RAMAC EUROPE has supplied the Grande Arche de La Défense site compliant with TA-LUFT 2000 regulation and with special exchanger system that allows to remote the cooling radiator on top of the building. PRAMAC supplied a total of three GCW1400M generators that have been installed in parallel and are already operational. These were selected to ensure power in case of outages to the Grande Arche de La Défense buildings. La Grande Arche de la Défense is a monument and building in the business district of La Défense and in the commune of Puteaux, to the west of Paris, France. It is usually known as the Arche de la Défense or simply as La Grande Arche.