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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 the railroads' existing fleet of AEM-7 and HHP-8 locomotives.〔 The first Amtrak ACS-64 entered service in February 2014; deliveries will last until 2015. SEPTA Regional Rail will receive an additional 13 locomotives for commuter service in 2018. ==Design== 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 , , and power supplies used on the Northeast Corridor, and have a maximum power of .〔 The locomotives are designed to be capable of accelerating 18 Amfleet cars to maximum speeds as high as 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.〔 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.〔 The HEP/auxiliary inverters are dual-redundant and identical (rated ), allowing the locomotive to remain in service should one inverter fail en route.〔 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.〔 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.〔 Traction inverters are manufactured in Alpharetta, and the traction motors and gear units are manufactured in Norwood, Ohio.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Siemens ACS-64」の詳細全文を読む スポンサード リンク
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