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Metro North issues RFP for new dual power locomotives

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[quote user="daveklepper"]where-as NJT and LIRR dual-power locomotives were required to have diesel performance reasonably close to electric performance and visa-versa, Metro North and Amtrak settled for much lower speed under electric performance, since electric was only to be used south of 125th Street on Metro North, and south of 72nd street on the former West Side Freight Line for Amtrak.[/quote] If you take the NJT Bombardier ALP-45DP it runs 125 mph under catenary and 100 mph as diesel-electric. Amtrak looks for dual-power locomotives capable of 125 mph as diesel-electric and 80 mph on 3rd rail. The reason is that 80 mph is about the maximum speed considered safe on 3rd rail. [quote user="daveklepper"]Then there is the question of electric power, 600 or 750 volts DC and/or 12,000 and 25,000 volts AC. Metro North and LIRR only need DC. NJT AC. Amtrak both? Or does the tunnel under Hudson Yards between Penn Station and the former WSFL have clearances for catenary, not yet insalled?[/quote] Metro North only asks for 3rd rail dual power. The existing P32AC-DM run on 750 VDC. I think the straight electrics for Amtrak will be multi-system locomotives like the Siemens ACS-64. They are capable of 12 kV 25 Hz AC; 12.5 kV 60 Hz AC; 25 kV 60 Hz AC; all under catenary. Regards, Volker Currently the Metro North and Amtrak specification differ but I'm sure they'll agree on the same speeds to be able to buy the same locomotive. Regards, Volker
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