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Area Overhead lines / Spans

IEV ref466-03-12

en
equivalent span
ruling span
fictitious single span in which tension variations due to load or temperature changes are nearly the same as in the actual spans in a section

Note – The approximate value ac of the equivalent span is calculated from:

a c a i 3 a i MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdi9qqqj=hEeeu0lXdbb a9frFj0xb9Lqpepeea0xd9s8qiYRWxGi6xij=hbba9q8aq0=yq=He9 q8qiLsFr0=vr0=vr0db8meaabaGacmGadiWaaiWabaabaiaafaaake aacaWGHbWaaSbaaSqaaiaabogaaeqaaOGaeS4qISZaaOaaaeaadaWc aaqaamaaqaeabaGaamyyamaaDaaaleaacaqGPbaabaGaaG4maaaaae qabeqdcqGHris5aaGcbaWaaabqaeaacaWGHbWaaSbaaSqaaiaabMga aeqaaaqabeqaniabggHiLdaaaaWcbeaaaaa@45C1@

where ai is the length of the span i in the section.


fr
portée équivalente, f
portée fictive dans laquelle les variations de la tension mécanique, dues aux variations de la charge et de la température, sont sensiblement égales à celles des portées réelles du canton

Note – La valeur approchée ac de la portée équivalente est:

a c a i 3 a i MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdi9qqqj=hEeeu0lXdbb a9frFj0xb9Lqpepeea0xd9s8qiYRWxGi6xij=hbba9q8aq0=yq=He9 q8qiLsFr0=vr0=vr0db8meaabaGacmGadiWaaiWabaabaiaafaaake aacaWGHbWaaSbaaSqaaiaabogaaeqaaOGaeS4qISZaaOaaaeaadaWc aaqaamaaqaeabaGaamyyamaaDaaaleaacaqGPbaabaGaaG4maaaaae qabeqdcqGHris5aaGcbaWaaabqaeaacaWGHbWaaSbaaSqaaiaabMga aeqaaaqabeqaniabggHiLdaaaaWcbeaaaaa@45C1@

ai est la longueur (de la ie portée) du canton.


ar
امتداد مكافئ

de
ideelles Spannfeld, n

es
vano regulador

fi
ekvivalenttijänne

it
campata equivalente

ja
等価径間長

no
nb ekvivalentspenn, ideelt spenn

nn ekvivalentspenn, ideelt spenn

pl
przęsło równoważne

pt
vão equivalente

sr
идеални распон, м јд

sv
normalspann

Publication date: 1990-10
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