Maintenance, repair and retrofit of transformers and substations

In order to define your maintenance needs, our experts accompany you for the diagnosis and expertise of your power transformers and your electrical equipment. They can subsequently propose a plan for maintenance and upgrade.

The preliminary diagnosis and expertise form the basis of the maintenance plan and allow us to define the actions to be taken.

Our diagnostics can be done on site or in the factory if necessary (stripping, inspection, detection of the origin of the problem, etc.).

We perform:

• Preventive maintenance of transformers
• Maintenance of MV cells and switchboards
• The maintenance and verification of accessories
• The repair of the sealing of the transformers and the elimination of the oil leaks
• Maintenance of cooling equipment
• The verification of tightening and connections
• The general maintenance of the regulators in load
• The replacement of cables and accessories of the auxiliary cabinets.

Expertise: Preventive maintenance of transformers and substations

• Maintenance of on-load regulators
• Oil leakage removal
• Treatment of dielectric oil
• Replacement of MV cells and transformers
• Adaptation work
• Replacement of accessories
• Troubleshooting and repair following incidents (if possible, on site).

The main services provided:

• Transport, handling and assistance with loading
• Partial or complete rewinding of transformers
• Renewal of transformers (refurbishment)
• Revision after incident and damage
• Replacement of seals, wiring and accessories
• Change or treatment of dielectric oil
• Replacement of bushings and tap changers
• Maintenance or replacement of air conditioners
• Upgrading of MV/LV electrical substations and MV cells

Our technicians, trained, qualified and having several years of experience in the field, will take care of the maintenance of your tap changers in charge:

• Expertise and diagnosis of failures
• Inspection and control of fixed and mobile contacts
• Control of the state of the insertable bodies, linkages, angle returns...etc;
• Maintenance and upkeep of control panels
• Replacement of mechanical contacts and fuses
• All tests
   

• Spare parts for power transformers (gaskets, buchholz, dryers, silecagel, bushings,etc.)
• Spare parts for load tap changer (motor drive, contacts, springs, accumulators, angle transmitters, trap gaskets, etc.)
• Spare parts for MV switchgears (Mechanisms, heating resistors, charger and batteries, etc.).