EP08

 

 

 

EP08-001 in its original livery working a train from Warsaw to Lublin; location and date unknown. Photo by D. Adamovich (postcard from my collection).

 

EP08_1

 

EP08-001 again, photographed in Poznań on September 6, 2004 (later livery version)...

 

EP08_2

 

...and EP08-012, photographed on the same occasion.

 

 

Another picture of the EP08-012 taken almost thirteen years later, on May 18, 2017, at the Warszawa Wschodnia station.

 

EP08_13

 

Another picture of the EP08-001 in new PKP InterCity livery: probably at the end of a wearisome day. Warszawa Wschodnia station, February 24, 2010.

 

EP08_3

 

EP08-011, photographed at the same location on June 10, 2006.

 

EP08_15

 

The same location and the same locomotive, but in new PKP InterCity livery: October 12, 2011.

 

EP08_sc

 

EP08 side drawing by M.Ćwikła (SK vol.4/2001).

 

EP08_4

 

EP08-010 at the Warszawa Wschodnia station, September 19, 2006.

 

EP08_5

 

Another picture of the EP08-010, taken near the Warszawa Olszynka Grochowska depot on October 17, 2006...

 

EP08_7

 

...and yet another, this time near the Warszawa Zachodnia station; October 26, 2007.

 

EP08_6

 

EP08-007 in a new (and somehow surprising!) PKP  InterCity navy-blue livery; Warszawa Wschodnia station, August 24, 2007.

 

EP08_8

 

Another EP08 in new PKP InterCity livery: EP08-013, photographed at one of my favorite spots near Warszawa Zachodnia station on November 21, 2007.

 

EP08_9

 

EP08-013 approaching the Wrocław Główny station; photo taken on April 18, 2008.

 

EP08_14

 

The same locomotive photographed at the Warszawa Wschodnia station on August 18, 2010.

 

EP08_10

 

EP08-006, still in old livery. Warszawa Wschodnia station, April 29, 2008…

 

 

…and in the ultimate PKP InterCity livery: the same location, July 16, 2014.

 

EP08_11

 

EP08-009, Warszawa Olszynka Grochowska depot, July 10, 2008.

 

EP08_12

 

The same locomotive in new PKP InterCity livery; Warszawa Wschodnia station, May 28, 2009.

 

EP08_16

 

EP08-001, Warszawa Wschodnia station, April 17, 2013.

 

EP08_17

 

EP08-014, location and date unknown. Photo from my collection.

 

 

Warszawa Wschodnia again: EP08-011, June 21, 2017.

In late 1960s, in view of track upgrading on principal routes, it was decided to build electric locomotives for passenger traffic, capable of higher speed – 140 to 160 km/h. New machines were to be developed from those already in service – EU05 (supplied by Škoda in 1961) and EU07 (license-built variant of British EU06, built by Pafawag of Wrocław since 1964). Between 1971 and 1977, 27 EU05s (all machines then in service) were rebuilt to the EP05 standard, with reduction gear ratio changed from 84:37 to 77:44 and maximum speed increased from 125 km/h to 160 km/h. The last of them was withdrawn from service in May 2008.

High-speed variant of the EU07, designated EP08 (factory designation type 4Ea), had reduction gear ratio changed from 79:18 to 77:24, maximum speed being set at 160 km/h. Journal shaft bearings were retained, albeit with improved lubrication and additional oil pump fitted. Four examples (EP08-002 through 005) were supplied in late 1972; contrary to EP05, they were all new machines, not conversions. In early 1973, EP08-001 (factory designation type 102E) was delivered; this machine differed from its predecessors mainly in roller shaft bearings and slightly modified trucks. Tests immediately proved the latter variant to be superior (although running qualities at high speed still left something to be desired), but roller bearings had to be imported, so only ten further examples followed between 1975 and 1976. Externally they were almost identical with early production EU07s and differed mainly in orange and red livery. Their service speed was finally reduced to 140 km/h. Four EP08s with journal bearings were later rebuilt to the EU07 standard (becoming EU07-241 through 244, the last locomotives of this type from Pafawag) in 1976 and 1977.

Apart from EP08-015, which was written off after a serious crash in December 1994, all machines of this type still remained in service in late 1990s, based in Warsaw and Wrocław. Pending the introduction of modern EU11s, their withdrawal seemed inevitable, but only EP08-014 was in fact written off in 2000. After the entire EU11 program had collapsed (all locomotives of this type were finally sold to Italy and none saw service with PKP), it was decided to keep all remaining nine EP08s in use. Today they form a part of the PKP InterCity fleet and operate mainly between Warsaw and Poznań with express trains, but sometimes can be seen also on other principal routes. All are currently based in Warsaw. Together with two EP05s (finally withdrawn from use in 2007 and 2008) and 47 EP09s they made up a motley collection of express locomotives in the PKP InterCity service. In 2008 the company decided to purchase modern ES64U4 ‘Eurosprinter’ locomotives from Siemens.

 

Main technical data

 

No.

Parameter

Unit

Value

1.

Years of manufacture

-

1972 – 1976

2.

Total built / used in Poland

-

15 / 152)

3.

Axle arrangement

-

Bo’Bo

4.

Control

-

multiplied

5.

Design maximum speed

km/h

160 (1401))

6.

Traction motors (number X type)

-

4 X EE541c or EE541g

7.

Voltage

V

3000

8.

One-hour rating

kW/hp

2080 / 2825

9.

Continuous rating

kW/hp

2000 / 2720

10.

Electric current at one-hour rating

A

370

11.

Electric current at continuous rating

A

355

12.

Rotational speed at one-hour rating

rpm

920

13.

Rotational speed at continuous rating

rpm

940

14.

Engine suspension

-

Alsthom

15.

Reduction gear ratio

-

77:24

16.

Diameter of drivers

mm

1250

17.

Total weight

kg

80 000

18.

Axle load

T

20.0

19.

Axle base

mm

11 650

20.

Overall length

mm

15 915

21.

Maximum width

mm

2 890

22.

Brake type

-

Oerlikon

 

1)      Maximum service speed

2)    Between 1976 and 1977 EP08-002 do 005 with journal shaft bearings rebuilt to EU07-241 through 244.

 

References and acknowledgments

 

-        AL;

-        SK vol. 4/2001;

-        www.kolejowaklatka.org (website by Marek Dąbrowski).