Cerb Group

CERB EAD was established in 1948 and, over more than 77 years of operation, has earned a reputation as a reliable provider of repair services for power facilities both in Bulgaria and internationally. We offer diagnostics, testing, repair, and maintenance services—either on-site or at our facilities. Our Services Include:*Repair of dry-type and oil-immersed transformers, autotransformers, and reactors *On-Load Tap Changer (OLTC) – Motor Drive Unit service and repair *Manufacturing of Neutral Earthing Resistors (NER) and star point grounding systems *Transformer oil regeneration *Repair of all types of electrical rotating machines *Diagnostics, electrical measurements, and testing of electrical machines *Vibration diagnostics for turbo and hydro generators, steam turbines, electric motors, fans, and other rotating machinery with rolling or sliding bearings *Balancing of turbo and hydro generators, steam turbines, electric motors, fans, and other rotating mechanisms—either on a stand or on their own supports *Adjustment of steam turbine regulation systems *Transport services, including the transportation of heavy loads