Preventive maintenance decreases the risk of equipment failures and unscheduled repairs. Our maintenance services always include repairs authorized by the manufacturer and in most cases we are able to bring the equipment back to normal operation condition.

We also provide recommendations for preventive maintenance and spare part programs. Our preventive maintenance approach helps eliminate many potential problems.

Our predictive maintenance services includes:

  • Sampling and analysis of insulating oil.
  • Electrical Tests
  • SFRA Tests
  • Dielectric spectroscopy
  • On-Site inspection

With the information gathered from the preventive maintenance, we do an analysis and reproduce a maintenance plan report for your transformer fleet. The report covers the following areas:

  • High priority maintenance needs by machine and action plan for each transformer.
  • Second-tier priority list, transformers that will need maintenance but that do not need immediate attention.
  • Transformers that do not need any intervention.

What do we do consider for preventative maintenance?

  • Oil degassing and drying through thermo-vaccum filtering. *
  • Transformer oil regeneration/reclaiming treatment. *
  • Core/coil drying
  • OLTC maintenance
  • Accessories maintenance and replacement when needed
  • Leak repairs.

The goal of our preventive maintenance program is to prevent extend the life expectancy of the machine and reduce the overall O&M costs generated by costly equipment failures

* These services can be performed with the transformer in operation; live transformer maintenance work is something we have specialized on for several years.

Corrective maintenance – Repairs

When we have a serious situation that is affecting the transformer we need take action, our services include:

  • Transformer Internal inspection.
  • Bushings replacement
  • Transformer tank removal on site (Core/Coil extraction)
  • On-site repairs.
  • Leakage repairs
  • Overhaul of the transformer.

The goal of the corrective maintenance services is to find the origin of the transformer issues and determine the actions that would be required to correct the problem. Decisions are made in conjunction with the end user regarding major repairs needed through a cost/benefit decision making process.