ED4 (Electric trainset)

ED4 (Electric train Demikhovskiy 4-th modification) is a series of Russian electric trainsets, in production since 1996. The trains are produced by DMZ and currently in service on RZD lines in almost every part of the country and former USSR states.

ED4
ManufacturerDMZ
ReplacedER2
Constructedfrom 1996
Entered servicefrom 1997
Number built475 (as of August 2014)
Formation4, 6, 7, 8, 9, 10, 11, 12 cars
Operator(s)Russian Railways
Depot(s)3+
Line(s) served5+
Specifications
Car body constructionsteel, aluminium
Train length(4) 88.224 m (289 ft 5 3⁄8 in)
(6) 132.336 m (434 ft 2 1⁄8 in)
(7) 154.392 m (506 ft 6 3⁄8 in)
(8) 176.448 m (578 ft 10 3⁄4 in)
(9) 198.504 m (651 ft 3 1⁄8 in)
(10) 220.56 m (723 ft 7 1⁄2 in)
(11) 242.616 m (795 ft 11 3⁄4 in)
(12) 264.672 m (868 ft 4 1⁄8 in)
Car length22.056 m (72 ft 4 3⁄8 in)
Width3,522 mm (11 ft 6 5⁄8 in)
Height4,253 mm (13 ft 11 1⁄2 in)
Maximum speed130 km/h (81 mph)
Acceleration0.67 m/s2 (2.2 ft/s2)
Deceleration0.65 m/s2 (2.1 ft/s2)
Electric system(s)3 kV DC Catenary
Current collection methodPantograph
Coupling systemSA3
Track gauge1,520 mm (4 ft 11 27⁄32 in) Russian gauge

Production history

The ED4 was designed to accommodate Russia's need for a domestically produced electric train-set. Russia's most widely exploited electric trains, the ER1 and ER2 series, were produced by the Rīgas Vagonbūves Rūpnīca (RVR) plant in Latvia before the collapse of the USSR.

Design work began in 1996 on the basis of the earlier ED2 series, which were largely equipped with RVR components. Electronic equipment for the new train was manufactured by The Novocherkassk Electric Locomotive Plant, while the drive-train was built in Novosibirsk. ED4 train-cars are nearly identical to those used by both the ER29, and ED2T trains, differing mainly in having notably wider doors.

After successfully completing testing, the first train entered service at the Mineralnye Vody Depot of the North Caucasus Railway.

Only 5 trains carry the early ED4 identification, as the second variant, ED4M, began exclusive production thereafter. The main difference between the two trains is the equipment and shape of the operator's compartment.[1]

Four of the early ED4 trains are in currently in service on the Moscow Railway, one on the North Caucasian Railway, and one in Belgorod.[2]

Variants and modifications

ED4M

ED4M1

ED4MK

ED4MKu

ED4MKM

ED4MKM-AERO

Mechanically almost identical to the ED4MKM, these trains have an updated interior, modified for the needs of airport commuters. The AERO trains are in service in Moscow and St.Petersburg, serving the Domodedovo, Vnukovo, Sheremtyevo and Pulkovo airports, respectively. The modified door mechanisms of the AERO were used on all later ED4M trains.[3]

ED4E
gollark: It does at least have fixed-width instructions.
gollark: ARM's quite CISCy now too.
gollark: Alder Lake is finally actually on 10nm.
gollark: 11th gen at least has newer cores, so it should be better.
gollark: It doesn't help that 10th gen (Comet Lake) is just 6th gen (Skylake) overclocked a lot and with some exploit mitigations.

See also
  • The Museum of the Moscow Railway, at Paveletsky Rail Terminal, Moscow
  • Rizhsky Rail Terminal, Home of the Moscow Railway Museum
  • Varshavsky Rail Terminal, St.Petersburg, Home of the Central Museum of Railway Transport, Russian Federation
  • History of rail transport in Russia

References
  1. "Information about ED4". Archived from the original on 2 April 2015. Retrieved 25 August 2015.
  2. Service of ED4 in Russia
  3. Video
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