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South African Class 19E
No. 19-009, 19-054 and 19-067 at the Richards Bay Locomotive Depot, 8 December 2013
Type and origin Power type Electric Designer Mitsui Builder Union Carriage & Wagon Model Mitsui 19E Build date 2007-2011 Total produced 110
Specifications Configuration: ​  • AAR B-B  • UIC Bo'Bo'  • Commonwealth Bo-Bo Gauge 3 ft 6 in (1,067 mm) Cape gauge Wheel diameter 1,250 mm (49.2 in) Length: ​  • Over couplers 18,300 mm (60 ft 0.5 in) Axle load 26,000 kg (57,000 lb) Adhesive weight 104,000 kg (229,000 lb) Loco weight 104,000 kg (229,000 lb) max Electric system/s Dual 3 kV DC & 25 kV AC 50 Hz catenary Current pickup(s) Pantographs Loco brake Electro-pneumatic, regenerative & rheostatic Train brakes Air Couplers AAR knuckle Type F
Performance figures Maximum speed 120 km/h (75 mph) operating 132 km/h (82 mph) by design Power output: ​  • Continuous 3,000 kW (4,000 hp) Tractive effort: ​  • Starting 392 kN (88,000 lbf)  • Continuous 300 kN (67,000 lbf)
Career Operators Transnet Freight Rail Class 19E Number in class 110 Numbers 19-001 to 19-110 Delivered 2009 First run 2009

The Transnet Freight Rail Class 19E of 2009 is a South African electric locomotive.

In 2009, Transnet Freight Rail placed the first of 110 Class 19E single-cab dual-voltage 3 kV DC and 25 kV AC electric locomotives with a Bo-Bo wheel arrangement in service on the Coalink line from Ermelo to Richards Bay.

Manufacturer

The dual-voltage 3 kV DC and 25 kV AC Class 19E is the product of a joint venture by Mitsui for the design, Toshiba for the electrical equipment, Union Carriage and Wagon (UCW) for the bodies and the RSD division of DCD-Dorbyl for the bogies. It was locally manufactured by UCW in Nigel, Gauteng. Road testing on the Class 19E started in August 2008.

Characteristics

The Class 19E was the first South African AC locomotive to incorporate regenerative as well as rheostatic electric braking. While regenerative braking was used on all South African 3 kV DC mainline locomotives dating back all the way to the introduction of the Class 1E in 1925, the notable exception being the Class 18E, all earlier 25 kV and 50 kV AC South African locomotives made use of rheostatic braking only.

The locomotive uses Toshiba-made 3-phase AC motors, powered through Insulated-gate bipolar transistor (IGBT) control. It is a dual-voltage locomotive, designed to operate on either 3 kV DC or 25 kV AC. Like the earlier Classes 7E1, 7E4, 9E, 11E, 15E and 18E electric locomotives, these engines have driving cabs at one end only since they would only be utilised in multi-unit consists.

As on the dual-voltage Classes 20E and 21E, the main electric circuit is automatically selected in either AC or DC mode based on the voltage of the overhead contact wire feeding the locomotive. To facilitate automatic trouble-free transition on the run, the locomotive is equipped with onboard voltage detectors, while the overhead wire is equipped with two wooden isolators and a 3 metres (10 feet) length of neutral wire to separate the AC and DC feeds. The neutral section is connected to the rails, which serve as the return conductor on electrified lines.

The transition process requires that the locomotive should be switched off automatically before it reaches the isolators and the unpowered overhead wire section, and automatically restarted after exiting from under the unpowered wire. This is done by a pair of track magnets, one on either side of the neutral overhead wire and spaced 45 metres (148 feet) apart. The two magnets are mounted with their polarities reversed in relation to each other and they activate a magnetic relay, located underneath the locomotive, to do the switching off and restarting.

By July 2009, Transnet Freight Rail (TFR) had taken delivery of the first three Class 19E locomotives, and UCW intended to deliver between six and eight new units per quarter.

Service

The Class 19E locomotives were placed in service on the 580 kilometres (360 miles) long Coalink line from Ermelo to Richards Bay to haul export coal from forty-four coal mines in Mpumalanga to the Richards Bay Coal Terminal (RBCT), the export coal harbour in Richards Bay, KwaZulu-Natal. In the process, it relieved some Classes 7E, 7E1 and 7E3 electric locomotives on the Coalink Line for use elsewhere.

Illustration

• No. 19-011 at Ermelo, Mpumalanga, 18 September 2010

References

1. Railways Africa, 29 Aug 2008: First 19E Loco
2. ^ South African Railway News, 9 Apr 2009: TFR Class 19E Test Train / Information
3. Railways Africa, 29 Aug 2008: First 19E Loco
4. Toshiba Review Feature article (Japanese)
5. Railways Africa, 1 Sep 2006: 220 Bogies on Order
6. Toshiba Review, 2008, Vol 63 No 9
7. Railways Africa, 2 Aug 2009: Visit to UCW
8. ^ Class 20E manual: Part 1: Locomotive Profile and Technical Data
9. Railways Africa, 9 Jul 2009: Loco Delivery Delays

External links

Media related to South African Class 19E at Wikimedia Commons

v t e Locomotives of South Africa
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Electric	Amcoal Class E38 SAR Class ES SAR Class ES1 SAR Class Exp-AC SAR Class 1E SAR Class 2E SAR Class 3E SAR Class 4E SAR Class 5E s1 SAR Class 5E s2 SAR Class 5E s3 SAR Class 5E1 s1 SAR Class 5E1 s2 SAR Class 5E1 s3 SAR Class 5E1 s4 SAR Class 5E1 s5 SAR Class 6E SAR Class 6E1 s1 SAR Class 6E1 s2 SAR Class 6E1 s3 SAR Class 6E1 s4 SAR Class 6E1 s5 SAR Class 6E1 s6 SAR Class 6E1 s7 SAR Class 6E1 s8 SAR Class 6E1 s9 SAR Class 6E1 s10 SAR Class 6E1 s11 SAR Class 7E SAR Class 7E1 SAR Class 7E2 s1 SAR Class 7E2 s2 SAR Class 7E3 s1 SAR Class 7E3 s2 Spoornet Class 7E4 SAR Class 8E SAR Class 9E s1 SAR Class 9E s2 SAR Class 10E SAR Class 10E1 s1 Spoornet Class 10E1 s2 SAR Class 10E2 SAR Class 11E SAR Class 12E Spoornet Class 14E Spoornet Class 14E1 TFR Class 15E Spoornet Class 16E Spoornet Class 17E Spoornet Class 18E s1 TFR Class 18E s2 TFR Class 19E TFR Class 20E TFR Class 21E TFR Class 22E TFR Class 23E
Gas-electric	SAR Gas-electric
Diesel	Cape gauge Diesel–electric PRASA Class Afro 4000 SAR Class DS SAR Class DS1 SAR Class 31-000 SAR Class 32-000 SAR Class 32-200 SAR Class 33-000 SAR Class 33-200 SAR Class 33-400 SAR Class 34-000 SAR Class 34-200 SAR Class 34-400 SAR Class 34-500 SAR Class 34-600 SAR Class 34-800 SAR Class 34-900 SAR Class 35-000 SAR Class 35-200 SAR Class 35-400 SAR Class 35-600 TFR Class 35-800 SAR Class 36-000 SAR Class 36-200 SAR Class 37-000 Spoornet Class 39-000 TFR Class 39-200 TFR Class 43-000 TFR Class 44-000 TFR Class 45-000 2' gauge Diesel–electric SAR Class 91-000 Cape gauge Diesel–hydraulic SAR Class 61-000 Cape gauge Electro-diesel Spoornet Class 38-000
List of South African locomotive classes South African locomotive numbering and classification

• Electric locomotives of South Africa
• Bo-Bo locomotives
• Union Carriage & Wagon locomotives
• Mitsui locomotives
• Toshiba locomotives
• Multi-system locomotives
• Cape gauge railway locomotives
• Railway locomotives introduced in 2009
• 2009 in South Africa