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21 Uref
классификационное напряжение ОПН
Uкл
Максимальное (амплитудное) значение напряжения промышленной частоты, деленное на √2, которое должно быть приложено к ОПН для получения классификационного тока. Классификационное напряжение многоэлементного ОПН определяется как сумма классификационных напряжений отдельных элементов.
[ ГОСТ Р 52725-2007]EN
reference voltage of an arrester, Uref
peak value of power-frequency voltage divided by √2 which is applied to the arrester to obtain the reference current
NOTE 1 The reference voltage of a multi-unit arrester is the sum of the reference voltages of the individual units.
NOTE 2 Measurement of the reference voltage is necessary for the selection of a correct test sample in the operating duty test.
IEC 60099-4, ed. 2.0 (2004-05)FR
tension de référence d'un parafoudre, Uref
valeur de crête divisée par √2 de la tension à fréquence industrielle qui est appliquée aux bornes du parafoudre pour que celui-ci soit parcouru par le courant de référence.
NOTE 1 La tension de référence d'un parafoudre à plusieurs éléments est la somme des tensions de référence des éléments séparés.
NOTE 2 La mesure de la tension de référence est nécessaire au choix d'un échantillon d'essai convenable dans l'essai de fonctionnement.
IEC 60099-4, ed. 2.0 (2004-05)Тематики
- высоковольтный аппарат, оборудование...
EN
FR
Франко-русский словарь нормативно-технической терминологии > Uref
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22 protection à comparaison directionnelle
направленная защита с телеканалом
Защита с расширенной зоной, использующая телеканал связи, обычно не дистанционная, в которой для элемента, измеряющего сдвиг фаз, на каждом конце защищаемого участка используются напряжения или токи в месте установки защиты.
[Разработка типовых структурных схем микропроцессорных устройств РЗА на объектах ОАО "ФКС ЕЭС". Пояснительная записка. Новосибирск 2006 г.]
ВЧ-защита со сравнением направлений мощности по концам защищаемой линии
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]EN
directional comparison protection
overreach protection, usually not a distance protection, using telecommunication, in which the relative operating conditions of phase angle measuring elements, at each end of the protected section, are compared using a locally derived voltage or current as a reference
Note – In the USA, the term "directional comparison protection" is applied to any non-unit protection using telecommunication, with or without overreaching or underreaching distance protection.
[ IEV ref 448-15-10]FR
protection à comparaison directionnelle
protection à portée étendue et à liaison de transmission, qui habituellement n'est pas une protection de distance, dans laquelle les conditions de fonctionnement relatives des éléments de mesure d'angle de phase à chaque extrémité de la section protégée sont comparées, en utilisant comme référence une tension ou un courant obtenus localement
Note – Aux Etats-Unis d'Amérique, le terme anglais "directional comparison protection" est utilisé pour toutes les protections à sélectivité relative de section et à liaison de transmission, qu'elles comportent ou non une protection de distance à portée étendue ou réduite.
[ IEV ref 448-15-10]Тематики
Синонимы
EN
DE
- Richtungsvergleichsschutz, m
FR
Франко-русский словарь нормативно-технической терминологии > protection à comparaison directionnelle
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