Specifications
SL95 is a bidirectional, eight-axle articulated tram built exclusively for the Oslo Tramway by Ansaldo of Italy. The tram has three sections, with one bogie on the first and last section and two bogies on the center section. The body is in aluminum, with sections that are welded along the floor and roof, and bolted on the side, to ease replacement of dented sections. The trams are 33.12 meters (108.7 ft) long, 2.6 meters (8 ft 6 in) wide and 3.62 meters (11.9 ft) tall. The axle distance in the bogies is 1.80 meters (5 ft 11 in), and the distance between the bogie centers is 9.85 meters (32.3 ft) from the center to the end, and 5.17 meters (17.0 ft) between the two in the center. The tram weighs 64.2 tonnes (63.2 long tons; 70.8 short tons) empty, and 78.3 tonnes (77.1 long tons; 86.3 short tons) with payload.
Each of the four bogies have two three-phase asynchronous motors on a steel bogie with two axles. The wheels have a 680-millimeter (27 in) diameter when new and 610-millimeter (24 in) when fully worn. The axles are rubber-suspended against the bogies, while the bogies are air-suspended against the chassis. The motors are type MTA-F6-105V built by Ansaldo, and the eight motors have a total power output of 840 kilowatts (1,130 hp) at 750 V. This allows a maximum speed of 80 kilometres per hour (50 mph) and an acceleration of 1.5 meters per second squared (4.9 ft/s2). The vehicle can be reversed, but the speed is then automatically limited to 15 kilometres per hour (9.3 mph). While the tram operated with 600 V, it had power output of 672 kilowatts (901 hp).
The vehicles have three braking systems: a primary regenerative dynamic brake, a secondary disc brake and an emergency rail brake. When braking with the regenerative brake, the energy can be fed back to the overhead wires. The trams are dimensioned to operate an entire day with the dynamic brakes disconnected from one bogie, and for one hour if disconnected from two bogies, in which case only disc brakes will be used.
The trams are bidirectional, with a driver's cab at each end. These cabs are built so the motorman can also sell tickets. The cab's have a door to close them off, so the riders cannot access rear cab. There are four doors on both sides; the front door is single while the three back doors are double. In addition to the front door, there is one door in each section. To operate the doors on the left side, the motorman must engage a security switch. It is also possible to open each individual door on the right side from the driver's cab. Half the length is low-floor, with an entry height at 350 millimetres (14 in), including three of the four doors. There are 88 seats, of which 64 are on the high-floor section, giving a total capacity of 212 riders.
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