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![]() Amtrak ACS-64 No. 600 with the Crescent in 2021 | |||||||||||||||||||||||||||||||||||||||||||||||||
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Sources: [6] except where noted |
The Siemens ACS-64, or Amtrak Cities Sprinter, is an electric locomotive designed by Siemens Mobility for use on the Northeast Corridor (NEC) and the Keystone Corridor in the northeastern United States. The design was based on locomotives Siemens created for use in Europe and Asia, but with changes to comply with American standards. The ACS-64 is built at the Siemens factory in Florin, California, located outside of Sacramento.
The first 70 locomotives were built for Amtrak to replace the railroad's fleet of aging AEM-7 and unreliable HHP-8 locomotives. The first ACS-64 entered service in February 2014 and deliveries continued until August 2016.
The Southeastern Pennsylvania Transportation Authority in Southeastern Pennsylvania operates a fleet of 15 ACS-64s since August 2018, on the agency's Regional Rail Lines.
The design is based on the EuroSprinter and the Vectron platforms, which Siemens sells in Europe and Asia. [7] Significant structural changes to the design were made to comply with American crashworthiness requirements, including the addition of crumple zones and anti-climbing features as well as structural strengthening of the cab, resulting in a heavier locomotive than the previous models. [5] [2] The body is a monocoque structure with integral frames and sidewalls. [2]
The locomotives are able to operate from the 25 kV 60 Hz, 12.5 kV 60 Hz, and 12 kV 25 Hz power supplies used on the Northeast Corridor, and have a maximum power of 6,400 kilowatts (8,600 hp). [7] 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, [8] with trains of eight Amfleets taking two and a half minutes to reach the same speed. [9] They had advanced safety systems, including specialized couplers designed to keep trains from rolling over, jackknifing, or derailing during a collision. [10] 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 used to meet HEP needs, further reducing current draw from the grid. [10]
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. [2] 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. [8] 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. [2]
The locomotives are compliant with the "Buy America Act" and were assembled at the Siemens factory in Florin, California, with traction and electrical equipment being manufactured at Siemens facilities in Norcross and Alpharetta, Georgia. [5] Traction inverters were manufactured in Alpharetta, and the traction motors and gear units were manufactured in Norwood, Ohio. [4]
In October 2010, Amtrak ordered 70 locomotives at a cost of US$466 million, to be delivered beginning in February 2013. [3] 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. On June 30, 2011, US Secretary of Transportation Ray LaHood announced that Amtrak had received a $562.9 million loan from the federal government's Railroad Rehabilitation and Improvement Financing program for the new locomotives. [11] The additional funding over and above the $466 million will cover capital spare parts and facility improvements to accommodate the ACS-64s.
Amtrak and Siemens Mobility unveiled the first three completed locomotives on May 13, 2013. They were tested during the summer of 2013: Nos. 600 and 601 at the Transportation Technology Center in Pueblo, Colorado, and No. 602 on the NEC. [12] [13]
On February 6, 2014, then-Vice President Joe Biden visited 30th Street Station in Philadelphia to tour ACS-64 #600. In his subsequent remarks he stressed the importance of infrastructure investment as well as the important role Amtrak's new locomotives will play in serving the critical artery of the Northeast Corridor. [14]
Amtrak and Siemens celebrated the completion of the last ACS-64, No. 670, in Florin, California, on June 2, 2016. [15] The celebration concluded with unit No. 670 being towed by Amtrak CEO Joe Boardman's train bound for Washington, D.C. [ citation needed ] Locomotive No. 670 entered service in August 2016, completing the acceptance of the Amtrak order. [16]
Unit 600 entered service on February 7, 2014, on Northeast Regional train 171 from Boston to Washington, D.C. [17] As the new locomotives entered service, they gradually displaced the electric locomotives that Amtrak had previously operated. The extra six ACS-64 units were to be used to increase the number of locomotives available for use at any point, and to add more frequent service in the future. [18] The final unit, #670, was delivered from Siemens on June 2, 2016, [15] and entered revenue service in August of the same year. [16]
In May 2015, SEPTA (Philadelphia's mass-transit authority) approved an initial order for 13 ACS-64 locomotives for commuter service to replace its 7 AEM-7 and single ALP-44 locomotives on push-pull express trains, with an option for an additional five locomotives to be added to the order. On November 11, 2015, Siemens announced that it was awarded the $118 million contract for the initial 13 locomotives. [19] [20] The total contract value, including the option for additional locomotives, is worth $154 million. [21] [22] [23]
On February 29, 2016, Amtrak unit 664 began test runs on SEPTA Regional Rail branches to test the height of the locomotives on SEPTA territory, and to ensure clearance through the Center City Tunnel. [24] After testing the unit on most of SEPTA's lines, it was returned to Amtrak on March 21, 2016, for completion of its acceptance testing. [25] From July 2016 until April 2017, SEPTA leased several ACS-64 units to pull five Amfleet cars and several MARC Train sets as emergency rolling stock after all Silverliner V cars were temporarily pulled from service. [26]
SEPTA's first ACS-64 was delivered on December 14, 2017, by which time SEPTA had increased its order to 15 locomotives. [27] [28] [29] The first unit entered service on the Paoli/Thorndale Line on July 11, 2018. [30]
The Northeast Regional is an intercity rail service operated by Amtrak in the Northeastern and Mid-Atlantic United States. In the past it has been known as the NortheastDirect, Acela Regional, or Regional. It is Amtrak's busiest route, carrying 9,163,082 passengers in fiscal year (FY) 2023. The Northeast Regional service received more than $787.7 million in gross ticket revenue in FY 2023.
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Media related to Siemens ACS-64 locomotives at Wikimedia Commons