Dry type transformer maintenance checklist

Look for discoloration on insulation materials, a burning odor, or unusual sounds like buzzing or humming. You can also use an infrared thermometer to measure surface temperatures at various points. The checklist helps you document these observations systematically, creating a temperature profile history that reveals developing issues before catastrophic failure occurs.

A qualified electrical technician with proper safety training should perform these inspections. They must understand electrical safety procedures and transformer operation principles. You can customize the checklist to guide even less experienced technicians through the inspection process while covering critical maintenance points.

Document all findings thoroughly on the checklist, photograph any visible issues, and consult with an electrical engineer or transformer specialist. For minor issues like dust accumulation, perform cleaning when the transformer is de-energized. For signs of overheating or electrical problems, schedule professional service before the situation worsens.