SNCF Class BB 15000
Encyclopedia
The SNCF
SNCF
The SNCF , is France's national state-owned railway company. SNCF operates the country's national rail services, including the TGV, France's high-speed rail network...

 class BB 15000 is a class of 25kV 50Hz electric locomotive
Electric locomotive
An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or an on-board energy storage device...

s built by Alsthom and MTE between 1971 and 1978. Initially 65 locomotives strong, the series was widely used on the whole French 25kV network before losing services to TGV trains when the LGV Est
LGV Est
The LGV Est européenne is an extension to the French high-speed rail network, connecting currently Vaires-sur-Marne and Baudrecourt , and later Vaires-sur-Marne and Vendenheim . , it is the newest high-speed line in France and still under construction, with of a planned in service...

 went into service in 2007.

History

In the mid-1960s, SNCF sought a new type of dual-current electric locomotives. As thyristor technology advanced rapidly, SNCF decided to adopt the new technology for a new series of locomotives, later known as the "Nez Cassés (Broken Noses, due to their cab styling)" or "BB 4400kW". Given that the need for pure AC-locomotives was greatest, SNCF placed an initial order of five locomotives in 1968. In 1969 a second order of 10 locomotives followed, in 1970 a third order was made for another 10 locomotives. The remaining 40 locomotives were ordered in 1973.

The first five locomotives were delivered in 1971 in the overall-green "Maurienne" livery. The rest followed between 1973 and 1978, painted in the striking TEE-Arzens livery. Initially meant to support BB16000
SNCF Class BB 16000
The SNCF BB 16000 are a class of 25kv 50Hz AC electric locomotives produced by MTE. They are the AC version of the BB 9200s A total of 62 were originally built between 1959 and 1963, although some have since been withdrawn. 15 BB 16000s were reclassified as BB 16100s after fitment of TDM control...

 locomotives on eastern and northeastern lines, which could not keep up with the timetables anymore after top speed on some sections was raised to 160 km/h, the BB15000 series would become the most important locomotives on the northern and northeast network.

1970s-2007

After being tested on the Paris
Paris
Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

-Épernay
Épernay
Épernay is a commune in the Marne department in northern France. Épernay is located some 130 km north-east of Paris on the main line of the Eastern railway to Strasbourg...

 main line in 1971, they went into commercial service from 1972. They ran mostly on the northeastern network where they pulled nearly all the passenger trains, including the famous international TEE trains "Kléber" and "Stanislas". Some services extended to the northwest, with workings to Lille, Calais and the Belgian border (Quévy).

Services remained stable throughout the 1970s and 1980s, but the opening of the Ligne-a-Grande-Vitesse Nord in 1993 started a cascade of assignments in which the BB15000's lost services to either dual-voltage BB26000
SNCF Class BB 26000
The SNCF BB 26000 locomotives are a class of dual voltage, four axle B'B' electric locomotives capable of a top speed of 200 km/h built by GEC Alsthom between 1988 and 1998 for SNCF...

 locomotives or to TGV
TGV
The TGV is France's high-speed rail service, currently operated by SNCF Voyages, the long-distance rail branch of SNCF, the French national rail operator....

 trains. Yet BB15000 locomotives remained strong in the northeast and pulled strongly promoted Corail Téoz services between Paris and Strasbourg from 2003 until mid-2005, when half of the loco-hauled services were converted to TGV trainsets, albeit still running on the classic line. In mid-2006 the remainder were also converted into TGV services, leaving only some TER trains for the Lorraine and Alsace regions, and the EuroCity
EuroCity
EuroCity, abbreviated EC, denotes an international train service within the European inter-city rail network. In contrast to trains with the "IC" label, "EC" trains are international trains that meet certain criteria. The EuroCity label replaces the older Trans Europ Express name for...

 trains between Basel and Brussels (loco change at Luxemburg) or Paris and Frankfurt (loco change at Strasbourg).

The opening of the LGV Est
LGV Est
The LGV Est européenne is an extension to the French high-speed rail network, connecting currently Vaires-sur-Marne and Baudrecourt , and later Vaires-sur-Marne and Vendenheim . , it is the newest high-speed line in France and still under construction, with of a planned in service...

 in June 2007 ment the end of classic locomotive-hauled Intercity trains between Paris and the northeastern regions, with BB15000 locomotives losing a great deal of importance there.

2007-present

Although the end of locomotive-hauled Intercity trains in the northeast was a mayor step back, it didn't mean the end for the class.
The remaining 60 locomotives are divided over the following three sectors:
  • Twelve locomotives are allocated to SNCF-VFE and work Basel-Luxemburg EuroCity
    EuroCity
    EuroCity, abbreviated EC, denotes an international train service within the European inter-city rail network. In contrast to trains with the "IC" label, "EC" trains are international trains that meet certain criteria. The EuroCity label replaces the older Trans Europ Express name for...

     services, as well as DB AutoZug
    DB NachtZug
    City Night Line is a category of night trains in Europe. They were originally operated by the former railway company CityNightLine AG...

    's night train from Paris-Nord to the Belgian border. These locomotives are fitted with the Memor II+ safety system which enables them to operate to Luxemburg. These locomotives are numbered in the 115000 series.

  • Twenty-eight locomotives are allocated to SNCF-CIC (Corail Intercité) and are working medium to long distance regional services between Paris and Amiens/Maubeuge on the one end, and Paris-Caen/Deauville/Le Havre on the other end. Twelve locomotives of this sub-series, called BB215000R (from "Réversible"), are fitted with MUX which enables them to work in push-pull with the Corail
    Corail
    Corail is a French word which means coral.It may also refer to:*Corail, Grand'Anse, municipality in southwestern Haiti*Corail Arrondissement, arrondissement in southwestern Haiti*Corail , SNCF service train...

     B6Dux driving trailers and will be replacing BB216000
    SNCF Class BB 16000
    The SNCF BB 16000 are a class of 25kv 50Hz AC electric locomotives produced by MTE. They are the AC version of the BB 9200s A total of 62 were originally built between 1959 and 1963, although some have since been withdrawn. 15 BB 16000s were reclassified as BB 16100s after fitment of TDM control...

     locomotives there. This sub-series is numbered in the 215000 series.

  • Twenty locomotives are allocated to SNCF-TER Champagne-Ardennes, Haute-Normandie and Picardie, working fast TER services and replacing the remaining BB516000
    SNCF Class BB 16000
    The SNCF BB 16000 are a class of 25kv 50Hz AC electric locomotives produced by MTE. They are the AC version of the BB 9200s A total of 62 were originally built between 1959 and 1963, although some have since been withdrawn. 15 BB 16000s were reclassified as BB 16100s after fitment of TDM control...

     locomotives. Fifteen locomotives of this sub-series, called BB515000R, are fitted with MUX in able to operate in push-pull mode with V2N driving trailers on Paris-Rouen (Haute-Normandie) and Paris-Amiens (Picardie) and will be replacing BB516100
    SNCF Class BB 16100
    The SNCF Class BB 16100 electric locomotives were converted from class BB 16000s by fitting TDM push-pull equipment to work the Paris Nord to St...

     locomotives there. This sub-series is numbered in the 515000 series.

Technology

The locomotive's shell is shared with the other members of the "Nez Cassé" (broken nose) family (BB7200, BB22200) and is of the monocoque type.

The cabin is shared with the BB7200 and BB22200 series and have even a great deal in common with cabs of other SNCF locomotives of the 1960s. This class was also the first to introduce the VI ("Vitesse Imposée") cruise control
Cruise control
Cruise control is a system that automatically controls the speed of a motor vehicle. The system takes over the throttle of the car to maintain a steady speed as set by the driver.-History:...

 system which is now standard on all SNCF locomotives delivered after 1971.

The electrical part consists of a single pantograph (type AM18U) which collects 25kV from the catenary. Power is passed through a transformer which lowers the tension to about 1500V AC and a bridge rectifier controlled by thrystors rectify it into DC, which is then fed into the traction motors.

Brake equipment consists of pneumatic, electro-pneumatic, regenerative and dynamic brakes. Bogies were derived from the Y217 bogies of BB67400
SNCF Class BB 67400
The SNCF Class BB 67400 diesel locomotives were built by Brissonneau and Lotz between 1969-1975. They can be found working all over France on both freight and passenger trains....

 locomotives and have primary (coil springs) and secondary ("sandwich" blocs) suspension.

The reliability of the locomotives is outstanding, as some locomotives have already passed the 10,000,000 km mark and have less than 2 defects per million kilometres, a number unrivaled by other similar European locomotives.

Liveries

BB15000 locomotives have carried five different liveries:
  • The green "Maurienne" livery (so called because CC6500 locomotives also wore this livery and operated in the French Maurienne region) was worn by locomotives BB15000 - BB15005 between their delivery and 1982, when they were repainted into the TEE-Arzens livery.

  • The TEE-Arzens livery was worn by locomotives from number BB15006 onwards by delivery; the first five green locomotives were also repainted in this livery in 1982. There were two variants of this livery: the original livery which consisted of silver, red and orange, and the modified one where the silver was replaced with opaque gray. Nowadays a number of locomotives still wear the original livery, the others having another one listed below.

  • The "béton" (lit. concrete) livery, which was the standard livery of BB7200 and BB22200 locomotives, was tested on locomotives BB15034 and BB15040 in 1986-87 but was considered a failure as the locomotives got dirty too fast.

  • The "Multiservices" livery (former known as Corail+, as on the coaches) was introduced in 1995 on BB15016 and consisted of two shades of gray, silver and red. Nearly half of the class was painted in this livery by 2002, when the new "en voyage..." livery was introduced on the series.

  • The "en voyage..." livery is the latest livery of the class. Introduced on BB15063 in 2002, it consists of silver, purple on cab side 1 and cyan on cab side 2, and the "en voyage..." sticker with stylish motifs. All locomotives due for a major overhaul will be repainted in this livery.

The experimental nature of the class

BB15000 locomotives were popular locomotives for conducting various experiments. A small overview:
  • Already in 1972 BB15001 was used for testing a potential speed raise to 200 km/h on the Paris-Strasbourg main line (sections Épernay - Châlons-sur-Marne, Vitry-le-François - Bar-le-Duc and Lunéville - Sarrebourg). While the locomotive had no technical difficulties at those speeds, the project was not continued due to the enormous cost of the infrastructure works which had to be undertaken.

  • In 1973 BB15008 was used to test communication interferences on the now defunct Überherrn-Wadgassen line in Germany, exceptionally fed with 25kV at that time.

  • In 1974 BB15007 was taken out of service and transformed into BB7003, the prototype for the BB7200 locomotives. See SNCF Class BB 7003.

  • In 1976 BB15015 was tested on the Marseille-Nice main line in order to prepare the line for the arrival of the similar, but bicurrent BB22200 locomotives.

  • In 1977 BB15041 drove special demonstration rides between Épernay and Châlons-sur-Marne at 200 km/h for Amtrak executives, in order to convince them to buy a locomotive based on this design rather than the Swedish-based AEM-7. Eventually six-axle locomotive CC21003 was rebuilt to US standards and sent to the United States instead.

  • In 1978 BB15012 received the lower-geared bogies of locomotive BB22201 and was tested on various lines with heavy freight trains with weights up to 2200 tons, in order to test the performances against BB22000 locomotives.

  • In 1979 BB15063 was equipped with the bogies of BB7248 which had a modified secondary suspension for operating in the Middle East. The Iranian Railways were interested in purchasing a locomotive class based on the BB15000 design. BB15063 was tested with heavy trains up to 2000 tonnes on various 25kV lines. BB15063 retains these special bogies even today.

  • In 1979 BB15030 was used for stability tests in the Marne valley region at speeds up to 230 km/h.

  • In 1980, a BB15000 locomotive pulled middle cars of a TGV Sud-Est trainset at high speeds in preparation of their services on the LGV Sud-Est.

  • Later that year, BB15008 was sent to the Rail Tec Arsenal climatic test chamber in Vienna for thermal tests up to -30°C.

  • In 1981 locomotives BB15049 and BB15059 were used for testing the behaviour of the AM18U pantographs at high speeds in tunnels, related to use in the then-unbuilt Channel Tunnel.

  • In 1982 BB15055 receives synchronous motors. Later that year it is renumbered BB10004. See SNCF Class BB 10004.

  • Also in 1982 BB15056 received a bimotor bogie with motors similar to the ones used in TGV Sud-Est sets.

  • In 1983 BB7003 (original BB15007) is transformed into BB10003, a test-bed locomotive for asynchronous motors. See SNCF Class BB 10003
    SNCF Class BB 10003
    The locomotive SNCF BB 10003 was an experimental prototype locomotive converted from a SNCF BB 15000 unit and used to develop the use of asynchronous induction traction motors.-History:...

    .

  • In 1989 BB10004 was restored to its original configuration and taken back into service with its original number, BB15055.

  • In 1997 BB10003 was restored to its original configuration and taken back into service with its original number, BB15007.

External links

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