Bernard Bonnefond Est. In 1925. the Main Product is the Varivolt: an on Load Stepless Voltage Variation Transformer, from 30 to 30.000 Kva, Specially Used in Glass Industry, for Electric Furnace and Boosting; Turnover 13.5 M€ Export Sales more than 80%; other Products; I.V.R. (Induction Voltage Regulators) – from 30; Melting Technology for Tank Furnaces; Varivolt: on Load Stepless Variable Voltage Transformer; Electrically Heated Systems; Varivolt: on Load Stepless Variable Voltage Transformer, Electrical Fixtures, Metalworking Machines ...

Melting Technology for Tank Furnaces, GlassTech, Glass Technology ...