How often should transformers be inspected?

Transformers should be inspected once or twice a year to ensure they are functioning properly and to identify any potential issues before they lead to failures or safety hazards. Regular inspections help in monitoring the condition of the insulation, checking for leaks, and ensuring that electrical connections remain secure. This frequency of inspection strikes a balance between thorough oversight and practical resource management, allowing for routine maintenance without overwhelming the operational schedule.

While quarterly inspections may seem beneficial, they may not be necessary for all transformers depending on their operating environment and load. Similarly, terms like bi-annually and semi-annually can cause confusion since they are often used interchangeably. However, the recommendation to inspect once or twice a year provides a clear and practical guideline for maintenance personnel. Regular inspections will enhance the longevity and reliability of transformers, ultimately supporting safe and efficient electrical distribution.