What Does A Transformer Repair Entail?

Infrared Inspection of Transformer
Transformer Oil, Old and New

Sometimes during transformer infrared inspection or during a GA oil analysis problems are found.

Elbow Problem Infrared Scan

Elbow Problem

Bushing Well Insert Problem

Bushing Well Insert Problem

If you don’t fix transformer issues found during your infrared inspection you might find yourself doing this!

Replacing a Transformer

Transformer problem areas can include the following internal parts:

Basic Dead Front Connection Diagram
  • HV Cable
  • Loadbreak Insert
  • Bushing Well
  • Oil in the Transformer Front
  • Current Limiting Fuses

All transformer repairs require at least 8 hours of outage.

Draining the Transformer Oil

Draining Transformer Oil
Draining Transformer Oil

Changing out Internal Parts

Some transformer fixes require draining the DGA oil so the transformer’s internal parts like current limiting fuses or expulsion fuses can be changed out.

Current Limiting Fuses

Current Limiting Fuse
Current Limiting Fuse
Current Limiting Fuse
Current Limiting Fuse

Expulsion Fuses

Expulsion Fuses

All-Test can help you with infrared inspections and transformer maintenance & repair.