Proper testing and maintenance performed at the predefined intervals can uncover a problem before a unit fails resulting in costly outages.
It is therefore of utmost importance to have planned preventive maintenance programs. Maintenance should include comprehensive oil testing as defined in the quality system. Maintenance and evaluation of results should be based upon internationally accepted guidelines, ie ASTM; IEC; Doble; SD Meyers and ABB.
Test results should then be used for the following:
Frequency of planned maintenance
Evaluation of expected performance of transformer fleet
Replacement of transformers
In this business area our service technicians are daily on the road to perform the following functions on transformers from 1MVA up to 800 MVA:
After installation during warranty periods
Units stored as strategic spares
Units in operation
Paint Spot Repairs
Protection Component Replacements
Oil Vacuum Filtering
Investigate In-tank Inspections
Tap Changer Replacement and repairs
Inspection Finding Reports