South African Class 10E1, Series 1

Electric locomotive

13,460 mm (44 ft 1+7⁄8 in) • Bogie4,060 mm (13 ft 3+7⁄8 in)Pivot centres10,200 mm (33 ft 5+5⁄8 in)Panto shoes12,000 mm (39 ft 4+1⁄2 in)Length:
• Over couplers18,520 mm (60 ft 9+1⁄8 in) • Over body17,506 mm (57 ft 5+1⁄4 in)Width2,906 mm (9 ft 6+3⁄8 in)Height:
• Pantograph4,120 mm (13 ft 6+1⁄4 in) • Body height3,945 mm (12 ft 11+3⁄8 in)Axle load21,210 kg (46,760 lb)Adhesive weight126,000 kg (278,000 lb)Loco weight126,000 kg (278,000 lb)Electric system/s3 kV DC catenaryCurrent pickup(s)PantographsTraction motorsSix GEC G425AZ • Rating 1 hour540 kW (720 hp) • Continuous515 kW (691 hp)Gear ratio17:87Loco brakeAir, Regenerative & RheostaticTrain brakesAir & VacuumCouplersAAR knuckle

Performance figures
Maximum speed	90 km/h (56 mph)
Power output:
• 1 hour	3,240 kW (4,340 hp)
• Continuous	3,090 kW (4,140 hp)
Tractive effort:
• Starting	450 kN (100,000 lbf)
• 1 hour	335 kN (75,000 lbf)
• Continuous	310 kN (70,000 lbf) @ 35 km/h (22 mph)
Brakeforce	175 kN (39,000 lbf) @ 15–45 km/h (9–28 mph) 2,187 kN (492,000 lbf) @ 45–100 km/h (28–62 mph)

Career
Operators	South African Railways Spoornet Transnet Freight Rail
Class	Class 10E1
Number in class	50
Numbers	10-051 to 10-100
Nicknames	Broodblik (Breadbin)
Delivered	1987-1989
First run	1987

The South African Railways Class 10E1, Series 1 of 1987 is an electric locomotive.

Between 1987 and 1989, the South African Railways placed fifty Class 10E1, Series 1 electric locomotives with a Co-Co wheel arrangement in mainline service as a new standard heavy goods locomotive.^[1]

Manufacturer

The 3 kV DC Class 10E1, Series 1 electric locomotive was designed for the South African Railways (SAR) by the General Electric Company (GEC) and built by Union Carriage & Wagon (UCW) in Nigel, Transvaal. GEC supplied the electrical equipment while UCW was responsible for the mechanical components and assembly.^[2]^[3]

Fifty locomotives were delivered by UCW between 1987 and 1989, numbered in the range from 10-051 to 10-100. Contrary to prior UCW practice, GEC works numbers were allocated to the Class 10E1 locomotives. With the exception of the Class 9E, also a UCW-built GEC-designed locomotive, UCW did not allocate builder’s numbers to previous locomotives it built for the SAR, but used the SAR unit numbers for their record keeping.^[1]^[4]

Characteristics

The Class 10E1 was introduced as a new standard 3 kV DC heavy goods locomotive. With a continuous power rating of 3,090 kilowatts (4,140 horsepower), four Class 10E1 locomotives were capable of performing the same work as six Class 6E1. The entire fleet of Class 10E1 electric locomotives uses electronic chopper control which is smoother in comparison to the rheostatic resistance control that was used in the Classes 1E to 6E1 range of electric locomotives.^[2]^[5]

Brakes

The locomotive makes use of either regenerative or rheostatic braking, as the situation demands. Both traction and electric braking power are continuously variable with the electric braking optimised to such an extent that maximum use will be made of the regenerative braking capacity of the 3 kV DC network, with the ability to automatically change over to rheostatic braking whenever the overhead supply system becomes non-receptive.^[2]^[6]

Bogies

The Class 10E1 was built with sophisticated traction linkages on the bogies. Together with the locomotive's electronic wheel-slip detection system, these traction struts, mounted between the linkages on the bogies and the locomotive body and colloquially referred to as grasshopper legs, ensure the maximum transfer of power to the rails without causing wheel-slip by reducing the adhesion of the leading bogie and increasing that of the trailing bogie by as much as 15% upon starting off.^[2]

Orientation

This dual cab locomotive has a roof access ladder on one side only, immediately to the right of the cab access door. The roof access ladder end is marked as the no. 2 end. In visual appearance, the Series 1 and Series 2 locomotives are virtually indistinguishable from each other. Their shape earned them the nickname broodblikke (breadbins) amongst train crews.^[1]^[7]

Service

Most of the Class 10E1 locomotives were placed in service at Nelspruit and Ermelo in Mpumalanga. In 1998, a number of Spoornet’s electric locomotives and most of their Class 38-000 electro-diesel locomotives were sold to Maquarie-GETX (General Electric Financing) and leased back to Spoornet for a ten-year period which was to expire in 2008. Of the Class 10E, Series 1, numbers 10-062 to 10-100 were included in this leasing deal.^[4]^[7]

Works numbers

The Class 10E1, Series 1 GEC works numbers are listed in the table.^[4]

**Class 10E1, Series 1**
Loco no.	Works no.
10-051	5659
10-052	5660
10-053	5661
10-054	5662
10-055	5663
10-056	5664
10-057	5665
10-058	5666
10-059	5667
10-060	5668
10-061	5669
10-062	5670
10-063	5671
10-064	5672
10-065	5673
10-066	5674
10-067	5675
10-068	5676
10-069	5677
10-070	5678
10-071	5679
10-072	5680
10-073	5681
10-074	5682
10-075	5683
10-076	5684
10-077	5685
10-078	5686
10-079	5687
10-080	5688
10-081	5689
10-082	5690
10-083	5691
10-084	5692
10-085	5693
10-086	5694
10-087	5695
10-088	5696
10-089	5697
10-090	5698
10-091	5699
10-092	5700
10-093	5701
10-094	5702
10-095	5703
10-096	5704
10-097	5705
10-098	5706
10-099	5707
10-100	5708

Liveries

All the Class 10E1, Series 1 locomotives were delivered in the SAR red oxide livery with signal red buffer beams and cowcatchers and a yellow V stripe on the ends, folded over to a horizontal stripe below the side windows. The number plates on the sides were mounted without the traditional three-stripe yellow wings. In the late 1990s many were repainted in the Spoornet blue livery with outline numbers on the long hood sides and with a yellow and blue chevron pattern on the buffer beams and cowcatchers. After 2008 in the Transnet Freight Rail (TFR) era, several were repainted in the TFR red, green and yellow livery.^[8]

Illustration

No. 10-075 in Spoornet blue livery with outline numbers, Sentrarand, Gauteng, 8 October 2009
No. 10-078, now inscribed E10078, in Transnet Freight Rail livery at Pyramid South, Pretoria, 14 May 2013

References

^ ^a ^b ^c South African Railways Index and Diagrams Electric and Diesel Locomotives, 610mm and 1065mm Gauges, Ref LXD 14/1/100/20, 28 January 1975, as amended
^ ^a ^b ^c ^d Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 132–133. ISBN 0869772112.
^ "UCW - Electric locomotives" (PDF). The UCW Partnership. Archived from the original (PDF) on 12 October 2007. Retrieved 30 September 2010.
^ ^a ^b ^c Middleton, John N. (2002). Railways of Southern Africa Locomotive Guide - 2002 (as amended by Combined Amendment List 4, January 2009) (2nd, Dec 2002 ed.). Herts, England: Beyer-Garratt Publications. pp. 50–52, 59–60.
^ Jane's Train Recognition Guide
^ Class 10E1 – Principle (sic) Dimensions and Technical Data (TFR leaflet used in driver training, circa 2010)
^ ^a ^b Soul of A Railway, System 7, Western Transvaal, based in Johannesburg, Part 21: Witbank Line by Les Pivnic, Eugene Armer, Peter Stow and Peter Micenko. Captions 35-36. Archived 24 October 2020 at the Wayback Machine (Accessed on 4 May 2017)
^ Soul of A Railway, System 7, Western Transvaal, based in Johannesburg, Part 9. South-Eastwards as far as Volksrust (2nd part) by Les Pivnic. Caption 4. Archived 24 July 2021 at the Wayback Machine (Accessed on 11 April 2017)

External links

Media related to South African Class 10E1 Series 1 at Wikimedia Commons

Locomotives of South Africa

Steam

7' ¼" gauge	East London 0-4-0VB Table Bay 0-4-0ST Table Bay 0-4-0T Table Bay 0-4-0WT
Standard gauge	Cape 0-4-0T Blackie Cape 0-4-2 Cape 2-4-0T CGR 0-4-0ST Aid Natal 0-4-0ST Durban Natal 0-4-0WT Natal Natal 4-4-0T Perseverance
Cape gauge Tank engines	CGR 0-4-0ST 1873 CGR 0-4-0ST 1874 CGR 0-4-0ST 1881 CGR 0-4-0ST 1881 Coffee Pot CGR 0-6-0ST CGR 0-6-0T CGR 2-6-0ST 1900 CGR 2-6-0ST 1902 CGR 1st Class 0-4-0ST 1875 CGR 1st Class 0-4-0ST 1876 CGR 1st Class 2-6-0ST CGR 1st Class 4-4-0T CGR 2nd Class 4-4-0T CGR 3rd Class 2-6-0T CGR Railmotor CSAR Class C CSAR Class E CSAR Rack 4-6-4RT CSAR Railmotor Durban's Congella Durban's Edward Innes Durban's John Milne Durban's Sir Albert Port Elizabeth 0-4-0ST Kowie Railway 0-6-0T Kowie Railway 4-4-0T Metropolitan & Suburban 4-6-2T NGR 2-6-0T Durban & Pietermaritzburg NGR Class I 2-6-2T NGR Class K 0-4-0ST NGR Class K 0-6-0ST NGR Class K 2-6-0T NZASM 10 Tonner NZASM 13 Tonner NZASM 14 Tonner NZASM 18 Tonner NZASM 19 Tonner NZASM 32 Tonner NZASM 40 Tonner PPR 26 Tonner PPR 35 Tonner Portuguese SAR Class A SAR Class B SAR Class C SAR Class C1 SAR Class C2 SAR Class D SAR Class E SAR Class F SAR Class G SAR Class H SAR Class H1 SAR Class H2 SAR Class J SAR Class K SAR Railmotor SAR Dock 0-4-0ST SAR Dock 0-4-0T SWA 2-8-0T
Cape gauge Tender engines	CGR 1st Class 2-6-0 1876 BP CGR 1st Class 2-6-0 1876 Kitson CGR 1st Class 2-6-0 1879 CGR 1st Class 2-6-0 1891 CGR 1st Class 4-4-0 CGR 1st Class 4-4-0TT CGR 2nd Class 2-6-2TT CGR 3rd Class 4-4-0 1883 CGR 3rd Class 4-4-0 1884 CGR 3rd Class 4-4-0 1889 CGR 3rd Class 4-4-0 1898 CGR 3rd Class 4-4-0 1901 CGR 3rd Class 4-4-0 1903 CGR 4th Class 4-4-2 CGR 4th Class 4-6-0TT 1880 CGR 4th Class 4-6-0TT 1882 CGR 4th Class 4-6-0TT 1882 Joy CGR 4th Class 4-6-0TT 1884 CGR 5th Class 4-6-0 1890 CGR 5th Class 4-6-0 1891 NGR Havelock NGR Class I SAR Class Exp 1 SAR Class Exp 2 SAR Class Exp 3 SAR Class Exp 4 SAR Class Exp 5 SAR Class Exp 6 SAR Class S SAR Class S1 SAR Class S2 SAR Class 1 SAR Class 1A SAR Class 1B SAR Class 2 SAR Class 2C SAR Class 3 SAR Class 3A SAR Class 3B SAR Class 4 SAR Class 4A SAR Class 5 SAR Class 5A SAR Class 5B SAR Class 6 SAR Class 6A SAR Class 6B SAR Class 6C SAR Class 6D SAR Class 6E SAR Class 6F SAR Class 6G SAR Class 6H SAR Class 6J SAR Class 6K SAR Class 6L SAR Class 6Y SAR Class 6Z SAR Class 7 SAR Class 7A SAR Class 7B SAR Class 7C SAR Class 7D SAR Class 7E SAR Class 7F SAR Class 8 SAR Class 8A SAR Class 8B SAR Class 8C SAR Class 8D SAR Class 8E SAR Class 8F SAR Class 8R SAR Class 8X SAR Class 8Y SAR Class 8Z SAR Class 9 SAR Class 10 SAR Class 10A SAR Class 10B SAR Class 10C SAR Class 10D SAR Class 11 SAR Class 12 SAR Class 12A SAR Class 12B SAR Class 13 SAR Class 14 SAR Class 14A SAR Class 14B SAR Class 14C 1st SAR Class 14C 2nd SAR Class 14C 3rd SAR Class 14C 4th SAR Class 15 SAR Class 15A SAR Class 15B SAR Class 15C SAR Class 15CA SAR Class 15E SAR Class 15F SAR Class 16 SAR Class 16A SAR Class 16B SAR Class 16C SAR Class 16D SAR Class 16DA 1928 SAR Class 16DA 1930 SAR Class 16E SAR Class 17 SAR Class 18 SAR Class 19 SAR Class 19A SAR Class 19B SAR Class 19C SAR Class 19D SAR Class 20 SAR Class 21 SAR Class 23 SAR Class 24 SAR Class 25 SAR Class 25NC SAR Class 26 SAR Katanga SWA 2-8-0
Cape gauge Articulated engines	CGR Fairlie CGR Kitson-Meyer SAR Class FC SAR Class FD SAR Class GA SAR Class GB SAR Class GC SAR Class GCA SAR Class GD SAR Class GDA SAR Class GE SAR Class GEA SAR Class GF SAR Class GG SAR Class GH SAR Class GK SAR Class GL SAR Class GM SAR Class GMA SAR Class GO SAR Class HF SAR Class KM SAR Class MA SAR Class MB SAR Class MC SAR Class MC1 SAR Class MD SAR Class ME SAR Class MF SAR Class MG SAR Class MH SAR Class MJ SAR Class MJ1 SAR Class U
2' 6" gauge	Cape Copper John King & Miner Cape Copper Britannia Cape Copper Caledonia Cape Copper Clara Cape Copper Condenser Cape Copper Scotia Namaqua Copper Pioneer Walvis Bay 2-4-2T Hope
2' & 600mm gauges	ACR Class NG-G16A CGR NG 0-4-0T CGR NG 0-6-0T CGR NG 4-6-2T CGR Type A 2-6-4T CGR Type C 0-4-0T NGR Class N 4-6-2T SAR Dutton SAR NG 0-4-0T SAR Class NG1 SAR Class NG2 SAR Class NG3 SAR Class NG4 SAR Class NG5 SAR Class NG6 SAR Class NG7 SAR Class NG8 SAR Class NG9 SAR Class NG10 SAR Class NG-G11 SAR Class NG-G12 SAR Class NG-G13 SAR Class NG-G14 SAR Class NG15 SAR Class NG-G16 SWA Class Ha SWA Class Hb SWA Class Hc SWA Class Hd SWA Jung SWA Zwillinge

Electric

Amcoal Class E38

Gas-electric

SAR Gas-electric

Diesel

Cape gauge Diesel-electric	PRASA Class Afro 4000 SAR Class DS SAR Class DS1 SAR Class 31-000 SAR Class 32-000 SAR Class 32-200 SAR Class 33-000 SAR Class 33-200 SAR Class 33-400 SAR Class 34-000 SAR Class 34-200 SAR Class 34-400 SAR Class 34-500 SAR Class 34-600 SAR Class 34-800 SAR Class 34-900 SAR Class 35-000 SAR Class 35-200 SAR Class 35-400 SAR Class 35-600 TFR Class 35-800 SAR Class 36-000 SAR Class 36-200 SAR Class 37-000 Spoornet Class 39-000 TFR Class 39-200 TFR Class 43-000 TFR Class 44-000 TFR Class 45-000
2' gauge Diesel-electric	SAR Class 91-000
Cape gauge Diesel-hydraulic	SAR Class 61-000
Cape gauge Electro-diesel	Spoornet Class 38-000

General Electric Company

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Products

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