Siemens ACS-64

Siemens ACS-64

Amtrak ACS-64 No. 600 leading Northeast Regional train No. 152 near Odenton, MD on February 8, 2014

Type and origin Power type Electric Builder Siemens Mobility Order number Amtrak: 70 SEPTA: 13 (option for 5 additional) Build date Amtrak: 2012-2015 SEPTA: 2015-2018

Specifications AAR wheel arr. B-B Gauge 1,435 mm (4 ft 8 1⁄2 in) Trucks Siemens model SF4 Wheel diameter 1,117 mm (43.98 in) (new) 1,041 mm (40.98 in) (worn) Minimum curve 76 m (249 ft 4.1 in) Wheelbase 9.9 m (32 ft 5.8 in) (bogie centre distance) Length 20.32 m (66 ft 8 in) Width 2,984 mm (9 ft 9.5 in) Height 3,810 mm (12 ft 6 in) (excluding pantograph) Axle load 54,250 lb (24.61 t) Adhesive weight 100% Loco weight 215,537 lb (97.766 t) Electric system(s) 12 kV, 25 Hz AC, Catenary 12.5 kV, 60 Hz AC, Catenary 25 kV, 60 Hz AC, Catenary Current collection Pantograph Traction motors 3-phase, AC, Fully Suspended, Siemens built (Norwood, Ohio) Head end power 1,000 kW (1,300 hp) 3-phase, 60 Hz, 480 VAC, 1000 kVA Transmission Pinion Hollow Shaft Drive w/ Partially Suspended Gearboxes MU working Yes Loco brake Regenerative braking, NYAB Electro-Pneumatic Cheek Mounted Disk Brakes Train brakes Electro-Pneumatic Safety systems FRA standards ACSES II

Performance figures Maximum speed 125 mph (200 km/h) Service 135 mph (220 km/h) Design Power output 6,400 kW (8,600 hp) Maximum (Short-Time) 5,000 kW (6,700 hp) Continuous Tractive effort Starting: 320 kN (72,000 lbf) Continuous (5,000 kW (6,700 hp)): 282 kN (63,000 lbf)@40 mph (64 km/h) 89 kN (20,000 lbf)@125 mph (200 km/h) Short-time (6,400 kW (8,600 hp)): 270 kN (61,000 lbf)@53.5 mph (86 km/h) 115 kN (26,000 lbf)@125 mph (200 km/h) Factor of adh. 2.99 (33.4%) Loco brakeforce 5,000 kW (6,700 hp) Maximum

Career Operators Amtrak, SEPTA Numbers Amtrak: 600-665, 667-670 SEPTA: 6401-6418 (tentative) Nicknames Sprinters Delivered 2013-2016 First run February 7, 2014

Sources: except where noted

The Siemens ACS-64, or Amtrak Cities Sprinter, is an electric locomotive designed by Siemens Mobility for use in the northeastern United States. The first 70 locomotives built are to operate on the Northeast Corridor (NEC) and the Keystone Corridor, replacing Amtrak's existing fleet of AEM-7 and HHP-8 locomotives. The first Amtrak ACS-64 entered service in February 2014; deliveries continued until 2016. SEPTA Regional Rail will receive 13 locomotives (with an option to purchase 5 additional units) for commuter service in 2018.

The design is based on the EuroSprinter and the Vectron platforms, which Siemens sells in Europe and Asia. 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. The body is a monocoque structure with integral frames and sidewalls.

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). 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, with trains of eight Amfleets taking two and a half minutes to reach the same speed. They have advanced safety systems, including specialized couplers designed to keep trains from rolling over, jackknifing, or derailing during a collision. 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.