ET05 / 121

 

14884

 

ET05-R009 from the CTL fleet, photographed in Gdynia on April 24, 2010. Photo by Marek Dąbrowski (thanks for permission!).

 

ET05_1

 

Class 122 is a direct derivative of earlier 121. This Czech 122.007-8 was photographed in Petrovice on March 9, 2010.

 

 

Slovakian 121 077-2 (Škoda 4100/1960), photographed in Czarnolesie on August 19, 2005, probably shortly before repainting. This locomotive served with CTL Logistics as ET05-R002 and was offered for sale as scrap in April 2014. The other loco is 140 074-7. Photo from my collection.

 

 

 

 

 

 

 

 

 

Starting from 2005, various Polish private operators obtained over 100 second-hand electric locomotives from Czech Republic and Slovakia. Most of them were ČD/ŽSSK classes 181 and 182 (Co’Co’), built by Škoda and known in their homeland under the nickname ‘Šestikolák’, or six-wheeler. Smaller numbers of four-axle locomotives have also been impressed into service, including elderly class 121.

Its origin may be traced in the first license agreement, signed by Škoda with Schweizerische Lokomotiv- und Maschinenfabrik of Winterthur and Société Anonyme des Ateliers de Sécheron of Genéve, which materialized in ČSD class E 499.0 (later class 140, deliveries starting in 1953). It was later developed into class E 499.1 (141), which differed mainly in truck, suspension and transmission details; its export variant served for many years with PKP as EU05/EP05. In 1960, a dedicated freight variant was designed, ballasted up to 88 tonnes and with gear reduction ratio increased from 2.27 to 3.11 – these changes resulted in maximum tractive effort increase from 11.6 to 16.0 tonnes, but axle load increased to 22 tonnes. Maximum speed was reduced from 120 to 90 km/h. Prototype was rebuilt from E 499.157 and re-numbered E 469.001 (in the 1970s it was brought back to the original variant). After various minor improvements, concerning mainly transmission and suspension, this locomotive went into production as class E 469.1 (later 121, factory type 43E1), 85 examples being built for ČSD between 1960 and 1961. Traction motors and electric installation were almost identical with their predecessors; in some locomotives of this type indigenous Škoda-Chadži transmission was used instead of the original Sécheron type. This type was later developed into classes E 469.2 (122) and E 469.3 (123), differing in details – externally they could be easily distinguished by twin headlights, similar to that of 181s and 182s.

In 2000 Czech and Slovakian railways still had 49 and 13 locomotives of this type, respectively. Currently ČD has only six examples, all based in Ústi nad Labem, which has been the home of Czech 121s for many years. As for ŽSSK, this class, commonly nicknamed ‘Skuter’, or scooter, was declared surplus and all except for 121.004-6 were sold between 2005 and 2006 to Polish private operator CTL (Chem Trans Logistic Holding Polska S.A.). First two, 121.040-0 and 121.077-2, arrived in March 2005 and the last one, 121.007-9, in August 2006. After overhauls at the Žilina repairs works in Slovakia, these locomotives were transferred to Polish works in Gdańsk or Oleśnica, to be fitted with equipment demanded by relevant regulations. All were impressed into service with CTL as ET05-R001 through R012; class designation – perhaps intentionally – is consistent with that of EU05/EP05, in fact its close relative. Given their age, it is hardly surprising that their service was in some cases quite short. Until May 2010 seven had been withdrawn and only one (ET05-R006) was actually operated by Transoda with its original Slovakian service number 121.038-4. This engine was transferred to Rail Polska in April 2013 and after a few months, in January 2014, changed its owner again, this time to Czech CZ Loko. Withdrawn ET05s were initially offered for sale, but only ET05-R003 was sold back to Slovakia in 2010. At the time of writing (May 2014) withdrawn ET05-R001 and ET05-R004 were still kept at the CTL Logistics depot. All remaining locomotives of this type were offered for sale as scrap in April 2014.

According to SK, in March 2009 two Czech locomotives of this type, 121.016-0 and 121.029-3, withdrawn before 2005, were transferred to the Oleśnica repair works. Information on their ultimate fate is lacking.


 

Main technical data

 

No.

Parameter

Unit

Value

1.

Years of manufacture

-

1960 – 1961

2.

Total built / used in Poland

-

85 / 121)

3.

Axle arrangement

-

Bo’Bo

4.

Control

-

individual

5.

Design maximum speed

km/h

120

6.

Traction motors (number X type)

-

4 X 4AL4846ZT

7.

Voltage

V

3000

8.

One-hour rating

kW/hp

2344 / 3188

9.

Continuous rating

kW/hp

2032 / 2764

10.

Electric current at one-hour rating

A

360

11.

Electric current at continuous rating

A

350

12.

Rotational speed at one-hour rating

rpm

900

13.

Rotational speed at continuous rating

rpm

920

14.

Engine suspension

-

Sécheron

15.

Reduction gear ratio

-

3.11

16.

Diameter of drivers

mm

1250

17.

Total weight

kg

88 000

18.

Axle load

T

22.0

19.

Axle base

mm

11 500

20.

Overall length

mm

16 1402)

21.

Maximum width

mm

2 950

22.

Brake type

-

Oerlikon

 

1)      Until late 2006.

2)      16 800 mm in three examples.

 

References and acknowledgments

 

-       AV vol.1, MAL, AL;

-       SK, various issues;

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