the Current-carrying of the HV and LV cables
French translation: la capacité des cables HT et BT
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| 14:46 Jul 11, 2008 |
| English to French translations [PRO] Tech/Engineering - Construction / Civil Engineering / Electricity | |||||
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|  Selected response from: FX Fraipont (X) Belgium Local time: 14:53 | ||||
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| 4 +1 | la capacité des cables HT et BT |
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| 2 | la section des câbles HT et BT |
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Answers
33 mins confidence: 
peer agreement (net): +1
peer agreement (net): +1| the current-carrying of the hv and lv cables la capacité des cables HT et BT Explanation: current carrying (capacity) "Les fils de cuivre ronds sont d’un usage très répandu et sont normalisés en Amérique du Nord par le système American Wire Gage. Ce système assigne un numéro AWG, compris entre 4/0 et 36, à différentes grosseurs de fils de cuivre en fonction de leur diamètre. Les diamètres ont été choisis de façon à ce que le passage d’une unité AWG à la précédente corresponde à une augmentation de la section de près de 26%. Ainsi, diminuer de trois unités AWG équivaut approximativement à doubler la section du fil. La relation exacte d’un diamètre au suivant a été proposée par J.R. Brown et acceptée en 1857. Elle correspond à la racine 39e de 92, 92 étant le rapport entre 0,46 po, le diamètre du fil #4/0 et 0,005 po, le diamètre du fil #36 (39 est le nombre d’intervalles entre les #4/0 et #36). 5 Toujours en Amérique du Nord, pour des conducteurs plus gros, on utilise des cmil (circular mil). Le circular mil est défini comme l’aire d’un conducteur d’un millième de pouce. La figure 5.21 illustre la grosseur de plusieurs conducteurs usuels. Elle donne leur capacité approximative (en ampères à 30°C). Le tableau 5.1 donne les caractéristiques des fils de cuivre ronds de faible diamètre." http://www.cours.polymtl.ca/ele2400/chapitre5.pdf "4.5.2 Cable current carrying capacity The cable cross section is then sized in ... Here, the values for the current-carrying capacity of the cable, ..." http://books.google.com/books?isbn=1844074420... |
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24 mins confidence:
| the current-carrying [capacity] of the HV and LV cables la section des câbles HT et BT Explanation: It's a little odd for it to be expressed that way, so one perhaps needs to be wary here. Usually, I'd expect it to be expressed as 'current-carrying capacity' — which AFAIK is more often expressed in FR in terms of the cross-sectional area, i.e. 'section'. There is a direct correlation between cross-sectional area and theoretical cureent capacity. HOWEVER, it depends a bit on just how these are being checked; since it is expressed slightly oddly, perhaps it means 'how much current the cables are actually carrying'. Personally, if that were the intended sense, I as an engineer wouldn't express it that way; but the writer may have not been especially careful with the language, so an ambiguioty unfortunately exists. -------------------------------------------------- Note added at 3 hrs (2008-07-11 18:46:11 GMT) -------------------------------------------------- That's my whole point. Normally, 'current-carrying' would be associated with 'capacity' — in which case, the 'carrying' has no translation value in FR, and you should translate it simply as 'current capacity' — it's just 'the capacity to carry current' However, as your context seems to miss out the 'capacity', it introduces this question that it could conceivably be referring to 'the current actually being carried' — although in that case, 'carrying' is not good EN. The trouble is, an engineer who is not a linguist might regard it as 'the current the conductor is carrying' It all depends whether these checks yield a current measurement, or a capacity measurement — the latter will still of course be expressed in amperes, but will be derived by measurement of the physical dimensions (i.e. section) of the conductors. -------------------------------------------------- Note added at 4 hrs (2008-07-11 18:52:07 GMT) -------------------------------------------------- As FX's answer has shown, immediately you start talking about 'current (-carrying) capacity', you start talking about conductor diameter, or by implication, cross-section. Although cables at the domestic level are indeed often expressed as 15 A, for example, in practice, the actual current capacity (as distinct from the much higher fusing capacity!) depends on so many external factors, a much more useful and meaningful measure of a conductor's potential current capacity is to refer to its cross-sectional area ('section' in FR) — so we might talk about a 16 mm² cable, for example, which will be rated for carrying different currents according to how it is installed and being used. This way of expressing things is particularly common in industrial situations like yours seems to be. And of course, restorspectively, you can't actually measure the current capacity of a cable; you can only measure its physical dimensions, from which you can then infer a likely current rating, depending on the conditions of use. |
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