PKP class EU20

Infobox Locomotive Auto
name = EU20
powertype = Electric

---

imagesize = 300px
caption = EU20-24 at the Warsaw Railway Museum, 2006.


caption2 =
designer =
builder = Lokomotivbau Elektrotechnische Werke (LEW) flagicon|DDR
serialnumber =
buildmodel =
builddate = 1955 - 1958
totalproduction = 34
uicclass = Co'Co'
gauge = RailGauge|sg
trucks =
length = convert|18.5|m|abbr=on
height =
width = convert|3.05|m|abbr=on
wheeldiameter = convert|1.35|m|abbr=on
weight = 120 t
electricsystem =
collectionmethod = pantograph
alternator =
generator =
tractionmotors = 6
transmission = 81:21
topspeed = convert|110|km/h|abbr=on
poweroutput = 2,520 kW
tractiveeffort =
factorofadhesion =
locobrakes = Knorr
trainbrakes =
safety =
railroad = PKP
officialname =
nicknames =
locale = flagicon|POL Poland

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

History

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

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

Operational History

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 EU20s were withdrawn over a 6 year period, beginning in 1976, with the last locomotive being withdrawn in 1981.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

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