JKOY Class Sm5
The Sm5 electric multiple unit (EMU) is a low-floor train used on the Helsinki commuter rail network. Unlike other train types on the network, the Sm5 units are owned by Pääkaupunkiseudun Junakalusto Oy, a subsidiary of the cities of Helsinki, Espoo, Vantaa and Kauniainen. The units are leased to the Helsinki Regional Transport Authority (HSL), and VR operates them.
| JKOY Class Sm5 | |
|---|---|
Sm5 unit at Tuomarila railway station. | |
The interior of an Sm5 unit. | |
| In service | 2009– |
| Manufacturer | Stadler Rail |
| Built at | Bussnang, Switzerland |
| Family name | FLIRT |
| Replaced | Sm1, Sm2 |
| Constructed | 2008–2017 |
| Number built | 81 |
| Number in service | 81 |
| Formation | 4-car sets |
| Fleet numbers | 94 10 2081 001–081 |
| Capacity | 583 |
| Operators | VR Group |
| Depots | Ilmala |
| Lines served | All Helsinki commuter rail lines |
| Specifications | |
| Car body construction | Aluminium |
| Train length | 75.2 m (246 ft 9 in) |
| Width | 3.2 m (10 ft 6 in) |
| Height | 4.4 m (14 ft 5 in) |
| Floor height | 600 mm (24 in) |
| Low-floor | 70% |
| Platform height | 550 mm (22 in) |
| Doors |
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| Wheel diameter |
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| Wheelbase |
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| Maximum speed | 160 km/h (99 mph) |
| Weight | 132 t (130 long tons; 146 short tons) |
| Axle load |
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| Traction system | ABB BORDLINE CC750 IGBT–VVVF |
| Traction motors | 4 × TSA TMF 59-39-4 500 kW (670 hp) |
| Power output | 2,000 kW (2,700 hp) |
| Transmission | Voith SZH-595 gearbox |
| Acceleration | 1.2 m/s2 (3.9 ft/s2) |
| Electric system(s) | 25 kV 50 Hz AC catenary |
| Current collector(s) | Pantograph |
| UIC classification | Bo′2′2′2′Bo′ |
| Safety system(s) | ATP-VR/RHK |
| Coupling system | Scharfenberg |
| Track gauge | 1,524 mm (5 ft) |
| Notes/references | |
| Sourced from except where noted. | |
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