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NSB Class 69 ((ノルウェー語:NSB type 69)) is an electric multiple unit used by Norwegian State Railways for a variety of commuter trains on the Norwegian railway system, as well as a few medium distance and branch line trains. It is the most common type of trainset in Norway, although the newer NSB Class 72 has also been introduced. All the trains were built by Strømmen. ==History== During the 1960s NSB realized that they would need a new generation of electric multiple units for local traffic. Both the Class 65, 67 and 68 had for thirty years been built with slight modifications, and NSB needed both new and more modern trains for their operations. Among the inspiration was the successful X1 units used in Sweden. NSB decided on a number of rationalizations, first of all a new interior so that two new cars could hold the same capacity as three units from the older models. Secondly NSB wanted quicker trains, and increased the maximum speed from 70 to . This increase in speed was sufficient to reduce the number of trains for a given frequency by a third. For instance on the line from Oslo East Station to Ski this allowed NSB to reduce the number of operative car from nine to four. The 69-set was also given new thyristor engines with 1,200 kW, a lot more than the old units. The first units were delivered on 1 November 1970, and the first series fifteen units (A-series) was put into service from Oslo Ø to Lillestrøm and Ski. The B-series was delivered a few years later, and used for longer lines, soon followed by more C-series units. The D-series was delivered in the 1980s and custom made for longer distances. The last series was delivered in 1993 as part of the stock for the 1994 Winter Olympics. All the original units consisted of twin-car sets, but from 1987 NSB ordered additional middle cars, to make three-car units. This allowed somewhat more flexibility, and NSB kept the A- and B-series as twin-cars so they could combine trains to make any number of cars needed between two and nine. The second two batches of D-series trains delivered in 1990 and 1993 were delivered with three cars. Not until 1982 were the 69-units put into service outside the Oslo area. At first they were tried out on Flåm Line, then in 1984 on the Bergen Commuter Rail. From 1991 they were also used on the Stavanger Commuter Rail. The E- and G-series are rebuilt sets, with higher comfort levels, the former in 1994 for Sørlandet Line between Kristiansand and Stavanger, the latter on Gjøvik Line in 2005. On 14 December 1999 NSB introduced wrap advertising for Freia Melkesjokolade on three of the trains, but chose to discontinue outside advertisements after a while. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「NSB Class 69」の詳細全文を読む スポンサード リンク
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