207 series (JR East)

The 207 series, also known as the 207-900 series, was a Japanese electric multiple unit operated by the Japanese National Railways and its successor the East Japan Railway Company from November 1986 to December 2009. This train is not to be confused with the 207 series built for JR West from 1991; both trains are unrelated apart from designations.
==History==
As the first (and only) variable-frequency drive controlled train set ordered and used by JNR, the 207 series was delivered in 1986 and began service on 1 November 1986 with the introduction of the revised timetable.
After 23 years, the set was retired on 5 December 2009. The set was then moved to Nagano Works on 5 Janaury 2010 for scrapping. No cars from the set have been preserved.
==Design==
The lone set, designated MaTo71, looks somewhat similar to the 203 and 205 series trains.
==Specifications==
Construction was of stainless steel. Each car was 19.5 meters long. Unlike most trains at the time using resistors or electronic choppers to control their traction motors, the 207 series used early specification gate turn-off thyristor variable frequency drives manufactured by Hitachi, which would give a distinctive "roaring" sound somewhat similar to a car shifting gears; the variable frequency drives used on the 207 series were almost, if not completely identical to the ones used on the Tokyu 9000 series introduced around the same time.
==References==
*Wikipedia.org
Category:JR Group trains
Category:Unique locomotives
Category:Electric trainsets
Category:Kawasaki locomotives
Category:Tokyu Car locomotives
Category:Scrapped locomotives
Category:Built in 1986