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Specifications
Specifications
Configuration:;
• UIC	Co-Co
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Length	21.2 m (69 ft 7 in)
Loco weight	134 t (132 long tons; 148 short tons); 139 t (137 long tons; 153 short tons)
Fuel type	Diesel
Prime mover	EMD 16-710G3C-ES
Alternator	EMD TA17-CA9E
Traction motors	Siemens 1TB 2630

Type and origin
Type and origin
Power type	Diesel-electric
Builder	EDI Rail, Cardiff (GT46C-ACe),; Progress Rail, Muncie, Indiana (GT46C-ACe Gen II)
Model	Electro-Motive Diesel GT46C-ACe
Build date	2007–present
Total produced	107

Downer EDI Rail GT46C-ACe
Downer EDI Rail GT46C-ACe
	Aurizon GWA008, CLF5, CLP8, GWA010 on 5DA2 at Mallala
Power type
Type and origin
Power type	Diesel-electric
Builder	EDI Rail, Cardiff (GT46C-ACe),; Progress Rail, Muncie, Indiana (GT46C-ACe Gen II)
Model	Electro-Motive Diesel GT46C-ACe
Build date	2007–present
Total produced	107
Configuration:;
Specifications
Configuration:;
• UIC	Co-Co
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Length	21.2 m (69 ft 7 in)
Loco weight	134 t (132 long tons; 148 short tons); 139 t (137 long tons; 153 short tons)
Fuel type	Diesel
Prime mover	EMD 16-710G3C-ES
Alternator	EMD TA17-CA9E
Traction motors	Siemens 1TB 2630
Maximum speed
Performance figures
Maximum speed	115 km/h (71 mph)
Power output	Gross(BHP): 4,500 hp (3,356 kW); Net(THP): 4,300 hp (3,207 kW)
Tractive effort	Starting: 600 kN (134,885 lbf); Continuous: 520kN@19km/h ; (116,[email protected])
Operators
Career
Operators	Aurizon; Pacific National; SCT Logistics; Whitehaven Coal; Southern Shorthaul Railroad; Qube Holdings;
First run	2007
Current owner	Aurizon; Pacific National; SCT Logistics; Whitehaven Coal; Southern Shorthaul Railroad; Manildra Group; Qube Holdings
Disposition	100 in service, 1 scrapped

The GT46C-ACe is a model of Australian diesel-electric locomotive designed and built between 2007–present by Downer Rail at its Cardiff Locomotive Workshops using Electro-Motive Diesel components until 2014, with later units built in Muncie, Indiana.

The units were built as the SCT class for SCT Logistics, the LDP class for DownerEDi Leasing, the TT class for Pacific National, the GWA class for Genesee & Wyoming Australia, the GWB class for One Rail Australia, the WH class for Whitehaven Coal, the SSR class for Southern Shorthaul Railroad, the QE class for Qube Holdings, CBH group, and the MAN class for Manildra Groups.

Design

The class was a new design for Australian conditions based on other locomotives produced by Downer EDI Rail, such as the narrow gauge GT42CU AC purchased by Queensland Rail and Pacific National and the GT46C purchased by Westrail, Freight Australia and FreightLink. The GT42CU AC used a 12-cylinder EMD 710 engine, based on the US-built SD70MAC with scaled-down traction motors, while the GT46C used a 16-cylinder EMD 710 engine with DC traction systems. The American SD70ACe was EMD's second-generation AC loco with IGBT inverters, but was too large and heavy for the Australian interstate standard gauge network, weighing in at 188 tonnes when the limit was 134 tonnes. In addition, the GT46C design was already at the 134 tonne limit, even before adding inverters, heavier traction motors and more cooling capacity for the higher power engine, and there was a requirement that fuel capacity could not be sacrificed.^[1]^{[further explanation needed]}

The locomotive has AC traction equipment, with a Mitsubishi Electric package also used on the SD70ACe, including a TA17 traction alternator, CA9E companion alternator and six ITB 2630 traction motors, along with solid state IGBT inverters.^[2] The prime mover is a turbocharged 16-cylinder EMD 710. New technology used included passive steer bogies, to reduce flange wear on curves.^[3] Until local production ceased in 2014, the class were built at Cardiff except for frames constructed at Port Augusta and bogie frames at Kelso.^[3] Locomotives were built in the US after 2014.

Variations by class

SCT class

The SCT class are used by SCT Logistics on their freight services from Adelaide to Melbourne, Parkes and Perth. Locomotive SCT007 is named Geoff (James Bond) Smith after the CEO of the company.^[4]^[5] The benefits of AC traction has enabled a fleet of 15 locomotives to do the work of 20 DC traction equipped locomotives, three AC vs four DC units being needed on the Melbourne to Adelaide journey, and two AC vs three DC units between Adelaide to Perth. An on-train refuelling system carries 50,000 litres (13,000 US gallons) of diesel fuel in a tank car behind the locomotives, eliminating the need to refuel en route.^[1]

TT class and LDP class

With the ageing of the 48 and PL-class fleets, Pacific National purchased 31 TT class locomotives for Hunter Valley traffic. They are equipped with ECP brakes and are used with NHDH, NHEH and NHYH hoppers. They are different in some respects from SCT and LDP category units because they can run at two different weights. The first locomotives were originally intended to be built as LDP010-LDP018 and leased to other railway operators, until Downer EDI and Pacific National reached an agreement to sell directly. TT130, TT131 and TT132 are owned by Pacific National.

Downer built nine locomotives, LDP001 to LDP009, for their subsidiary company, Locomotive Demand Power Pty Ltd, to lease them to other freight operators.^[6] In 2018, Pacific National acquired them.^[7] Repaints of the LDP's into PN livery commenced in 2022.

WH class

Three WH class locomotives were ordered by Whitehaven Coal. Operated by Pacific National, they are used to haul coal trains from Whitehaven's mines in the Gunnedah Basin.^[8]

Locomotive GWA009 on Genesee & Wyoming Australia grain train from Dry Creek North to Tailem Bend.

GWA and GWB classes

In 2011, Genesee & Wyoming Australia ordered seven locomotives (later increased to 10) for the Adelaide–Darwin rail corridor.^[9]^[10]^[11] The locomotives were used on several grain services throughout South Australia.

The GWA class were accompanied by three newly commissioned GWB class (GT46C ACe Gen-II) locomotives (formerly known as EMD class) from storage in the United States. Numbered GWB101 to GWB103, they were deployed on intermodal, grain and ore traffic and were included in the sale of One Rail Australia assets to Aurizon in July 2022. A further three locomotives, numbered GWB104 to GWB106 were ordered by One Rail Australia before the sale to Aurizon took place. These locomotives arrived on Australian shores on 24 January 2023, and entered service in March of the same year.

On 14 June 2023, GWA003 and ALF21 collided with a truck near Katherine and subsequently caught fire, GWA003 and ALF21 were destroyed and subsequently Scrapped^[12]

SSR class

The first two class members were originally built as LDP013 and LDP014 in 2013, they were then purchased by Southern Shorthaul Railroad in 2014 to operate on their Weston Milling grain service. Southern Shorthaul Railroad ordered two GT46C ACe Gen-II locomotives in 2023, they entered service in early 2024.^[13]

QE Class

In 2022, Qube Holdings announced that it had placed an order for 12 units to be built in the US.^[14]^[15] All 12 units entered service in 2024.

CBH Group

In December 2022, CBH Group announced that it had ordered seven locomotives from Progress Rail to be delivered by November 2024 to bolster their standard-gauge locomotive fleet. They will be operated by Aurizon under the existing service agreement.^[16]^[17]

MAN Class

In April 2023, it was announced that Manildra Group had ordered 17 locomotives from Progress Rail. In an agreement similar to CBH Group's contract with Aurizon, beginning from 1 November 2024, Southern Shorthaul Railroad will provide train crews and oversee daily operation of Manildra owned locomotives and wagons. This replaces Manildra Group's existing agreement with Pacific National, who provided their own rolling stock to service Manildra Group's requirements. All locomotives are expected to be delivered by early 2025.^[18]

Fleet

Owner	Class	Number in class	Road numbers	Built	Notes
SCT Logistics	SCT class	15	SCT001–SCT015	2007–08
Pacific National	TT class LDP class	49	TT01–TT08, TT101–TT132, LDP001–LDP009	2009–13	TT02 named Darrell Sherry
Whitehaven Coal	WH class	3	WH001–WH003	2011	Operated by Pacific National
Aurizon	GWA class GWB class	16	GWA001–GWA010, GWB101–GWB106	2011-2023	GWA001 named Phillip J. Ringo, and GWA002 named Richard H. Allert. GWA003 scrapped
Southern Shorthaul Railroad	SSR class	4	SSR101–SSR102, SSR103–SSR104	2013-2023	Named Enfield and Bendigo, ex LDP013 and LDP014. SSR103 and SSR104 are named after John Mackie and Ian Williams.
Qube Holdings	QE class	12	QE001-QE012	2023-24
CBH Group		7		2024	On order; to be operated by Aurizon
Manildra Group	MAN class	17	MAN001-MAN017	2024	MAN001 named Len and MAN002 named Simmo. MAN001-MAN012 in Australia; to be operated by SSR

Related models

Downer EDI Rail GT46C, ancestor model
Downer EDI Rail GT42CU AC, narrow gauge variant
Downer EDI Rail GT42CU ACe, narrow gauge variant
UGL Rail C44aci, principal competitor

Notes

References

^ ^a ^b Paul-Hewison. "Introducing the next generation locomotive to the Australian rail network" (PDF). Presentation, Conference on Railway Engineering 2008. core2008.org. Archived from the original (PDF) on 13 September 2009. Retrieved 5 September 2009.
^ "Downer EDI factsheet: GT46C ACe" (PDF). downeredi.com. Retrieved 5 September 2009.^{[permanent dead link‍]}
^ ^a ^b "The SCT Class - A Brief Look". Motive Power: 56–57. April 2008.
^ SCT Class Vicsig
^ "Innovation is the locomotive". The Age. theage.com.au. 6 June 2005. Retrieved 5 September 2009.
^ "LDP Class (GT46C-ACe)".
^ "Linfox shifts deeper into rail with Aurizon intermodal acquisition". 31 January 2019.
^ WH Class Vicsig
^ Genesee & Wyoming Australia commission first of 16 locomotives Adelaide Advertiser 22 November 2011
^ New locos to upgrade and expand Genesee & Wyoming fleet Rail Express 23 November 2011
^ GWA Class Vicsig
^ Hislop, Jack (15 June 2023). "Minimal disruptions expected to Darwin supermarket supplies following freight train derailment". ABC News. Retrieved 15 June 2023.
^ Qube orders GT46 units from Progress Rail. Railpage. Retrieved 26th December 2022. Archived from the original on 26th December 2022.
^ QUBE orders GT46 locomotives. Railpage. Retrieved 26 December 2022. Archived from the original on 26 December 2022.
^ Qube press release. Retrieved 26 December 2022. Archived from the original on 26 December 2022.
^ CBH acquires seven SG locos. Railpage. Retrieved 26 December 2022. Archived from the original on 26 December 2022.
^ CBH acquires seven SG locomotives, CBH press release. Retrieved 26 December 2022. Archives from the original on 26 December 2022.
^ Southern Shorthaul wins Manildra NSW operating contract. Archived from the original on 27 April 2023.

External links

ARDP: SCT class detail photos

[PHewison-1] Paul-Hewison. "Introducing the next generation locomotive to the Australian rail network" (PDF). Presentation, Conference on Railway Engineering 2008. core2008.org. Archived from the original (PDF) on 13 September 2009. Retrieved 5 September 2009.

[fs-2] "Downer EDI factsheet: GT46C ACe" (PDF). downeredi.com. Retrieved 5 September 2009.^{[permanent dead link‍]}

[MotivePowerApr08-3] "The SCT Class - A Brief Look". Motive Power: 56–57. April 2008.

[4] SCT Class Vicsig

[5] "Innovation is the locomotive". The Age. theage.com.au. 6 June 2005. Retrieved 5 September 2009.

[6] "LDP Class (GT46C-ACe)".

[7] "Linfox shifts deeper into rail with Aurizon intermodal acquisition". 31 January 2019.

[8] WH Class Vicsig

[9] Genesee & Wyoming Australia commission first of 16 locomotives Adelaide Advertiser 22 November 2011

[10] New locos to upgrade and expand Genesee & Wyoming fleet Rail Express 23 November 2011

[11] GWA Class Vicsig

[12] Hislop, Jack (15 June 2023). "Minimal disruptions expected to Darwin supermarket supplies following freight train derailment". ABC News. Retrieved 15 June 2023.

[13] Qube orders GT46 units from Progress Rail. Railpage. Retrieved 26th December 2022. Archived from the original on 26th December 2022.

[14] QUBE orders GT46 locomotives. Railpage. Retrieved 26 December 2022. Archived from the original on 26 December 2022.

[15] Qube press release. Retrieved 26 December 2022. Archived from the original on 26 December 2022.

[16] CBH acquires seven SG locos. Railpage. Retrieved 26 December 2022. Archived from the original on 26 December 2022.

[17] CBH acquires seven SG locomotives, CBH press release. Retrieved 26 December 2022. Archives from the original on 26 December 2022.

[18] Southern Shorthaul wins Manildra NSW operating contract. Archived from the original on 27 April 2023.

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PROFILPELAJAR.COM

Downer EDI Rail GT46C ACe

Design

Variations by class

SCT class

TT class and LDP class

WH class

GWA and GWB classes

SSR class

QE Class

CBH Group

MAN Class

Fleet

Related models

Notes

References

External links

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