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Technical Support
Maintenance service
The service life of transformers depends heavily on the condition of their insulation. By checking its condition at regular intervals or on special occasions, incipient faults can be predicted, thus avoiding catastrophic consequences.
With a proper maintenance program, it is possible to increase the reliability of the transformer and, with it, that of the system to which it is connected.
Routine tests
- Transformation ratio.
- Winding resistance.
- Insulation resistance.
Oil tests
- Transformation ratio.
- Winding resistance.
- Insulation resistance.
Physical maintenance
- Cleaning.
- Application of dry air (dry transformers).
- Check the physical condition of the equipment.
- Check installed components.
- Condition of connections and installations (enclosure).
- Complete restoration of paintwork and markings (on site).
- Preventive diagnosis.
- Scheduling of future activities in accordance with preventive and predictive maintenance planning.
Electrical testing service
Our company has a modern testing laboratory where the following tests are carried out, in accordance with the applicable NTC standards at each stage for equipment up to 10 MVA and up to 36 kV series.
Routine tests
- Transformation ratio.
- Winding resistance.
- Insulation resistance.
- No-load losses and excitation current.
- Load losses and short-circuit voltage.
- Polarity and connection group check.
- Applied voltage.
- Induced voltage.
Oil tests
- Dielectric strength.
- Color.
- Interfacial tension.
- Specific gravity.
- Viscosity.
- Neutralization number.
Physical maintenance
- Cleaning.
- Application of dry air (dry transformers).
- Check the physical condition of the equipment.
- Check installed components.
- Condition of connections and installations (interior).
- Complete restoration of paint and markings (on site).
- Preventive diagnosis.
- Scheduling of future activities according to preventive and predictive maintenance planning.
