JNR Class ED73
Class ED73 | |
---|---|
The first locomotive delivered, ED73 1, in 1962 | |
Type and origin | |
Power type | Electric |
Builder | Toshiba |
Build date | 1962 - 1963 |
Total produced | 22 |
Specifications | |
UIC classification | Bo-Bo |
Gauge | 1,067 mm (3 ft 6 in) |
Bogies | DT119B |
Wheel diameter | 1,120 mm (3 ft 8 in) |
Length | 14,400 mm (47 ft 3 in) |
Width | 2,805 mm (9 ft 2.4 in) |
Height | 4,260 mm (14 ft 0 in) |
Locomotive weight | 67.2 t |
Electric system(s) | 20 kV AC, 60 Hz |
Current collection method | overhead wire |
Traction motors | MT52 |
Performance figures | |
Power output | 1,900 kW |
Career | |
Operator(s) | JNR |
Number(s) | ED73 1–22, ED73 1001–1022 |
Locale | Kyushu |
Delivered | 1962 |
First run | 1962 |
Preserved | 0 |
The Class ED73 (ED73形) was a Bo-Bo wheel arrangement AC electric locomotive type operated by Japanese National Railways (JNR) in Kyushu, Japan, between 1962 and the 1980s.[1]
Design
The Class ED73 design was broadly derived from the Class ED72 locomotives introduced a year earlier, but as the Class ED73 was primarily intended for use on freight services, it did not include a steam generator for 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
A total of 22 locomotives were built by Toshiba between 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The class was withdrawn by the early 1980s.[1] No examples of the class have been preserved.[3]
See also
References
Wikimedia Commons has media related to JNR ED73. |
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Inoue, Kōichi (1999). 国鉄機関車辞典 [JNR Locomotive Encyclopedia]. Japan: Sankaido. pp. 140–141. ISBN 4-381-10338-6.
- ↑ 2.0 2.1 Tezuka, Kazuyuki (January 1963). "交流電気機関車ED731" [AC electric locomotive ED73 1]. Japan Railfan Magazine (in Japanese) (Japan: Koyusha Co., Ltd.) 3 (19): p.14.
- ↑ Sasada, Masahiro (September 2012). 国鉄&JR保存車大全 [JNR & JR Preserved Rolling Stock Complete Guide]. Tokyo, Japan: Ikaros Publications Ltd. p. 126. ISBN 978-4863206175.
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