EU07 and EP07

 

 

First example from Pafawag (EU07-001, s/n 1/1964) at Chabówka rolling stock heritage park, April 13, 2004

 

 

Over two years later things are not looking much better, but restoration seems to be under way: Chabówka, July 29, 2006.

 

 

EU07-027 at Stalowa Wola Rozwadów station, May 4, 2004

 

 

EU07-144 at Piotrków Trybunalski loco depot, October 29, 2001

 

 

EU07-114 with train 220 to Wrocław near Jaworzyna Śląska, August 4, 2004

 

 

EU07-408 near Warszawa Rembertów station, January 29, 2003

 

 

…EP07-344, photographed on the same occasion…

 

 

… and the same example in Ełk, August 1, 2004

 

 

EP07-522 near Warszawa Wawer station, August 8, 2002 (note rectangular headlights)

 

 

EP07-383 in Gdańsk, August 6, 2003 (as above)

 

 

EU07, early version from Pafawag; side drawing by M.Ćwikła (SK vol. 9/2002)

 

 

EU07 from Pafawag, later variant; source – as above

 

 

EU07, late version from HCP with some modifications; side drawing by M.Ćwikła (SK vol. 10/2002)

 

 

EP07-355, photographed near the Łódź Widzew station on April 10, 2005

 

 

EU07-112 at the Krotoszyn station, April 13, 2005

 

Several pictures taken at the Warszawa Wschodnia station can be seen here.

 

 

 

EP07-388, photographed near the Warszawa Zachodnia station, February 17, 2007.

 

 

EP07-332, photographed in Ełk on June 15, 2006...

 

 

...and EP07-345, photographed on the same occasion.

 

 

The same locomotive, photographed in Warsaw on October 14, 2008, in new PKP InterCity blue livery. 

 

 

Two EU07s, photographed near the Warszawa Olszynka Grochowska depot on July 11, 2006: EU07-325...

 

 

... and EU07-153.

 

 

EU07-318 with a passenger train arriving in Leszno on July 26, 2006.

 

 

Two EU07s, photographed at the Kraków Płaszów station on September 9, 2006: EU07-531...

 

 

...and slightly battered EU07-321; traces of yellow paint on the front panel are still visible.

 

 

Two locomotives photographed near Rogów station on November 22, 2006: EU07-124...

 

 

...and EU07-495.

 

 

EU07-367 passes by EP07-388; Warszawa Zachodnia, February 17, 2007.

 

 

Early production EU07-010, photographed in Kalwaria Zebrzydowska on May 3, 2007.

 

 

EP07-211, photographed near the Warszawa Olszynka Grochowska depot on July 26, 2007.

 

 

EU07-494, Gdynia Grabówek depot, August 23, 2007.

 

 

EP07-375, photographed near the Warszawa Zachodnia station on October 24, 2007.

 

 

Modernized EP07-1005 (ex EU07-352), photographed at one of my favorite spots near the Warszawa Zachodnia station on October 26, 2007. Note missing multiple control sockets. More photos from this location can be seen here.

 

 

Two more modernized locomotives: EP07-1035...

 

 ...and EP07-1043, both photographed at the Wrocław Główny station on April 18, 2008.

 

 

EU07-496, photographed somewhere in Poland in June 1995...

 

 

...and the same machine photographed after a crash on August 17, 1995. Both photos from my collection.

 

 

In 2008, modernized EP07-1051 (ex EU07-054) was externally made up as BR class 83 in the 1960s livery; photo taken in Wolsztyn on May 3, 2008.

 

 

Another picture of this locomotive, taken at the Wrocław Główny station in June 2008 by John Bryant (thanks for permission!).

 

 

Two locomotives, photographed at the Poznań Główny station on May 15, 2008: EU07-417...

 

 

...and modernized EP07-1002 (ex EU07-147).

 

 

EU07-127, photographed at the Gliwice station on June 15, 2008.

 

 

EU07-096, photographed in Węgliniec on July 16, 2008.

 

 

Modernized EP07-1053, photographed on the same occasion.

 

 

EP07-1055, photographed in Korsze on September 9, 2008. Electrified line ends there and eastbound trains are taken over by SU45s or SU46s.

 

 

EP07-1052, Olsztyn Główny station, September 12, 2008.

 

 

EP07-1018, photographed on the same occasion.

 

 

Three modernized EP07s, photographed at the Olsztyn depot on the same day.

 

Efforts to design and build electric locomotives for passenger and express trains in Poland after WWII were not entirely successful. EP02, which in fact was a derivative of pre-war EL.100 of British origin, had poor running qualities and was never considered wholly suitable for large-scale production; only eight examples were built and their service was comparatively short. Next electric passenger locomotives were imported from Sweden, East Germany, Czechoslovakia and UK.

In the meantime, indigenous (although based on Soviet VL22M) ET21 freight locomotive went into production at Pafawag (pre-war Linke-Hofmann) in Wrocław in 1957. This machine was considered successful and certainly paved the way for more advanced designs. It was, however, decided to build a license locomotive rather than develop an entirely new one. The choice fell on British EU06, of which twenty examples were delivered in 1961. From the very beginning it was stipulated that license agreement should follow immediately and until 1965 PKP should have received about 100 examples built in Wrocław under factory designation 4E. These plans turned out over-optimistic. First locomotive, with service number EU07-001, was rolled out in December 1964 and accepted for service tests in April 1965. Large-scale production started two years later.

Despite new service designation, EU07 did not differ much from British-built EU06 and had similar performance and appearance. Differences concerned mainly those items of equipment that had already been manufactured in Poland and thus were not covered by license agreement (such as compressors or heating devices). Service designation implies that this machine was suitable both for passenger and freight trains, but from the very beginning was seldom used for freight service. In fact, due to its introduction, it was possible in 1970 to withdraw ET21s from passenger traffic, for which they were certainly not well suited.

Production of EU07 at Pafawag lasted for about ten years and totaled 240 examples, the last of which was accepted by PKP in January 1975. Four more were rebuilt from EP08s in 1976 and 1977. Further deliveries were halted, as freight locomotives were more urgently needed: this may seem hard to explain, but in fact electrification did not progress as fast as previously planned and main effort was concentrated on principal trunk routes, where heavy freight traffic dominated. As Pafawag was then the sole producer of electric locomotives in Poland, they had to shift to ET22, which in fact owed something to EU07 (e.g. electric motors were of the same type).

Alternative to electrification was sought in diesel locomotives and PKP acquired over 1800 heavy road diesels, mostly from the USSR (class ST44). However, due to drastic increase of fuel prices, this policy had to be revised and in 1981 it was decided to concentrate available resources on electrification – once again. As Pafawag was involved in the ET22 program, new passenger machines were to be built by HCP of Poznań. This large factory had not built electric locomotives before 1977, when ET41 made its appearance; this two-section heavy freighter had in fact been derived from EU07 and had the same electric engines. Original plans called for about 500 examples, but only 200 were built. Although HCP design bureau produced original designs of fast passenger locomotives, it soon became obvious that they had little chances to materialize, if any, especially after martial law introduction in Poland in December 1981, when import of certain items of equipment became impossible. It was therefore decided to revive the EU07 program, but on the basis of experience gained with the ET41. First example of the ‘new’ machine (factory designation 303E) was delivered in August 1983 – over eight years after the last EU07 from Pafawag. In PKP service, machines from HCP were given service numbers from EU07-301 onwards (last of the ‘old’ batch was EU07-244, rebuilt from EP08-003 and delivered in November 1977).

Machines from Poznań differed from earlier ones mainly internally. First of all, frame was redesigned in order to simplify manufacture, so new machines were longer by 320 mm and heavier by almost 3.5 tonnes. There were, of course, many differences concerning individual items of equipment. Wheelsets and engines were the same as in earlier examples. Externally, the easiest way to distinguish later machines from the earlier ones – apart from the service number – is the fact that EU07s from HCP had side walls made of riffled plates and larger pilots. Their production totaled 242 examples, the last of which – EU07-543 – was delivered in June 1992. Furthermore, three machines were rebuilt from damaged ET41s (EU07-537 from ET41-036B, EU07-544 from ET41-088A and EU07-545 from ET41-116A), so the grand total of this class is 489 machines: more than all other passenger electric locomotives in the PKP service combined.

In early 70s a special freight version for sand railways was designed, intended to replace obsolescent 3Es (equivalent to PKP class ET21); it had different current collectors and no car heating equipment. This variant was not proceeded with.

EU07s proved quite reliable in service, but soon it was found out that electric engines were prone to failures as a result of high rotational speed. It was thus decided to change the main gear reduction ratio from 79:18 to 76:21. Rebuilt machines were designated EP07 (service numbers retained) and 84 machines were rebuilt until 2004, including seven from Pafawag. This program still continues, but certainly is lagging behind schedules, as it was initially intended to convert over 200 EU07s until 2005. Until 2002, 57 machines were withdrawn due to accidents or physical wear.

Modifications of the basic design concerned mainly various items of equipment (dead man’s handle, improved electric circuit elements); in some examples, rectangular headlights were fitted.

Deliveries of EU07s covered over 27 years and, from statistical point of view, were moderate: about 18 examples per year. This cannot change the fact that they are the principal electric locomotives for passenger and express trains in Poland – and this will not change soon. When EU07-001 was rolled out from Pafawag for service tests in 1964, this machine could principally be considered modern; 27 years later, despite all modification, it certainly was not so. But all efforts to supply more advanced machines in fact failed. EP08 class (derived from EU07) numbered just fifteen machines; EP09, intended as a major step forward, was not an unequivocal success. EP23 was a failure, if not misunderstanding. EU11 and EU43 programs were terminated. Thus, if you travel through Poland on an electrified line, your train will most probably be hauled by a EU07 or EP07.

According to rosters quoted at www.szopa.glogow.pl, in October 2005 PKP had 91 EP07s and 336 EU07s in active service. One example was purchased by a private operator: EU07-125, built by Pafawag in 1970 and withdrawn in March 1998, was sold to PTKiGK Zabrze and remains in use, its designation changed to 4E-004. In fact this is one of very few machines of this type used for freight traffic and the only one owned by a private operator. In 2008, Koleje Mazowieckie (KM), which operate local trains around Warsaw, leased six EP07s from PKP Cargo to haul new push-pull-type drafts supplied by Bombardier. Further five are intended to follow in early 2009.

In late 2006, PKP Przewozy Regionalne (a company from the PKP group), who had taken over a number of EU07s and EP07s, launched a modernization program. Initial intentions were quite ambitious, including even air-conditioned crew compartments – or so it appears – but eventually, due to modest financing, the package has included mainly new main gears with reduction ratio changed from 79:18 to 76:21, to reduce engine rotational speed (as in EP07), and removing multiple-control installation. Minor modernizations have concerned controls, crew seating and windscreen wipers; some locomotives have also been fitted with new, rectangular headlights. Lack of multiple-control sockets on the front wall is the most characteristic external feature of modernized locos, apart from new cream-yellow/red livery which has not found much approval among railway fans (to put it mildly). Modernized EU07s are re-designated EP07 but, contrary to earlier practice, are assigned new service numbers from 1001 upwards. EP07-1001 (ex EU07-137) was rebuilt by the ZNTK (Railway Stock Repair Works) of Oleśnica and rolled out in June 2007. Further rebuilds are under way; according to some sources, two examples are to be modernized by Romanian RELOC company. Initial plans included a few dozen examples (some sources give 74), but several of them were found in such bad overall condition that they had to be written off.  Currently (May 2008) the highest service number known to me is EP07-1056. Despite their relatively low numerical force, ‘new’ EP07s have already become quite common.

 


Main technical data – EU07

 

No.

Parameter

Unit

Value

1.

Years of manufacture

-

1965 – 1974

1983 – 19922)

2.

Total built / used in Poland

-

240 + 41) + 2424) + 33) / 489

3.

Axle arrangement

-

Bo’Bo’

4.

Control

-

multiplied

5.

Design maximum speed

km/h

125

6.

Traction motors (number X type)

-

4 X EE541A

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

-

79:18

16.

Diameter of drivers

mm

1250

17.

Total weight

kg

80 000 / 83 4002)

18.

Axle load

T

20.00 / 20.852)

19.

Axle base

mm

11 600

20.

Overall length

mm

15 915 / 16 2352)

21.

Maximum width

mm

3 038

22.

Brake type

-

Westinghouse

 

1)      Rebuilt from EP08-002 to 005

2)      Second batch (HCP, type 303E) – based on ET41 

3)      Rebuilt from ET41-036B, ET41-088A and ET41-116A

4)     Second batch – some sources give 243 examples.

 

Main technical data – EP07

 

No.

Parameter

Unit

Value

1.

Years of manufacture

-

1995 –

(reconstruction of EU07)1)

2.

Total built / used in Poland

-

84/ 842)

3.

Axle arrangement

-

Bo’Bo’

4.

Control

-

multiplied

5.

Design maximum speed

km/h

125

6.

Traction motors (number X type)

-

4 X EE541b

or LKb5353)

7.

Voltage

V

3000

8.

One-hour rating

kW/hp

2080 / 2825

9.