3. 1922 Pietro Tovo started both transformers and electrical motors reparation. 1939 … 1945 … 1946 Pietro Tovo & Sons started both transformers and electrical motors construction and reparation. 1955 The construction of electrical motors has been stopped. 1960 Foundation of Ocrev as one-man business by Giuseppe Tovo. 1967 Manufacturing of power and distribution transformers. 1968 Change the location of main office from Valdagno To Brogliano and started the construction of new building for offices and work-shop. 1976 Ocrev started the project for manufacturing explosionproof transformers liquid, suitable for desalting plants and mines. 1978 Started the construction of explosionproof transformers MOE serie. 1979 Ocrev started the construction of Cast Resin Transformers TAT/R serie.

4. 1980 The change in a limited company “Ocrev S.r.l.” 1982 Ocrev S.r.l. obtained the certification Eex oed IIB T5 by CESI (Italian Electrotechnical Approved Institute) in according to IEC and CENELEC Standards, for electrical apparatus for potentially explosive atmospheres. 1987 Opening of a new shop-work for carpentry. 1992 Thanks to CREL (ENEL’s Electrical Research Department) Ocrev S.r.l. is the first company in Italy to gain this goal, we obtained the certification for E 1 - C 1 - F 1 classes for Cast Resin Transformers. 1994 Ocrev S.r.l. publish his first Web Site on the Internet. 1996 Ocrev S.r.l. construct the first big special transformers 32MVA for refinery. 1997 Opening of a new building for the location of the administration and sales. 1998 Ocrev S.r.l. certified according to UNI EN ISO 9001 2000 Up to nos more then 7,200 different units of TAT/R serie have been manufactured and installed all over the world. 2001 Ocrev S.r.l. present the new Web Site and electronic catalogue on CD. 2002 New capacity challenge for TAT/R series. An 8MVA & 11MVA are being delivered.

5. The continuos research and investments in electrotechnical field is the key of our winning solutions.