| The electrification of the Portuguese Railways was developed under the Planos de Fomento. The 2500 series electric locomotive was placed in service in 1957, under the First part of the Plan. Part two had the objective of lead north the electrification of the North line, as well as the acquisition of more rolling stock, with higher incorporation of National industry. To this end, SOREFAM Engineering department designed a 2500 stainless steel casing for a locomotive with the same characteristics as the 2500. In 1963, the prototype locomotive was built and sent to trials. It was given the number 2551. In view of the positive results, CP commissioned the construction of another 19. They began to be delivered in September 1964. These 20 units would form the 2550 series. They were placed immediately ahead of the noblest services. The rapid trains to Porto began to present 100% stainless steel rolling stock. The 2550’s were used in most inaugural trains of the sections that were electrified from then. (by xtrain24.de) |