ChS7
   HOME

TheInfoList



OR:

The ChS7 (russian: ЧС7) is an electric mainline DC passenger locomotive used in Russia and Ukraine. The locomotive consists of two sections (type 2(2O−2O)) and was produced in years 1983 to 1999 at
Škoda Škoda means ''pity'' in the Czech and Slovak languages. It may also refer to: Czech brands and enterprises * Škoda Auto, automobile and previously bicycle manufacturer in Mladá Boleslav ** Škoda Motorsport, the division of Škoda Auto respons ...
's V.I. Lenin plant in
Plzeň Plzeň (; German and English: Pilsen, in German ) is a city in the Czech Republic. About west of Prague in western Bohemia, it is the Statutory city (Czech Republic), fourth most populous city in the Czech Republic with about 169,000 inhabita ...
,
Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...
. It was specially developed for the railways of
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...
with later models procured by Russian and Ukrainian operators. Along with ChS8, the Chs7 is one of the most powerful electric locomotives used in the countries of the former
USSR The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...
.


Premise for the appearance

By the early 1980s the ridership on the Soviet Railways strongly increased. It was required to increase the number of passenger trains, but this was prevented by an excessively huge freight traffic and an inability to increase the capacity of passenger trains due to the weight the Soviet locomotives of the time could pull. In order to be able to pull passenger trains with more than 30 cars, strong and powerful electric locomotives were required. The backbone of the Soviet Railways at the time, consisting out of the
ChS2 The ChS2 russian: ЧС2 is an electric mainline DC passenger locomotive used in Russia and Ukraine. It was manufactured by the Škoda Works in Czechoslovakia between 1958 and 1973. Gallery File:Electric_passenger_locomotive_chs2-023_(1).jpg, C ...
(DC) and ChS4 (AC) electric locomotives, as well as of VL60p (passenger version of VL60), didn't suit these needs. The power of those electric locomotives was in the 4200–5100 kW range, while their traction force did not exceed 17400 kg. This was not enough for pulling 30-car passenger trains. In addition their design developed back in the 1950s became obsolete. It is worth to mention that, ChS2 control scheme provided the capability of using two units in a Multiple-unit train control mode. However, there were several limitations - e.g. missing capability to restore traction engine protection of "slave" locomotive from leading locomotive. Eventually the multiple unit mode was used only extremely rarely. * Since 1971—1972 V. I. Lenin plant in
Plzeň Plzeň (; German and English: Pilsen, in German ) is a city in the Czech Republic. About west of Prague in western Bohemia, it is the Statutory city (Czech Republic), fourth most populous city in the Czech Republic with about 169,000 inhabita ...
started to produce various modifications of ChS2T and ChS4T locomotives. In comparison to their prototypes, those locos were different by a better design, in addition ChS2T was even stronger than its prototype; however their traction force was not sufficient. * Besides, starting with the second half of the 1970s the party of ChS6 8-axle DC electric locomotives were in use on Oktyabrskaya Railway. These electric locomotives were created on basis of high speed Chs200 locos by means of changing the transition number of traction reductors, while the total power of their engines were 8400 kW. * However these electric locomotives were not appropriate for pulling heavyweight passenger trainsв, since the dis-congruence between traction engine power and chain weight (164 tons) did not allow to increase the traction force significantly. IN additions Chs6 locos had only two economical speeds 2 which made their speed range, yet limited. This fashion, their construction required further improvements * This is the way the Škoda plant in
Czechoslovakia , rue, Чеськословеньско, , yi, טשעכאסלאוואקיי, , common_name = Czechoslovakia , life_span = 1918–19391945–1992 , p1 = Austria-Hungary , image_p1 ...
(formerly V. I. Lenin plant) in 1980s received an order for building strong and powerful passenger electric locomotives, which were able to pull trains composed of 32 passenger cars.


Production

For a purpose of driving heavy train, by the early 1980s Škoda plant projected universal AC/DC 8-axle locomotive. (Refer to ChS8). They were designated for pulling trains along the hard-to-pass profiles. For the purpose of projecting new electric DC locomotive, ChS6 and ChS200 features were used as a basis; as compared with these two projects, Chs7 featured several modifications.


See also

* The Museum of the Moscow Railway, at Paveletsky Rail Terminal,
Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million ...
*
Rizhsky Rail Terminal Rizhsky station (russian: Рижский вокзал, ''Rizhsky vokzal'', Riga station) is one of the nine main railway stations in Moscow, Russia. It was built in 1901. As well as being an active station it also houses the Moscow Railway Museum ...
, Home of the Moscow Railway Museum *
Varshavsky Rail Terminal Varshavsky station (russian: Варша́вский вокза́л, ''Varshavsky vokzal''), or Warsaw station, is a former passenger railway station in Saint Petersburg, Russia. It is located to the south of the city centre, and was in operation ...
,
Saint Petersburg Saint Petersburg ( rus, links=no, Санкт-Петербург, a=Ru-Sankt Peterburg Leningrad Petrograd Piter.ogg, r=Sankt-Peterburg, p=ˈsankt pʲɪtʲɪrˈburk), formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), i ...
, Home of the Central Museum of Railway Transport, Russia * History of rail transport in Russia


References

{{Rolling stock of Russia Electric locomotives of Russia Electric locomotives of the Soviet Union 3000 V DC locomotives 5 ft gauge locomotives Railway locomotives introduced in 1983