91 Class ED75-700 locomotives were built from 1971 to 1976 by Hitachi, Mitsubishi, and Toshiba, for use on the
Ou Main Line and
Uetsu Main Line, numbered ED75 701 to ED75 791. These locomotives used a 20 kV AC 50 Hz power supply. These locomotives differed from earlier examples in having PS103 cross-arm type
pantographs. 34 members of this subclass were converted to become
Class ED79 locomotives in 1988 for use on services through the undersea
Seikan Tunnel between Honshu and Hokkaido. , five Class ED75-700 locomotives remained in service, operated by JR East, with three locomotives based at Sendai and two at Akita. File:JNR ED75 757 20020731.jpg|JR East ED75 757, July 2002 ==ED75-1000==