To provide a connection structure for jumper wires which can absorb the increase of the slack of the jumper wire occurring in drawing a cable for keeping the degree of slackening between pylons constant when the cable elongates, thereby being able to avoid a dangerous state caused by the drop of the fatigue strength of the jumper wire and the reduction of a separation distance for insulation between the jumper wire and a lower phase of pylon arm metal.
When the cable 8 elongates according to a temperature rise, a slack suppressor mobile arm 7a is drawn near by the length of its elongation to the side of a strain insulator device 2, and the cable 8 is drawn near accompanied the drawing, too. At this time, one cable anchoring clamp 6 is drawn near likewise, so that the slack of the jumper wire 9 increases. A supporting insulator 3 is arranged so that it falls down in the same direction with the direction of the drawing by the restitutive force of a levellable supporting insulator mounting seat 4b so as to absorb the increase.
OTAKA KAZUYOSHI
IWAMA SHIGEMI
KAGAMI TOMOHIRO
