| 摘要 |
An overhead electric transmission line in which each group of at least two mutually spaced insulators or string of insulators (3) supporting a single conductor (2) or the conductors of a group of transversely spaced conductors carries means (5) for dissipating the energy arising from the fracture of an insulator or string of insulators of the group as the resultant additional load is applied to the or each sound insulator or sound string of insulators of the group, which energy dissipating means is of such a form that as the load on the or each sound insulator or sound string of insulators increases to the maximum safe working load, the energy dissipating means is not permanently extensible in a rectilinear direction substantially parallel to the longitudinal axis of the insulator or string of insulators and, as the load on the or each sound insulator or sound string of insulators exceeds the maximum safe working load and increases towards the load at which the insulator or string of insulators will fracture, the energy dissipating means smoothly and continuously extends permanently in said rectilinear direction to reduce substantially risk of fracture of the insulator or string of insulators. |
