JNR Class ED73
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 The first locomotive delivered, ED73 1, in 1962 | |||||||||||||||||||||||||||
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TheClass ED73(ED73 hình)was aBo-Bowheel arrangementACelectric locomotive type operated byJapanese National Railways(JNR) inKyushu,Japan, between 1962 and the 1980s.[1]
Design
[edit]The Class ED73 design was broadly derived from theClass ED72locomotives introduced a year earlier, but as the Class ED73 was primarily intended for use on freight services, it did not include asteam generatorfor train heating, and was therefore 3 m (9 ft 10 in) shorter than the Bo-2-Bo wheel arrangement Class ED72.[1]The DT119B bogies were also almost identical to those used on the full-production Class ED72 locomotives.[2]
History
[edit]A total of 22 locomotives were built byToshibabetween 1962 and 1963.[1]The first locomotives were delivered to Moji Depot in northern Kyushu.[2]
In the late 1960s, the entire class was modified with improved braking performance for use on express freight services, and the locomotives were renumbered in the ED73 10xx series.[1]The locomotive numbers were painted yellow at this time.[1]In later years, the class was also used on overnight sleeping car services, as these trains did not require steam heating.[1]
The class was withdrawn by the early 1980s.[1]No examples of the class have been preserved.[3]
Classification
[edit]The ED73 classification for this locomotive type is explained below.
- E: Electric locomotive
- D: Four driving axles
- 7x: AC locomotive with maximum speed exceeding 85 km/h (55 mph)
References
[edit]
- ^abcdefgInoue, Koichi (1999).Quốc thiết cơ quan xe sự điển: Chưng khí ・ điện khí ・ディーゼル cơ quan xe 66 hình thứcQuốc thiết cơ quan xe từ điển[JNR Locomotive Encyclopedia]. Japan: Sankaido. pp. 140–141.ISBN978-4-381-10338-3.
- ^abTezuka, Kazuyuki (January 1963).Điện xoay chiều khí cơ quan xe ED731[AC electric locomotive ED73 1].Japan Railfan Magazine(in Japanese). Vol. 3, no. 19. Japan: Koyusha Co., Ltd. p. 14.
- ^Sasada, Masahiro (September 2012).Quốc thiết &JR bảo tồn xe bách khoa toàn thư[JNR & JR Preserved Rolling Stock Complete Guide]. Tokyo, Japan: Ikaros Publications Ltd. p. 126.ISBN978-4863206175.
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