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1 disjoncteur limiteur de courant
токоограничивающий автоматический выключатель
Выключатель с чрезвычайно малым временем отключения, в течение которого ток короткого замыкания не успевает достичь своего максимального значения.
[МЭК 60947-1]En
current-limiting circuit breaker
Circuit-breaker with a break-time short enough to prevent the short-circuit current reaching its otherwise attainable peak value.
[< size="2">IEC 60077-3, ed. 1.0 (2001-12)]
Circuit-breaker that, within a specified range of current, prevents the let-through current reaching the prospective peak value and which limits the let-through energy (I2t) to a value less than the let-through energy of a half-cycle wave of the symmetrical prospective current
NOTE 1 - Reference may be made to either the symmetrical or asymmetrical prospective peak value of let-through current.
NOTE 2 - The let-through current is also referred to as the cut-off current (see IEV 441-17-12).
NOTE 3 - Templates for the graphical representation of the cut-off current characteristic and the let-through energy characteristic are given in Figures K.2 to K.5 and examples of the use of the templates in Figures K.6 and K.7.
[IEC 60947-2, ed. 4.0, amd. 1 (2009-01)]Fr
disjoncteur limiteur de courant
Disjoncteur dont la durée de coupure est particulièrement brève en vue d’obtenir que le courant de court-circuit ne puisse atteindre son amplitude maximale
[< size="2">IEC 60077-3, ed. 1.0 (2001-12)]
Disjoncteur qui, à l'intérieur d'un domaine de courant spécifié, empêche le courant coupé limité d'atteindre la valeur crête présumée et qui limite l'énergie limitée (I2t) à une valeur inférieure à l'énergie limitée d'une demi-période du courant présumé symétrique
NOTE 1 Il peut être fait référence à la valeur crête présumée symétrique ou assymétrique du courant coupé limité.
NOTE 2 Le courant coupé limité (let-through current) est aussi nommé "cut-off current" (voir VEI 441-17-12).
NOTE 3 Les modèles de représentation graphique des caractéristiques de courant coupé limité et d'énergie limitée sont illustrés dans les Figures K.2 à K.5 et les exemples d'utilisation des modèles dans les Figures K.6 et K.7.
[IEC 60947-2, ed. 4.0, amd. 1 (2009-01)]Токоограничивающий автоматический выключатель имеет чрезвычайно малое время отключения, в течение которого ток КЗ не успевает достичь максимального значения.
Токоограничивающие автоматические выключатели ограничивают ток КЗ с помощью быстрого введения в цепь дополнительного сопротивления электрической дуги (в первый же полупериод, до того, как ток КЗ значительно возрастет) и последующего быстрого отключения КЗ, при этом ток КЗ не достигает ожидаемого расчетного максимального значения. Токоограничение начинается с некоторого значения тока, определяемого характеристикой токоогранияения.
В токоограничивающих автоматических выключателях при больших ожидаемых токах КЗ контакты, сразу же отбрасываются электродинамическими силами, вводя в цепь сопротивление дуги, и затем уже не соприкасаются, так как своевременно срабатывает электромагнитный расцепитель.
При малых токах КЗ контакты не отбрасываются, а отключение производится электромагнитным расцепителем.
[А.В.Беляев. Выбор аппаратуры, защит и кабелей в сетях 0,4 кВ. - Л.: Энергоатомиздат. 1988.]Тематики
Классификация
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EN
- current limiting circuitbreaker
- current-limiting circuit breaker
- current-limiting circuit-breaker
- limiting circuit breaker
- limiting circuit-breaker
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Франко-русский словарь нормативно-технической терминологии > disjoncteur limiteur de courant
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2 Pompidou Centre
Also known popularly as " Beaubourg". Located on Place Beaubourg, in the Marais district of Central Paris, the Centre Pompidou is one of the most visited museums in Paris, thanks to its collection of modern and contemporary European art, and its large public reference library with facilities for over 2,000 readers, its theatres and its lecture rooms. The glass steel and concrete building, designed by the Richard Rogers partnership, and opened in 1977, is one of the most remarkable examples of 1970's architecture. It is distinguished by having most of its service infrastucture (lifts, escalators, utility ducts) on the outside of the building.In May 2010, a satellite of the Pompidou Centre opened in the city of Metz, in Lorraine. This brand-new museum will show a selection of works from the Paris collection, including some of the finest, and also stage its own exhibitions.Dictionnaire Français-Anglais. Agriculture Biologique > Pompidou Centre
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