The Class 92 is a dual-voltage British Rail locomotive which can run on 25 kV AC from overhead wires or 750 V DC from a third rail. It was designed specifically to operate services through the Channel Tunnel between Britain and France. Eurotunnel indicates the Class 92 locomotive as the reference for other locomotives which railway undertakings might want to get certified for usage in the Channel tunnel. The fleet of 46 locomotives was built by a consortium of Brush Traction and ABB Traction (now part of Bombardier) for British Rail. Parts construction was sub-contracted, with only final construction and commissioning being undertaken at Brush's erecting shops at Loughborough between 1993 and 1996 (First unit was produced from 1992, and was finished in April 1993) The bodyshells, shared with the similar looking Class 60 diesel locomotives but with a modified front end, were fabricated by Bombardier Prorail (formerly Procor) of Horbury and delivered pre-painted in then standard triple grey livery. Propulsion is provided by two ABB traction converters using GTO devices, with control via an ABB MICAS-S2. Maximum power is 6760 hp (5 MW) on 25 kV or 5360 hp (4 MW) on 750 V; with a tractive effort of 360 kN. The locomotive is fitted with both rheostatic and regenerative brakes, in addition to standard Westinghouse air brake equipment. An electrical train bus is fitted to enable two locomotives to work in multiple formation, either double-heading or push-pull passenger train with a Driving Van Trailer or DBSO. Locomotive No. 92017 was formerly named "Shakespeare".