ŽS series 621

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ŽS series 621
ŽS 621 locomotive
Type and origin Power type Diesel-electric Builder Build date 2002 - 2006
Specifications Configuration: ​  • UIC Bo Gauge 1,435 mm (4 ft 8+1⁄2 in) Wheel diameter 1,050 mm (41.34 in) Length 9,450 mm (31 ft 0 in) Width 3,100 mm (10 ft 2 in) Loco weight 36.00 t (79,400 lb) Cylinders 16 Transmission Electric
Performance figures Maximum speed 80 km/h (50 mph) Power output 392 kW (530 hp) Tractive effort 108 kN (24,280 lbf)
Career Operators ŽS, ŽT RBK Class ŽS 621 Nicknames "Žutka", "Osica" and "Trafika" Locale Serbia

ŽS series 621 is a Serbian code for shunting Czech-made diesel-electric locomotive class on Serbian Railways. This class has nicknames "Žutka" (Yellow) and "Osica" (little wasp) as they were originally painted in yellow livery and "Trafika" (Newsstand).^[1][2]

History[]

Serbian Railway have bought first 621 series shunter locomotive in 2001. In 2005 year 22 more locomotives were introduced in service. Later two more second-hand shunters from Czech Republic industrial railways were bought. This series is originally ČMKS 709, series 621-100 is 709.401, 621-200 is 709.701 and 621-300 is 709.5. The Kolubara coal basin also bought 621 class locomotives for hauling lighter freight coal trains.

There are today 15 locomotives of this series operated by Serbian Railways and two operated by Rail transport of Kolubara coal basin. These locomotives are built for heavy shunting.

Livery[]

Locomotives have yellow livery. Last two 621-300 second-hand shunters from Czech Republic have blue-white livery and first bought locomotive has red-white livery. Two 621 series locomotives operated by Rail transport of Kolubara coal basin are painted in green-yellow-black livery.

In popular culture[]

The locomotive is seen in the train simulator game Derail Valley. The locomotive is classified as DE2 (Diesel-Electric 2) and is usable in the game after the player has completed the tutorial.

References[]

External links[]

• Diesel locomotives - Serbian Railways official web site
• Serbian Railways rolling stock

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