| 摘要 |
<p>PURPOSE:To obtain a spacer to ground in which no weight of a cable will be applied to an aerial earth wire by setting the length of the spacer to ground equipped between the overhead earth wire and the cable almost equal to the spacing in at least the maximum relaxed state of both lines. CONSTITUTION:Let the relaxation degree of an overhead earth wire 4 be Dg and that of a cable 2 be Da. If the distance between the mounting sections of the overhead earth wire 4 and the cable 2 against a pylon 1 is H, the length of a spacer to ground 5 between both lines is set to be L>=H+Da-Dg. Both lines 4 and 2 can be kept with clearance by the spacer 5 to ground set to the length L almost equal to the spacing in the maximum relaxed state of both lines without causing deflection on the cable 2 side.</p> |
