| 摘要 |
PROBLEM TO BE SOLVED: To easily pull in or raise a power cable even within a bottleneck path having only a limited space.SOLUTION: An installation method of a power cable for installing the power cable in an underground path includes a power cable extension step of moving the power cable on the underground path by passing the power cable between a first rotor and a second rotor which are rotated in such a manner that the directions of rotation are opposite to each other. In the power cable extension step, by driving the first rotor and the second rotor independently of each other, a direction of travel of the power cable is changed with a contact of the first and second rotors and the power cable as an origin, and the power cable is moved in a curved manner. |
