Transformer Leak Repair & Regasketing

Leaking transformers can be a costly problem:

  • Moisture and oxygen can enter a transformer through leaking gaskets, causing accelerated aging of insulation and insulation failure
  • Oil spilling onto the ground and possibly into groundwater can be expensive to remedy; leaking oil can carry lead from transformer paint (if paint is lead-based) into the ground causing further contamination
  • Leaks above the transformer oil can allow the nitrogen blanket to escape, causing more frequent nitrogen bottle replacements if equipped with a positive pressure system

Waukesha® Service Can Help Solve Your Leak Problems

We can either fix just the leaking location(s) or completely regasket all transformer openings and reprocess the oil to restore equipment to good condition. Job scope is completely up to the customer!

Waukesha Service Regasketing Inside

Steps Involved in Regasketing a Transformer

  1. Establish baselines
  2. Analyze baseline data for problems
  3. Drain oil
  4. Regasket all openings on outside of tank
  5. Visually inspect LTC for problems and advise
  6. Pressure test with dry air
  7. Perform vacuum drop test
  8. Pull vacuum/process transformer per customer specifications
  9. Refill transformer with vacuum degasified oil
  10. Implement system checks
  11. Compare system checks to baselines
  12. Walk-through with customer
  13. Issue final project report

Other Capabilities

In addition to regasketing, Prolec GE Waukesha has the equipment, experience and capabilities to complete other repairs and/or upgrades you may elect to perform while your transformer is drained of oil, such as insulation dryouts, bushing replacements, LTC repairs/upgrades, natural ester retrofill, etc.; combining services can minimize costs and transformer downtime.