This UPS inspection checklist guides technicians through assessing DC backup power systems. It covers identifying the UPS asset, charger or cabinet details, location, make and model, and system voltage (12V, 24V, 48V, 110V, 240V). Capture battery make, model, amp hours, and quantity. Perform electrical and mechanical inspections, confirming secure terminations, component condition, insulation and segregation, and adequate ventilation. Verify charger indicators and online status with no alarms. Record key measurements including battery temperature, bank voltage, DC current, AC ripple, rectifier current, charger current limit, AC input, DC float output, and DC output current. Conduct a discharge test with current, duration, and end voltage. Log individual battery voltages and provide recommendations for repairs or future inspection intervals, with supporting photos.
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