PKP class EU20

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EU20
EU-20.jpg
EU20-24 at the Warsaw Railway Museum, 2006.
Type and origin
Power type Electric
Builder Lokomotivbau Elektrotechnische Werke (LEW)
Build date 1955–1958
Total produced 34
Specifications
UIC class Co'Co'
Gauge 1,435 mm (4 ft 8 12 in)
Wheel diameter 1.35 m (4 ft 5 in)
Length 18.5 m (60 ft 8 in)
Width 3.05 m (10 ft 0 in)
Loco weight 120 tonnes (120 long tons; 130 short tons)
Current collection Pantograph
Traction motors 6 of, gear-ratio 81:21
Loco brake Knorr
Performance figures
Maximum speed 110 km/h (68 mph)
Power output 2,520 kW (3,380 hp)
Career
Operators PKP
Numbers EU20-01 to EU20-34
Retired 1976–81
Preserved EU20-24
Disposition One preserved, remainder scrapped

The EU20 is an East German standard gauge electric locomotive specially built for, and used by, the Polish national rail operator, PKP.

History[edit]

In production for a mere three years (1955–1958), the series was built at the Lokomotivbau Elektrotechnische Werke works — commonly shortened to LEW — in Hennigsdorf, East Germany. During this time, 34 units were produced with the intention for use as a mixed traffic locomotive – hence its EU designation – though the reality is that the EU20 saw more use as a freight locomotive than a passenger one. EU20s were the first electric locomotives to be used on the route between Warsaw and Silesia.

The class gained notoriety for its frequent breakdowns involving the overheating of resistors, due to the lack of additional cooling facilities found in other locomotives.

Technical data[edit]

Mechanically, the EU20 was identical to the earlier EU04 (also built by LEW), sharing the same traction engines, rectifiers, and gas compressors.

Operational history[edit]

During the series' 26-year service, most units were assigned to the Piotrków Trybunalski depot. EU20s were withdrawn over a 6-year period, beginning in 1976, with the last locomotive being withdrawn in 1981.

Current status[edit]

EU20-24 has been[when?] preserved as an exhibit at the Warsaw Railway Museum, and is the only surviving example from the series.