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Area Overhead lines / Spans

IEV ref 466-03-12

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

ko
등가 경간

ja
等価径間長

mn
эквивалент алслалт

no
nb ekvivalentspenn, ideelt spenn

no
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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