The 50 kV AC Class 9E, Series 2 electric locomotive was designed for the South African Railways by the General Electric Company and was built by Union Carriage & Wagon in Nigel, Transvaal. GEC works numbers were allocated to Class 9E locomotives. UCW delivered six locomotives in 1982 and 1983, numbered in the range from E9026 to E9031.
Characteristics
The locomotive has a single full width air conditioned cab. At the rear end, the body work is lower to provide clearance for the 50 kV AC electrical equipment which is mounted on the roof. This consists of a single pantograph, a potential divider, a vacuum circuit breaker, a surge diverter and the main transformer’s high voltage terminal. The electrical control system is solid state, using thyristors. Since huge voltage drops are often encountered between electric sub-stations, the locomotive was designed to be able to operate on a supply varying between 55 and 25 kV AC. The battery boxes and the main air reservoirs are mounted between the bogies underneath the frame, where a compartment also houses a small motor scooter for use by the crew for lineside inspections of the train, which can be up to nearly long. Series 2 locomotives were delivered with five braking systems; air brakes for the locomotive, train air braking, train vacuum braking, a handbrake and dynamic rheostatic braking which can dissipate. The Series 1 locomotives were delivered without a vacuum brake system. By 2007, the entire fleet of both series of Class 9E electric locomotives were upgraded with Alstom's Agate train control and communication technology. The pantographs on most of these locomotives were also replaced by the single arm type. The Series 1 and Series 2 Class 9Es can be visually distinguished from each other by their bogies, which were redesigned for the Series 2 locomotives.
Service
Class 9E locomotives are used on the Sishen-Saldanha iron ore line to haul export ore from the open cast iron mines at Sishen in the Northern Cape to the harbour at Saldanha in the Western Cape. Most of the route is across the hot and dry Northern Cape, but the last to Saldanha runs parallel to the Atlantic coastline and is subjected to the fog and corrosive sea air of the West Coast.
Liveries
The whole series was delivered in the SAR red oxide livery with signal red cowcatchers, yellow whiskers and with the number plates on the sides mounted on three-stripe yellow wings. In the late 1990s they were all repainted in the Spoornet blue livery with either solid or outline numbers on the sides.
