E7075 / E7006 / E7035 / E7042 / E7061 (dead) are Class 7E 25 kV AC locomotives built by Union Carriage and Wagon, which entered service in 1978. They are pictured here at De Aar (a town and important railway junction between Kimberley and Cape Town in the Northern Cape) with a load of 104 manganese wagon empties.
Classes 7E, 9E, 11E, 14E, 15E, 19E, 20E and 21E.
7E & 11E are 25kv AC locos. 9E & 15E are 50kv AC locos and the remainder are dual-voltage (25kv AC & 3kv DC).