PKP class EW90

PKP class EW90

Infobox Locomotive
name = EW90
powertype = Electric



caption = EW90-12 in Skansen Parowozownia Kościerzyna.
builder =
serialnumber =
buildmodel =
builddate = 1924-1936
1938-1941
totalproduction =
whytetype =
aarwheels = s+d
engine car + trailer
uicclass =
gauge = 1 435 mm
leadingsize =
driversize = 900 mm
trailingsize =
wheelbase =
length = 34 460 mm
width =
height =
framesize =
weightondrivers =
weight =
locotenderweight =
fueltype =
fuelc

tenderc

consumption =
watercons =
electricsystem = 800 V.
collectionmethod = Pantograph
primemover =
enginetype = 4 x GBM700
aspiration =
displacement =
boiler =
boilerpressure =
feedwaterheater =
firearea =
tubearea =
fluearea =
tubesandflues =
fireboxarea =
totalsurface =
superheatertype =
superheaterarea =
cylindercount =
cylindersize =
rearcylindersize =
hpcylindersize =
lpcylindersize =
valvegear =
transmission = 68:16
topspeed = 80 km/h
poweroutput = 308 kW
tractiveeffort =
factorofadhesion =
locobrakes =
trainbrakes = Knorr EP
railroad = PKP
railroadclass = EW90
numinclass =
roadnumber =
officialname =
nicknames =
locale =
deliverydate =
firstrundate =
lastrundate =
retiredate = 1976
restoredate =
scrapdate =
currentowner =
disposition =|

EW90 is the name for a German ET 165 electric multiple unit working for Polish PKP.

History

In the period between 1928 and 1945 it serviced Berlin S-Bahn lines. After Second World War 54 units of this type were brought to Poland to service SKM line in Tricity. It was necessary to rebuilt cars to change power supply from third rail system into pantographs.EW90 EMUs finished their service in 1976 when power supply on SKM line changed from 800 V. into 3 000 V.

Technical data

Each unit consisted of two cars: engine car and trailer. It was possible to connect four units in order to gain eight car train.GBM-700 type electric engines used in EW90, EW91 and EW92 units have 4 main poles and 4 commutation poles. Two-step reduction of engine excitation (up to 50%)is made by short-circuit of parts of main poles. Engines cooling is made with a fan installed on engines' shafts.

Resources

#EW90 pictures gallery at [http://www.kolej.pl/jareks/pekape/htmls/ew90.htm Chester Home Page] , URL accessed on May 4, 2007.
#EW90, EW91 and EW92 information at [http://users.uj.edu.pl/~krslowik/kolej/ew91/ew91_01.htm users.uj.edu.pl] , URL accessed on May 4, 2007.

ee also

*Polish locomotives designation




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