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.
Quick Facts Type and origin, Power type ...
Siemens ACS-64 |
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Amtrak ACS-64 No. 600 with the Crescent in 2021 |
Type and origin |
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Power type | Electric |
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Builder | Siemens Mobility |
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Order number | Amtrak: 70 SEPTA: 15 (option for 3 additional) |
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Build date | Amtrak: 2012–2016 SEPTA: 2015–2018 |
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Specifications |
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Configuration:
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• AAR | B-B |
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• UIC | Bo'Bo' |
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Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
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Trucks | Siemens model SF4 |
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Wheel diameter | 43.98 in (1,117 mm) (new) 40.98 in (1,041 mm) (worn) |
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Minimum curve | 249.3 ft (76 m) |
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Wheelbase | 32 ft 5.8 in (9.9 m) (bogie center distance) |
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Length | 66 ft 8 in (20,320 mm) |
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Width | 9 ft 9+1⁄2 in (2,984 mm) |
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Height | 12 ft 6 in (3,810 mm) (excluding pantograph) |
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Axle load | 54,250 lb (24,610 kg) |
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Adhesive weight | 100% |
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Loco weight | 215,537 lb (97,766 kg) |
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Electric system/s | Overhead line; |
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Current pickup(s) | Pantograph |
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Traction motors | 3-phase, AC, fully suspended, Siemens built (Norwood, Ohio) |
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Head end power | 1,000 kW (1,340 hp) 3-phase, 60 Hz, 480 VAC, 1,000 kVA |
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Transmission | Pinion Hollow Shaft Drive w/ Partially Suspended Gearboxes |
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MU working | Yes |
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Loco brake | Regenerative braking, NYAB Electro-Pneumatic Cheek Mounted Disk Brakes |
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Train brakes | Electro-pneumatic[1] |
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Safety systems | FRA standards ACSES II[2] |
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Performance figures |
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Maximum speed | 125 mph (201 km/h) Service 135 mph (217 km/h) Design[3] |
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Power output | 6,400 kW (8,600 hp) Maximum (short-time) 5,000 kW (6,700 hp) Continuous |
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Tractive effort | Starting: 72,000 lbf (320 kN) Short-time: 61,000 lbf (270 kN) @ 53.5 mph (86 km/h) 26,000 lbf (115 kN) @ 125 mph (200 km/h) Continuous: 63,000 lbf (282 kN) @ 40 mph (64 km/h) 20,000 lbf (89 kN) @ 125 mph (200 km/h) |
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Factor of adh. | 2.99 (33.4%) |
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Brakeforce | 34,000 lbf (150 kN), 6,700 hp (5,000 kW) Maximum[4] |
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Career |
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Operators | Amtrak, SEPTA |
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Numbers | |
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Nicknames | Sprinters |
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Delivered | 2013-2018 [5] |
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First run | February 7, 2014 with Amtrak |
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Sources:[6] except where noted |
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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.