A Preventive Maintenance Checklist for Substations

Unplanned substation downtime is expensive and often preventable. A structured maintenance routine catches most failures before they cause an outage.

Monthly visual inspections should check for oil leaks, corrosion, and loose connections. Thermal imaging during peak load reveals hotspots long before a fault occurs.

Annual protection relay testing confirms trip settings remain accurate as load profiles shift over time.

Documenting every inspection creates a maintenance history that makes root-cause analysis far faster when something does go wrong.