TRACTION BOX OF A RAILWAY VEHICLE WITH COOLING SYSTEM, METHOD FOR ITS IMPLEMENTATION AND RAILWAY VEHICLE THEREFOR

The present invention concerns a traction enclosure (10) of a rail vehicle, comprising: electrical equipment (16, 17, 18); and a cooling device (20), comprising: first and second fluid circuits, respectively passing through a first (38, 39) and a second (40) heat exchange zone with said electrical equipment; and a first (34) and a second (36) heat exchanger, respectively traversed by said first (54) and said second (60) fluid circuits and allowing heat exchange between said fluid and a first air flow (32). The fluid circuits comprise a first common duct (70, 71, 54) for fluid circulation, passing through the first heat exchanger (34), then connected to a second (60) and a third (62) parallel ducts, the second duct (60) belonging to the second fluid circuit and passing first through the second heat exchanger (36) then the second heat exchange zone (40).