CP Class 2550

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CP Class 2550
Areia Estação da Somincor, 2009.04.01.jpg
Two Série 2550 locomotives hauling a freight train
Type and origin
Power type Electric
Builder Groupement d'Étude d'Électrification Monophasé 50Hz
Build date 1963-1964
Total produced 20
 • Whyte Bo-Bo
 • UIC Bo'Bo'
Gauge 1,668 mm (5 ft 5 2132 in) Iberian gauge
Wheel diameter 1,300 mm (51 in)
Length 15.38 m (50 ft 5.5 in)
Width 3.00 m (9 ft 10.1 in)
Height 4.45 m (14 ft 7.2 in)
Loco weight 72.0 t (70.9 long tons; 79.4 short tons)
Electric system(s) 25 kV 50 Hz AC Catenary
Current source Pantograph
Traction motors 709 hp (529 kW) Alstom TAO-645 A1, 4 off
Train heating None
Loco brake Air
Train brakes Air
Safety systems Convel
Performance figures
Maximum speed 120 km/h (75 mph)
Power output 2,790 hp (2,080 kW)
Tractive effort 191 kN (43,000 lbf)
Operators Comboios de Portugal
Numbers 2551-2570
Retired 2009
Disposition One preserved, remainder scrapped

Série 2550 were the second batch of 25 kV electric locomotives built for Portuguese Railways (CP). They entered service in 1964 and were used on the main line between Lisbon and Oporto. 20 locomotives were built; as of 2012 none remain in service.[1] Unlike the earlier Série 2500, the Série 2550 were built with unpainted stainless steel bodywork. They were constructed by Sorefame, with components from the French company Alsthom.

The Série 4700 were built in 2007-2009 as a replacement for the Série 2550.