-
1 courant de référence d'un parafoudre
классификационный ток ОПН
Iкл
Амплитудное значение (более высокое амплитудное значение из двух полярностей, если ток асимметричен) активной составляющей тока промышленной частоты, которое используется для определения классификационного напряжения ОПН и нормируется изготовителем.
[ ГОСТ Р 52725-2007]EN
reference current of an arrester
peak value (the higher peak value of the two polarities if the current is asymmetrical) of the resistive component of a power-frequency current used to determine the reference voltage of the arrester
NOTE 1 The reference current will be high enough to make the effects of stray capacitances at the measured reference voltage of the arrester units (with designed grading system) negligible and is to be specified by the manufacturer.
NOTE 2 Depending on the nominal discharge current and/or line discharge class of the arrester, the reference current will be typically in the range of 0,05 mA to 1,0 mA per square centimetre of disc area for single column arresters.
[IEC 60099-4, ed. 2.0 (2004-05)]FR
courant de référence d'un parafoudre
valeur de crête (la plus grande des deux polarités si le courant est dissymétrique) de la composante résistive du courant à fréquence industrielle utilisée pour déterminer la tension de référence d'un parafoudre.
NOTE 1 Il convient que le courant de référence soit suffisamment élevé pour rendre négligeables les effets des capacités parasites aux tensions de référence mesurées sur les éléments de parafoudre (avec leur système de répartition) et qu’il soit spécifié par le constructeur.
NOTE 2 Fonction du courant de décharge nominal et/ou de la classe de décharge de ligne du parafoudre, il convient que le courant de référence soit typiquement dans la gamme de 0,05 mA à 1,0 mA par centimètre carré de surface de disque pour les parafoudres à colonne unique
[IEC 60099-4, ed. 2.0 (2004-05)]Тематики
- высоковольтный аппарат, оборудование...
EN
FR
Франко-русский словарь нормативно-технической терминологии > courant de référence d'un parafoudre
См. также в других словарях:
High grading — The term high grading in forestry and fishing relates to selectively harvesting goods, to “ cut the best and leave the rest ”. In mining, it is a term for theft. ForestryIn forestry, high grading is a selective type of timber harvesting that… … Wikipedia
high-grading — noun see high grade II … Useful english dictionary
high-grading — noun Date: 1974 the practice of selecting only the most healthy or valuable individuals in harvesting a natural resource (as timber or fish) … New Collegiate Dictionary
high grading — the discarding of a portion of a vessel s legal catch that could have been sold to have a higher or larger grade of fish that bring higher prices. It may occur in quota and non quota fisheries. Generally illegal as fish resources are wasted. Also … Dictionary of ichthyology
high-grade — high grader, n. /huy grayd /, adj., v., high graded, high grading. adj. 1. of excellent or superior quality. 2. (of ore) yielding a relatively large amount of the metal for which it is mined. v.t. 3. to steal (rich ore) from a mine. [1875 80] * * … Universalium
Grading (tumors) — In pathology, grading is a measure of the cell appearance in tumors and other neoplasms. Some pathology grading systems apply only to malignant neoplasms (cancer); others apply also to benign neoplasms. The neoplastic grading is a measure of cell … Wikipedia
Grading — Die Bezeichnung Grading (englisch to grade ‚einteilen, in eine Rangfolge ordnen‘) wird im Zusammenhang mit der Beurteilung eines Tumors benutzt, um den Differenzierungsgrad des Krebsgewebes anzugeben, d. h. das Ausmaß, in dem es von den … Deutsch Wikipedia
Buckhorn High School (New Market, Alabama) — Buckhorn High School is located in New Market in northern Madison County, Alabama. A National Blue Ribbon School, it is known for its baseball, basketball, football, band and softball teams as well as a high grading average. It is located at the… … Wikipedia
Academic grading in North America — The following is a summary of the academic grading systems in North America. Canada In the Canadian province of Ontario, another system is placed that replaces the A–F system. This system was instituted by the provincial government in around 2001 … Wikipedia
Coin grading — In coin collecting coin grading is the process of determining the grade or condition of a coin, one of the key factors in determining its value as a collector s item. The grading of a coin includes the analysis of several criteria, the most… … Wikipedia
Color grading — or colour painting, is the process of altering and enhancing the color of a motion picture, video image, or still image either electronically, photo chemically or digitally. The photo chemical process is also referred to as color timing and is… … Wikipedia
