CERB TRAFO – Restoration of anti-corrosion protection
CERB TRAFO handled the restoration of the anti-corrosion protection of two 20 MVA 21 kV transformers. The transformers are located outdoors, on the grounds of a Bulgarian chemical plant. As the surrounding environment is highly corrosive, the original anti-corrosion protection was severely worn out.
The new anti-corrosion coating is sized for category C4, in accordance with the ISO 1244-2 standard. Prior to application of the coating, the metal surfaces are sandblasted until shiny and degreased. Five layers with a total width of 300 micrometers were laid, as the anti-corrosion protection manufacturer has set an esteemed durability of 10 years.