| 摘要 |
A tension control arm of an extra-high voltage transmission line is provided to easily recognize a current conducting through an emitting light of a LED by mounting an inducing current detection device between a jumper wire and a supporting bar. A tension control arm of an extra-high voltage transmission line includes an arm member, insulators(200,200'), a tension control device, a jumper wire, and an inducing current detection device(400). The arm member is horizontally installed in a top surface of an electric pole(P). One end of the insulator is mounted to a transmission line(L). The other end of the insulator is mounted to shackles(340,340'). The tension control device is mounted on a top surface of the arm member. The tension control device automatically controls contraction or expansion of the transmission line according to a temperature change. The jumper wire is connected between the transmission lines in order to transfer a high voltage current. A top part of the inducing current detection device is installed in a bottom part of the arm member. A bottom part of the inducing current detection device is fitted in an outer surface of the jumper wire. |
