Here's pics of our current range of Electric locomotives. Starting from the 5E series up to the 2001 18E, which is converted from the well-trusted 6E series, and is still in testing.

Most Electric locomotives listed run on 3000 Volts DC, and a couple on 25 000 Volts AC.
Check these below photos taken and processed by
**Francois Kritzinger**:

The 5E series electric locos are still quite commonly used, although older of the current range. It uses four electric traction motors driving 8 wheels, with a gearing ratio of 18/67, giving a powerful top speed of 97 km/h, quite safely suitable for our narrow gauge rails. Here's some general specifications:

Class Series

5E1

Loco Numbers

E921-E1145

Year in Service

1966-1969

Starting Tractive force

250kN

Continuous Tractive force

122kN@40km/h

Total Motor Rating (qty)

1940kW (4)

Gear Ratio

18/67

Max. Speed

97km/h

The 6E/6E1 Electric locomotive is currently the most commonly used, easily audibly recognized by it's high-pitched cooling fans keeping the 4 traction motors cool. The 6E units are more powerful then the 5E's, and have the same 18/67 gearing ratio, but a better top speed of 113 km/h. Here's some general info:

Rail Gauge

1 067mm

Height lowered pantograph

4 089mm

Axle configuration

Bo-Bo (Double-double)

Max height

2 896mm

Total mass

88 904 Kg

Wheel diameter (new)

1 220mm

Supply system

3 kV DC (3000 V)

Max Speed

115 km/h

Length between couplers

15 494mm

Bogie wheel base

3 430mm

Bogie centres

7 849mm

Starting tractive effort

311 kN

Continuous tractive effort

193 kN @ 40 km/h

The 7E electric locomotive is also quite commonly used today. Unfortunately I don't have a photo of the 7E. The major difference is that this unit runs on 25000 Volts alternating current as opposed to the usual 3000 Volts direct current. Here's some more technical info:

Axle classification

Co-Co (Tripple-tripple)

Tractive effort at driving wheel rim at one-hour rating

319 kN

Rail Gauge

1 067mm

Continuous rating at nominal motor voltage

2 925 kW

Supply system

25 kV, 1~50 Hz

Speed at continuous rating

35 km/h

Length between coupler centres

18 465mm

Tractive effort at driving wheel rim at continuous rating

300 kN

Distance between bogie centres

10 200mm

Max starting tractive effort at driving wheel rim

450 kN

Wheelbase of bogies

2 x 2200mm

Speed at continuous rating (full weak field)

70 km/h

Max height with lowered pantographs

4 200mm

Tractive effort at driving wheel rim at continuous rating (full weak field)

150 kN

Max width

2 896mm

Max braking effort at driving wheel rim

210 kN

Driving wheel diameter (new)

1 220mm

At speed

29 km/h

Gear ratio

5,85:1

Max speed

100 km/h

Total mass

123,6 tons

Mass of fully equipped pair of bogies

54,9 tons

Mass of fully equipped body

68,7 tons

Axle load

20,6 tons

One hour rating at nominal motor voltage

3 012 kW

Speed at one hour rating

34 km/h

1st year of commissioning

1978

Number of locomotives delivered

100

The 8E electric locomotive is a different design to the others, with a mid-cab design, it is used for shunting purposes. Here's some more jargon for you:

Type of service

Shunting

Tractive effort at driving wheel rim at continuous rating

145,3 kN

Axle classification

Bo-Bo

Max starting tractive effort at driving wheel rim

287,6 kN

Rail Gauge

1 065mm

Max service speed

55 km/h

Supply system

3 000 V DC

1st year of commissioning

1983

Length between coupler centres

16 120mm

Number of loco's

100 (S.A. transport serices)

7 (Mining companies)

Wheelbase of bogies

3 280mm

Development & supply of electrical portion

Siemens & BBC Brown

Max height with lowered pantographs

4 140mm

Mechanical body designer & manufacturer

Union Carriage & Wagon

Max width

3 040mm

Driving wheel diameter (new)

1 220mm

Gear ratio

6,75:1

Total mass

82 tons

Mass of fully equipped pair of bogies

34,2 tons

Mass of fully equipped body

47,8 tons

Axle load

20,5 tons

Continuous rating at nominal motor voltage

687 kW

Speed at continuous rating

17 km/h

The 9E electric locomotives are the most powerful in the range (unfortunately no photos), and are used in the Saldanha Bay region to haul those long iron ore trains along the coast. They run on 50000 Volts alternating current on lines only in the Saldanha region. The longest train in SA was recorded with 9 9E units and 3 diesel-electric locos pulling over 600 iron ore filled trucks weighing 105 tons each, with the total train around 7.3 km long and weighing around 17000 tons overall! Here's some more info

Rail Gauge

1 067mm

Wheel diameter (new)

1 220mm

Axle configuration

Co-Co

Max Speed

90 km/h

Total mass

166 tons

Nominal voltage

50 kV, 50 Hz

Supply system

50 kV AC

Power at continuous tractive effort

3 840 kW

Length over coupler faces

20 970mm

Max axle load

28 tons

Bogie centres

12 700mm

Max tractive effort

570 kN

Bogie wheelbase

3 940mm

Continuous tractive effort

383 kN

Height lowered pantograph

3 900mm

Max width

2 900mm

Main contractors

GEC Traction Ltd.

The 10E Electric locomotive is mainly used with freight trains, and is almost as common as the 6E1's, but is more powerful, but modestly geared for a max speed of around 100 km/h. These units also have tripple bogies, thus 12 drive wheels with 6 traction motors in total, the same as the 7E and 9E. Here's some more info:

Type of service

Freight

Wheel diamter (new)

1220mm

Rail Gauge

1067mm

Max speed

100 km/h

Axle configuration

Co-Co

Continuous rating

3000 kW

Total mass

124,7 tons

Starting tractive effort

450 kN (37% adhesion)

Supply system

3 kV DC

Continuous tractive effort

310 kN (25% adhesion)

Length between coupler centres

18 500mm

Braking effort

175 kN from 15 to 45 kph

Bogie centres

9 400mm

Max braking effort

2187 kN from 45 to 100 kph

Height lowered pantograph

4 140mm

Max width

2 906mm

The 14E Electric locomotives are mostly used with high speed long distance freight trains. They were introduced by SAR, now SpoorNet, in 1990. Here's some more specs:

Type of service

Fast freight

Wheel diameter (new/worn)

1250/1170mm

Axle arrangement

Bo-Bo

Minimum radius of track curve

85m

Supply systems

25 kV, 50 Hz/3 kV DC

Axle load

24,35 tons

Rail Gauge

1 065mm

Total mass in working order

97 tons

Distance between coupler centres

9300mm

Mass of body fully equipped

61 tons

Overall wheel base

12 400mm

Mass of fully equipped bogie

18 tons

Bogie wheel base

3100mm

Starting tractive effort with half worn wheels

369 kN

Max height with lowered pantographs

4120mm

Continuous tractive effort (4000 kW)

245 kN at 58,6 km/h

Width over body panels

2973mm

Tractive effort at max speed

110 kN at 130 km/h

Max speed

130 km/h

Max braking effort (2900 kW)

172 kN between 12 & 60,5 km/h

The 18E series, the latest electric locomotive going to be utilized by SpoorNet is actually a direct modification from the popular 6E1 units. In 2001, many 6E1 units were converted to 18E specifications, and are still undergoing major testing. I'm not sure exactly what changes are being made, but I do know that major upgrades were done to the traction motors and other important electronics, as well as Toilet facilities adapted on board for the drivers. I don't have any technical specs yet.

>In the late 1980's they did a top speed test by altering the gearing ratio on the 6E1 unit and got a excellent top end of 245 km/h with one wagon in towe.

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