CURRENT SPOORNET ELECTRIC LOCOMOTIVES


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:

5E/5E1 ELECTRIC LOCOMOTIVE

5EThe 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


6E/6E1 ELECTRIC LOCOMOTIVE

6eThe 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


7E ELECTRIC LOCOMOTIVE

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


8E ELECTRIC LOCOMOTIVE

8eThe 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


9E ELECTRIC LOCOMOTIVE

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.


10E ELECTRIC LOCOMOTIVE

10eThe 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


14E ELECTRIC LOCOMOTIVE

14eThe 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


18E ELECTRIC LOCOMOTIVE

18eThe 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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