Amtrak's 60 Hz traction power system

Amtrak operates a 60 Hz traction power system along the Northeast Corridor between New Haven, Connecticut, and Boston, Massachusetts. This system was built in the late 1990s and supplies locomotives with power from an overhead catenary system at 25 kV alternating current with a frequency of 60 Hz. The system is also commonly known as the Northend Electrification, in contrast to the Southend Electrification that runs between New York City and Washington, D.C.