Published: 04-02-2015 photo #22374 0 comments 0 votes
Amtrak passenger locomotives photographed at the Chicago passenger locomotive depot on the morning of 19 September 2014. 20 of these locomotives were delivered to Amtrak in 1991, numbered 500 to 519. They were nicknamed "Pepsi Cans" by many railfans, due to being delivered in a wide-striped red, white, and blue livery. They have since been repainted in more recent Amtrak liveries.
They operate in a diesel-electric configuration that uses direct current to power the traction motors, producing 3,200 hp (2,400 kW) at 1047 rpm. When providing head end power (HEP) to the train, the engine speed is locked at 900 rpm. Power output to the traction motors is 2,700 hp (2,000 kW) when running in HEP mode with a 0 kW HEP load. Traction horsepower decreases to a bare minimum of 1,685 hp (1,257 kW) when providing the maximum 800 kW (1,100 hp) HEP (non-traction) load to the train.