VR Class Sr1

VR class Sr1 NEVZ VL70 (НЭВЗ ВЛ70) NEVZ ES40 (НЭВЗ ЭС40)
VR Class Sr1 number 3043 at Kouvola station in 2011
Type and origin Power type Electric Builder Novocherkassk Electric Locomotive Plant, VR Hyvinkää Machine Workshops Škoda Electric, Strömberg Build date 1971, 1973–1985, 1993, 1995 Total produced 112
Specifications Configuration: ​  • AAR B-B  • UIC Bo′Bo′ Gauge 1,524 mm (5 ft) Wheel diameter 1,250 mm (49.21 in) Length 18.96 m (62 ft 2+1⁄2 in) Loco weight 84 tonnes (83 long tons; 93 short tons) Electric system/s 25 kV 50 Hz AC catenary Current pickup(s) Pantograph
Performance figures Maximum speed 140 km/h (87 mph) Power output 3,100 kW (4,160 hp) Tractive effort 280 kN (62,900 lbf)
Career Operators VR Number in class 110 in use First run 1973–1996 Disposition Still in service, planned retirement from 2019

The Sr1 is a class of electric locomotives built for VR of Finland. These 25 kV locomotives were built in the Soviet Union at the Novocherkassk Electric Locomotive Factory between 1973 and 1985. Two additional locomotives of this class were built at the VR Hyvinkää Machine Workshop in 1993 and 1995, number 3111 from spare parts and number 3112 from the original prototype locomotive (number 3000) that was never used by the VR.^[1] The official classification given by the manufacturer is VL70 or ES40.

The nicknames for these locomotives are "Siperian susi" (Wolf of Siberia; in Finnish slang "susi" can also mean a poorly manufactured object, compare English "dog" or "lemon"),^[1] "Kaalihäkki" (Cabbage Cage)^[1] and "Sähköryssä" (Electric Russkie).