RENFE series 7800
| RENFE series 7800 RENFE series 278 |
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|---|---|
.jpg) Renfe 278 007 on display in the Railway Museum of Catalonia
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| Numbering: | 7801-7829
278 001-278 029 |
| Number: | 29 |
| Manufacturer: | Westinghouse , SEC Naval |
| Year of construction (s): | 1954–1955 (20 pieces)
1959–1960 (9 pieces) |
| Axis formula : | Bo'Bo'Bo ' |
| Gauge : | 1668 mm |
| Length over buffers: | 20.1 m |
| Service mass: | 120 t |
| Wheel set mass : | 20 t |
| Top speed: | 110 km / h |
| Continuous output : | 2200 kW |
| Starting tractive effort: | 160 kN |
| Power system : | 3 kV DC |
| Power transmission: | Overhead line |
| Number of traction motors: | 6th |
| Drive: | Pawbearing drive |
| Train control : | ASFA |
The class 7800 (later class 278 ), in Spanish colloquial Panchorga (German: a portly woman ), is an electric locomotive developed for Renfe for freight train traffic from the 1950s.
commitment
The locomotives were procured to run the freight trains on the newly electrified routes in Andalusia , the lengthy repair of which had only just been completed by the damage caused by the Spanish Civil War . The series consisted of 29 locomotives, which were delivered in two series as the 7800 series: the first 20 units (7801-7820) in 1954 and 1955, and another 9 units (7821-7829) in 1959 and 1960. The second series was declared as aid from America and was a counter-deal for the right of the USA to be able to build military bases in Spain .
According to Renfe's new numbering, the locomotives became the 278 series.
The series was in service for forty years, the last run of a 278 took place on January 10, 1992 with the locomotive 278 020. Three locomotives of the series have been preserved, all of which are inoperable: locomotive 278 001 is in the Alcázar de San Juan , locomotive 278 007 is on display in the Railway Museum of Catalonia in Vilanova i la Geltrú and locomotive 278 009 is in the Museum of Railway Friends from Saragossa (AZAFT).
In contrast to the Co'Co 'express locomotives of the RENFE class 7600 that were purchased at the same time , the Panchorgas were never really convincing. They were particularly unpopular because of the high wear on the tracks, which was attributed to the middle bogie and the heavy weight of the locomotive.
technology
The 7800 series were the first locomotives with the Bo'Bo'Bo ' wheel arrangement in Spain, followed later by other locomotives with this wheel arrangement, the RENFE 251 series . The mechanical part was built by Sociedad Española de Construcción Naval , the shipyard of the Spanish Navy based on drawings by Baldwin , the electrical part came from Westinghouse .
The driver's cabs were equipped with the controls that are common in the USA. A compressor was housed in each of the front ends, and a hand pump was provided for lifting the pantographs when the locomotive was upgraded. The traction motors were controlled by series resistors. In the first 15 speed levels, all six drive motors were connected in series, then up to speed level 35 there was a parallel connection of three drive motors in series, with motors 1, 3 and 5, or 2, 4 and 6 being combined into one series. After speed level 35, two traction motors were connected in parallel in series, with traction motors 1 and 3, 2 and 5, as well as 4 and 6 each forming a series. The locomotives were equipped with a control for double traction , but this was rarely used operationally.
Web links
Individual evidence
- ↑ Panchorga. In: WikiRioja . Retrieved April 21, 2013 .
- ↑ 7800 "PANCHORGA". Mifer Trenes , accessed April 21, 2013 .
- ↑ La panchorga, homenaje a la locomotora 7800 Renfe. Retrieved April 21, 2013 .