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Transformer service
Transformer service
General Maintenance and Electrical Testing
- Measurement of Insulation Resistance
- Core / Clamp
- Clamp / Earth
- Windings / Earth
- Measurement of Winding DC Resistance
- Verification of Voltage Ratio and Vector Group and check of phase displacement
- Measurement of Excitation Current
- Measurement of Dissipation Factor (Tan&) of the insulation system capacitances
- Measurement of Winding Capacitances
- Measurement of Short Circuit impedance at low voltage supply (220/380V)
- Measurement of Magnetic Balance
- Measurement of Dielectric Frequency Response (DFR)
- Measurement of FRA (Frequency Response Analyze)
- General check & Cleaning
- Check of presence of oil leakages and status of gaskets
- Check of accessories’ mechanical functionality for TR and OLTC
- Check of OLTC functionality
- Check and cleaning of bushings
- Replacement of Silica gel
- Function tests of protection devices
- Oil sample Analysis
Transformer digitalization
The possibility to collect and analyze data about the transformer’s health is becoming a key pillar for asset and service managers and transformer end-users.
We can help you to choose the right solution and decide the level of digitalization for your transformer
Installation & Commissioning
Accessories replacement & retrofitting
Oil analysis*
- Dissolved Gas Analysis
- Dielectric Breakdown Voltage
- Furan Analysis (Optional)
- Corrosive Sulphur CCD Test (Optional)
- PCB Content (Optional)
*in collaboration with external accredited laboratory