The 3 kV DC Class 10E1, Series 1 electric locomotive was designed for the South African Railways by the General Electric Company and built by Union Carriage & Wagon in Nigel, Transvaal. GEC supplied the electrical equipment while UCW was responsible for the mechanical components and assembly. Fifty locomotives were delivered by UCW between 1987 and 1989, numbered in the range from to. 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.
Characteristics
The Class 10E1 was introduced as a new standard 3 kV DC heavy goods locomotive. With a continuous power rating of, 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.
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 network, with the ability to automatically change over to rheostatic braking whenever the overhead supply system becomes non-receptive.
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.
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 amongst train crews.
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 electro-diesel locomotives were sold to Maquarie-GETX and leased back to Spoornet for a ten-year period which was to expire in 2008. Of the Class 10E, Series 1, numbers to were included in this leasing deal.
Works numbers
The Class 10E1, Series 1 GEC works numbers are listed in the table.
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 era, several were repainted in the TFR red, green and yellow livery.
