, close coils, shunt trip, and control circuit conductors as applicable.
Confirm the measured contact resistance values meet the project or ANSI/NETA acceptance criteria.

Trip Time and Primary Injection Testing

Apply primary current to verify breaker trip operation and current path integrity.
Record the measured trip time for each pole or phase during primary injection or functional trip testing.
Confirm the breaker trips within the acceptable time and functional limits specified by the manufacturer and ANSI/NETA criteria.

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