This paper describes the manipulator system for working on live overhead distribution lines (system voltage:6.6 kV), which is now under joint development led by Tokyo Electric Power Co., Inc.Specific reference is made to the system concepts, system configuration, system design, and serviceability verification using real-scale model distribution lines.The system research and development project was started in 1984. In 1985, a functional model was developed and tested, which was followed by the development of a vehicle-mounted manipulator system based on the findings of the functional model test. Late in 1987, the system serviceability test was initiated using real-scale model lines.
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