EP20 (ЭП20-003) dual-system electric passenger locomotive of Russian Railways hauls ChS200 DC electric locomotive

            EP20 is equipped by the 3 power bogies produced by the NEVZ itself and presumably developed on the base of the FLEXX Power 140 RU locomotive bogie designed by Bombardie. 
The bogie suspension system is consisted of coil primary suspension with a one-sided, wear-free wheelset guidance, and flexicoil secondary suspension (the support of the carbody on the bogie) realised by wear free secondary coil springs equipeed with anti-hunting and anti-rocking dampers; according to flexicoil principle the bogie on the coils can be freely deflected into vertical and horizontal directions. Tractive forces from bogie to locomotive are transferred via traction rods connected to a low lying connection at the bogie pivot centre. Mechanical braking is realized by the wheel mounted disc brakes. Electric braking is either up to 4.5MW rheostatic braking via roof mounted resistors, or up to 7.2MW regenerative braking.

The EP20 (ЭП20) is a type of 6 axle Bo'Bo'Bo' dual-system electric passenger locomotive being built from 2011 y for Russian Railways by the Novocherkassk Electric Locomotive Plant (as a part of the Transmashholding), the main electric locomotive developer and producer in Soviet Union and Russia. EP20 was designed  to replace of failed EP10 project by TRTrans, a joint venture between Transmashholding and Alstom by French, Belgian, and Russia based engineers to 2008 y. It is able to haul 24 coaches at 160 km/h or 17 coaches at 200 km/h and operate both on the DC and AC electrified tracks (3kV DC or 25 kV 50 Hz AC). Possibly for a first time for Russian locomotives, the cab design includes special progressive deformation steel cage for impact absorption. Due to extremal quantity of foreign components and thier high price a year production is not so big and now built 79+ from 200 of ordered.

Some specifications:
Loco weight -135 t
Power output: continuous - 6600 kW /hourly - 7200 kW, 
Tractive effort: 350 kN (0-74 km/h) 115 kN at 200 km/h
Motors: Bogie suspended six pole 1.2 MW (1,600 hp) asynchronous DTA-1200A with six IGBT traction converters
Transmission: Bogie mounted traction motors, via gear to hollow shaft drive, with flexible couplings
Loco brake:Rheostatic 4500 kW (DC)/ 3200 kW (AC), regenerative 6000 kW, electropneumatic wheel disc. 
(information from Wiki)
   

Taken in: Russia / Petrograd / Volkovo (show map)

Taken on: July 16, 2021

Tags:

EP20

ЭП20

ЭП20-003

electric passenger locomotive

RZD

Russian Railways

РЖД

electric locomotive

элект

CHS200

ЧС200-004

ЧС200

Škodovy zavody

Škoda Works

Škoda Transportation

Škoda « less

Sets appears in: • ChS200, ChS6 & ChS7 DC electric high-speed passenger locomotives • EP20 AC/DC high-speed passenger locomotive

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Camera: Pentax K-5, f/5.6, 1/640 sec, 50mm (=75mm), ISO 800 (more info) (hide info)

Camera:	Pentax K-5
Lens:	TAMRON AF 18-250mm F3.5-6.3 Di II LD Aspherical [IF] MACRO
Aperture:	f/5.6
Exposure Time:	0.002 sec (1/640)
Focal Length:	50mm (35mm equivalent: 75mm)
ISO:	800
Exposure Bias:	-1.3 EV
Flash:	Off, Did not fire
Exposure Program:	Manual
Exposure Mode:	Manual
Metering Mode:	Multi-segment
White Balance:	Auto
Sharpness:	Hard
Color Space:	Uncalibrated
Software:	Adobe Photoshop Camera Raw 12.4 (Windows)
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