Rebuild program of the power transformers includes:
* All types of dry power transformers up to 1600 kVA, the standard version, voltage level up to 20 kV.
* All types of oil power transformers up to 2500 kVA, voltage levels up to 20kV.
* Mining sub-station in Ex version,production "KONCAR", power 200630 kVA and 7.2 kV voltage level.
During power Transformer rebuild we perform:
* Preparation and coil replacement.
* Filtering and replacement of transformer oil.
* Audit connections, clamping yokes, voltage regulator, thermal and Buholtz protection.
* Overview of the boiler, and conservator and air dryer.
* Control of transformer oil penetrability.