%0 Generic %1 moreau1978designing %A MOREAU, M %A RIGOET, P %A DALLE, B %D 1978 %K Calculation-assumption Cascade Damage Hardware Overhead-line Sliding-clamp Suspension-clamp %T DESIGNING OF OVERHEAD LINES IN VIEW OF AVOIDING CASCADES USE OF CONTROLLED SLIDING SUSPENSION CLAMPS %X Damages resulting from line towers cascade, in case of ice or soft snow loadings are well known by electricians who try to prevent this by various methods. The idea developed by E.D.F. consists in designing the towers for the most representative loading cases in view of the stress which the increased weight of the conductors puts on them ; cases of unequal ice loading are included. In order to limit longitudinal loads, conductors are fastened in suspension clamps which allow them to slide as soon as the load goes beyond the selected threshold value. For many years now, this type of clamp has proved its worthiness as a mechanical fuse in preventing cascade tower breakdowns. A calculation program makes it possible to define the minimum length and radius of curvature of the clamp cradle in tenns of the required operating conditions: the winding angle of the conductor, the vertical load applied to the clamp. The following conductor parameters are taken into account : pressures allowed between conductor strands and between the strands and the cradle of the clamp and the stresses induced into the conductor strands by the loads which the conductor must sustain. This calculation method can be applied to any type of conductor. The main ·technological aängements adopted for the controlled sliding suspension clamps are explained. The sliding process of the conductor in the clamp, in case of a longitudinal load, is examined within various operating conditions of the conductor, basically with ice loads and with accidental conditions such as conductor breakdowns.

@conference{moreau1978designing, abstract = {Damages resulting from line towers cascade, in case of ice or soft snow loadings are well known by electricians who try to prevent this by various methods. The idea developed by E.D.F. consists in designing the towers for the most representative loading cases in view of the stress which the increased weight of the conductors puts on them ; cases of unequal ice loading are included. In order to limit longitudinal loads, conductors are fastened in suspension clamps which allow them to slide as soon as the load goes beyond the selected threshold value. For many years now, this type of clamp has proved its worthiness as a mechanical fuse in preventing cascade tower breakdowns. A calculation program makes it possible to define the minimum length and radius of curvature of the clamp cradle in tenns of the required operating conditions: the winding angle of the conductor, the vertical load applied to the clamp. The following conductor parameters are taken into account : pressures allowed between conductor strands and between the strands and the cradle of the clamp and the stresses induced into the conductor strands by the loads which the conductor must sustain. This calculation method can be applied to any type of conductor. The main ·technological a"angements adopted for the controlled sliding suspension clamps are explained. The sliding process of the conductor in the clamp, in case of a longitudinal load, is examined within various operating conditions of the conductor, basically with ice loads and with accidental conditions such as conductor breakdowns.}, added-at = {2020-05-04T00:06:05.000+0200}, author = {MOREAU, M and RIGOET, P and DALLE, B}, biburl = {https://www.bibsonomy.org/bibtex/25aa7329c82e17526cd63b6a3f444bdf1/chkokalis}, interhash = {dbf34fa98d9737f994b86fffd7d2bb2e}, intrahash = {5aa7329c82e17526cd63b6a3f444bdf1}, keywords = {Calculation-assumption Cascade Damage Hardware Overhead-line Sliding-clamp Suspension-clamp}, timestamp = {2020-05-06T13:11:44.000+0200}, title = {DESIGNING OF OVERHEAD LINES IN VIEW OF AVOIDING CASCADES USE OF CONTROLLED SLIDING SUSPENSION CLAMPS}, year = 1978 }