TCDD E8000

The TCDD E8000 is a three-car electric multiple unit operated by the Turkish State Railways (TCDD) on the Istanbul suburban service. The units were some of the first electric trains using the newly developed 25 kV 50 Hz AC power system.[1]

TCDD E8000
TCDD E8000 unit E8030 at Istanbul Sirkeci station in February 2008
In service1955–2011
ManufacturerAlstom
Jeumont
De Dietrich Ferroviaire
Number built28 units
Formation3 cars
Operator(s)Turkish State Railways
Line(s) servedIstanbul suburban
Specifications
Train length68,000 mm (223 ft 1 in)
Maximum speed90 km/h (56 mph)
Weight120 t (120 long tons; 130 short tons)
Axle load17.5 t (17.2 long tons; 19.3 short tons)
Power output1,100 kW (1,475 hp)
Electric system(s)25 kV 50 Hz AC
Track gauge1,435 mm (4 ft 8 1⁄2 in)

Technical specifications

The trains are equipped with conventional transformers and camshaft-controlled step switches. They have a power output of 1,100 kW (1,475 hp) and a maximum speed of 90 km/h (56 mph).[1]

History

A total of 28 units were built by French manufacturers Alstom, Jeumont and De Dietrich Ferroviaire, with deliveries beginning in 1955.[1] They were used on the newly electrified European commuter train service in Istanbul. After the Asian side electrification, the trains also served there. The trains were lengthened to four cars with locally manufactured intermediate cars. Those intermediate cars were later withdrawn.[1]

The original livery was in dark-red and white. On 1 September 2010 the arrival of new trains was cut in 2011 after waiting for 6 months.

gollark: The combination of uniformly sized partitions and using the value on the "left" apparently causes bee.
gollark: https://math.stackexchange.com/questions/1803080/if-the-left-riemann-sum-of-a-function-converges-is-the-function-integrable
gollark: It seems to be if you use the WRONG version, is the thing.
gollark: Apparently, if you integrate the "characteristic function of the rational numbers" (1 if rational, 0 otherwise) from 0 to 1, you will attain 1, because x is always rational (because b - a is 1, and all the partitions are the same size), even though it should be 0.
gollark: For another thing, as I found out while reading a complaint by mathematicians about the use of Riemann integrals over gauge integrals, if you always take the point to "sample" as the left/right/center of each partition *and* the thing is evenly divided up into partitions, it's actually wrong in some circumstances.

References
  1. Ross, David (2005). Die internationale Enzyklopädie - Züge und Lokomotiven [The Encyclopedia of Trains and Locomotives] (in German). Translated by Lieb, Ulrich. Transpress Verlag. p. 431. ISBN 3-613-71266-0.
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