Amtrak Cities Sprinter

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Siemens ACS-64
Amtrak Cities Sprinter
Amtrak ACS-64 601.jpg
Amtrak ACS-64 601 being delivered to Transportation Technology Center, Inc. for testing on June 8, 2013.
Power typeElectric
BuilderSiemens Mobility
Order number70
Build date2012-
UIC classificationBo'Bo'
Gauge1,435 mm (4 ft 8 12 in)
Wheel diameter1,117 mm (43.98 in) (new), 1,041 mm (40.98 in) (worn)[1][2]
Minimum curve76 m (249 ft 4.1 in)[1]
Wheelbase9.9 m (32 ft 5.8 in)
(bogie centre distance)[1]
Length20.32 m (66 ft 8 in),[1]
Width2,984 mm (9 ft 9.5 in)[1]
Height3,810 mm (12 ft 6 in) (excluding pantograph)[1]
Axle load54,250 lb (24.61 t)
Locomotive weight217,000 lb (98 t)[2][3]
Electric system(s)12 kV 25 Hz AC Catenary
12.5 kV 60 Hz AC Catenary
25 kV 60 Hz AC Catenary
Current collection
method
Pantograph
Traction motorsFully Suspended, Siemens built (Norwood, Ohio)[2][4]
Head end power1 MW (1,300 hp) three phase 60 Hz 480 VAC,[3] 1000 kVA[2]
TransmissionPinion Hollow Shaft Drive w/ Partially Suspended Gearboxes[2]
Multiple workingYes
Top speed125 mph (200 km/h) Service
135 mph (220 km/h) Design[5]
Power output6,400 kW (8,600 hp) Maximum
5,000 kW (6,700 hp) Continuous[2]
Tractive effort320 kN (72,000 lbf) Starting[2][3]
Factor of
adhesion
2.972 (29.72%)
Locomotive brakeRegenerative braking, NYAB Electro-Pneumatic Cheek Mounted Disk Brakes[2]
Locomotive
brakeforce
5,000 kW (6,700 hp) Maximum[2]
Train brakesPneumatic[6]
Safety systemsFRA standards
ACSES II[1]
Number600-669 (units 600-604 completed as of 2013-09-02 [7])
Deliveredexpected 2013-[8]
Notes
Sources:,[8][9] except where noted
 
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Siemens ACS-64
Amtrak Cities Sprinter
Amtrak ACS-64 601.jpg
Amtrak ACS-64 601 being delivered to Transportation Technology Center, Inc. for testing on June 8, 2013.
Power typeElectric
BuilderSiemens Mobility
Order number70
Build date2012-
UIC classificationBo'Bo'
Gauge1,435 mm (4 ft 8 12 in)
Wheel diameter1,117 mm (43.98 in) (new), 1,041 mm (40.98 in) (worn)[1][2]
Minimum curve76 m (249 ft 4.1 in)[1]
Wheelbase9.9 m (32 ft 5.8 in)
(bogie centre distance)[1]
Length20.32 m (66 ft 8 in),[1]
Width2,984 mm (9 ft 9.5 in)[1]
Height3,810 mm (12 ft 6 in) (excluding pantograph)[1]
Axle load54,250 lb (24.61 t)
Locomotive weight217,000 lb (98 t)[2][3]
Electric system(s)12 kV 25 Hz AC Catenary
12.5 kV 60 Hz AC Catenary
25 kV 60 Hz AC Catenary
Current collection
method
Pantograph
Traction motorsFully Suspended, Siemens built (Norwood, Ohio)[2][4]
Head end power1 MW (1,300 hp) three phase 60 Hz 480 VAC,[3] 1000 kVA[2]
TransmissionPinion Hollow Shaft Drive w/ Partially Suspended Gearboxes[2]
Multiple workingYes
Top speed125 mph (200 km/h) Service
135 mph (220 km/h) Design[5]
Power output6,400 kW (8,600 hp) Maximum
5,000 kW (6,700 hp) Continuous[2]
Tractive effort320 kN (72,000 lbf) Starting[2][3]
Factor of
adhesion
2.972 (29.72%)
Locomotive brakeRegenerative braking, NYAB Electro-Pneumatic Cheek Mounted Disk Brakes[2]
Locomotive
brakeforce
5,000 kW (6,700 hp) Maximum[2]
Train brakesPneumatic[6]
Safety systemsFRA standards
ACSES II[1]
Number600-669 (units 600-604 completed as of 2013-09-02 [7])
Deliveredexpected 2013-[8]
Notes
Sources:,[8][9] except where noted

The Amtrak Cities Sprinter, or ACS-64, is an electric locomotive designed by Siemens Mobility for Amtrak.

Order[edit source | edit]

In October 2010, Amtrak ordered 70 locomotives at a cost of US$466 million, to be delivered beginning in February 2013.[10] In order to comply with "Buy American" laws, the locomotives are being manufactured at Siemens' factory in Florin, California, with traction and electrical equipment being manufactured at Siemens facilities in Norcross and Alpharetta, Georgia.[8]

The locomotives are to operate on the Northeast Corridor (NEC) and the Keystone Corridor and replace the railroad's fleet of AEM-7 and HHP-8 locomotives.[11] Initially, the 20 EMD AEM-7DC units with direct current traction motors will be replaced, then the rebuilt 29 AEM-7ACs with AC propulsion, and lastly the 15 HHP-8 units.[11] The extra six ACS-64 units will be for expansion.[11]

The order was the second part of Amtrak's company-wide fleet-replacement program, after an order for 130 Viewliner II passenger cars was placed in July 2010.[12] On June 30, 2011, US Secretary of Transportation Ray LaHood announced that Amtrak had received a US$562.9 million loan from the federal government's Railroad Rehabilitation and Improvement Financing program for the new locomotives.[13]

Amtrak and Siemens Mobility unveiled the first three completed locomotives on May 13, 2013. They are being tested during summer 2013—two at the Transportation Technology Center in Pueblo, Colorado, and one on the NEC—and will enter revenue service in fall 2013.[14][15][16]

Design[edit source | edit]

The design is based on the EuroSprinter and the Vectron platforms,[17] the body is a monocoque structure with integral frames and sidewalls.[1] Significant structural changes to the design were made to comply with American AAR S-580 Locomotive Crashworthiness Requirements including crumple zones, structural strengthening of the cab, and anti-climbing features; resulting in a heavier locomotive than European Eurosprinter/Vectron models.[1][8]

They are able to operate from 25 kV 60 Hz, 12.5 kV 60 Hz, and 12 kV 25 Hz power supplies, and have a total power of 6.4 megawatts (8,600 hp).[17] The locomotives are designed to be capable of accelerating 18 Amfleet cars to maximum speeds as high as 125 mph (201 km/h) on the Northeast Corridor in a little over eight minutes,[18] with trains of eight Amfleets taking two and a half minutes to reach the same speed.[19] They have advanced safety systems, including specialized couplers designed to keep trains from rolling over, jackknifing, or derailing during a collision.[12] Additionally, the new locomotives are more energy-efficient than those that they replace, and lack dynamic braking grids in favor of 100% regenerative braking, depending on grid receptiveness. Energy generated from the brake may also be utilized to meet HEP needs, further reducing current draw from the grid.[12]

Each locomotive has two electrical converter units with three IGBT based, water cooled output inverters per converter. Two of the inverters power the traction motors; the third unit supplies head-end and auxiliary power.[1] The HEP/auxiliary inverters are dual-redundant and identical (rated 1,000 kW or 1,300 hp), allowing the locomotive to remain in service should one inverter fail en route.[20] The locomotive bogies are fabricated steel designs, with low-lying traction links and center pivot pin. The traction motors are frame-mounted, with torque transmitted via a hollow shaft drive. Locomotive braking is facilitated by cheek mounted disc brakes on each wheel.[1]

References[edit source | edit]

  1. ^ a b c d e f g h i j k "A new face in the Northeast Corridor: locomotive borrowing heavily from the proven Eurosprinter and more recent Vectron designs, Siemens Mobility is adapting European electric locomotive technology to produce the ACS64 'Amtrak Cities Sprinter' for North America's busiest inter-city passenger route", Railway Gazette International, 1 September 2011 
  2. ^ a b c d e f g h i "ACS-64 Amtrak Cities Sprinter Electric Locomotive, Northeast and Keystone Corridors". Siemens Industry, Inc. Retrieved June 25, 2013. 
  3. ^ a b c "Highspeed Passenger Locomotive Amtrak Cities Sprinter ACS64". Siemens Mobility. Archived from the original on 22 February 2012. Retrieved 23 February 2012. 
  4. ^ "DOT Announces $562.9 Million AMTRAK Loan for 70 Locomotives to Run on Northeast Corridor", www.dot.gov (=United States Department of Transportation), 29 June 2011 
  5. ^ "Siemens AG bags $466-mn order from US railroad company Amtrak news", www.domain-b.com, 29 October 2010 
  6. ^ PRIIA Specifications for single level cars
  7. ^ http://www.flickr.com/photos/52752235@N05/9657717496/sizes/k/in/photostream/ Amtrak #604 Sitting quietly at 14th Street Yard, Chicago IL, flickr photo, uploader, Charles Hayes, accessed 2013-09-10
  8. ^ a b c d "Amtrak orders Siemens 200 km/h Cities Sprinter locomotives", www.railwaygazette.com (Railway Gazette International), 29 October 2010, archived from the original on 1 November 2010, retrieved 2010-10-30 
  9. ^ Railway Age, June 2011, pp.30-32
  10. ^ Press release, Amtrak, 29 October 2010
  11. ^ a b c "Amtrak contracts Siemens to supply 70 electric locomotives". Progressive Railroading. 29 October 2010. Retrieved 29 October 2010. 
  12. ^ a b c "Amtrak orders 70 new electric locomotives from Siemens". Trains Magazine. 29 October 2010. Retrieved 30 October 2010. 
  13. ^ "Amtrak receives $562.9m loan to purchase 70 locomotives for Northeast Corridor". Rail.co. 30 June 2011. Archived from the original on 30 June 2011. Retrieved 1 July 2011. 
  14. ^ http://news.yahoo.com/amtrak-unveils-locomotives-replace-aging-174941862.htm Amtrak unveils locomotives to replace aging fleet, Associated Press, published in Yahoo News on-line, May 13, 2013
  15. ^ http://inr.synapticdigital.com/siemens/NewAmtrakCars/ Siemens Provides First Look at New Amtrak Locomotives
  16. ^ http://www.amtrak.com/ccurl/898/720/Amtrak-Siemens-Locomotive-ATK-13-039.pdf AMTRAK UNVEILS ADVANCED TECHNOLOGY LOCOMOTIVES FOR NORTHEAST SERVICE; Siemens-built equipment to improve reliability, efficiency and mobility
  17. ^ a b "Siemens breaks into the U.S. long-distance passenger rail market". www.infrasite.net. 29 October 2010. Retrieved 2010-10-30. 
  18. ^ Railway Age, June 2011, pp.30-31
  19. ^ http://www.youtube.com/watch?v=vJMhKgEnnNc In-cab video of 601 + 8 Amfleets performing an acceleration test at Pueblo, CO
  20. ^ Railway Age, June 2011, p.32

Sources[edit source | edit]

Press releases

External links[edit source | edit]