Preventive Maintenance for Transformers: What Gets Overlooked
Most facility teams schedule transformer maintenance and assume that's enough. But a lot of the actual risk hides in the details nobody checks, especially with an isolation and distribution transformer , where subtle wear often goes unnoticed until it's too late. The Checks That Usually Get Skipped Standard maintenance routines tend to focus on the obvious stuff: oil levels, temperature, visible damage. The problems that actually cause failures often sit somewhere quieter. Insulation Resistance Testing Insulation breaks down slowly, long before it becomes visible or shows up in routine inspections. Skipping periodic resistance testing means you're often finding out about a problem only after it's already caused damage. Loose Connections Nobody Notices A slightly loose terminal connection doesn't always trip anything right away. It just quietly generates heat over months, and by the time someone spots the discoloration, real damage has usually already been done. Why ...