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1 характеристика тока отсечки (характеристика пропускания тока)
характеристика тока отсечки (характеристика пропускания тока)
Кривая, отражающая зависимость тока отсечки от ожидаемого тока в указанных рабочих условиях.
Примечание.
В случае переменного тока значения токов отсечки — это максимальные значения, которые могут быть достигнуты при любой степени асимметрии.
В случае постоянного тока значения токов отсечки — это максимальные значения, достигнутые при указанной постоянной времени.
МЭК 60050(441-17-14).
[ ГОСТ Р 50030. 1-2000 ( МЭК 60947-1-99)]EN
cut-off (current) characteristic
let-through (current) characteristic
a curve giving the cut-off current as a function of the prospective current, under stated conditions of operation
NOTE – In the case of a.c., the values of the cut-off currents are the maximum values which can be reached whatever the degree of asymmetry. In the case of d.c., the values of the cut-off currents are the maximum values reached related to the time constant as specified.
[IEV number 441-17-14]FR
caractéristique de courant coupé limité
courbe donnant, pour des conditions déterminées de fonctionnement, le courant coupé limité en fonction du courant présumé
NOTE – En courant alternatif, les valeurs du courant coupé limité sont les valeurs maximales quel que soit le degré d'asymétrie. En courant continu, ce sont les valeurs du courant coupé limité maximales atteintes compte tenu de la constante de temps spécifiée.
[IEV number 441-17-14]
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Русско-французский словарь нормативно-технической терминологии > характеристика тока отсечки (характеристика пропускания тока)
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2 небаланс напряжений
небаланс напряжений
Отличие по модулю значения хотя бы одного из фазных или линейных напряжений многофазной системы электроснабжения от значений напряжений других фаз.
[ ГОСТ 23875-88]EN
voltage unbalance
phenomenon due to the differences between voltage deviations on the various phases, at a point of a polyphase system, resulting from differences between the phase currents or geometrical asymmetry in the line
[IEV number 604-01-29]
voltage unbalance (imbalance)
in a polyphase system, a condition in which the magnitudes of the phase voltages or the phase angles between consecutive phases are not all equal (fundamental component)
NOTE In three phase systems, the degree of inequality is usually expressed as the ratio of the negative and zero sequence components to the positive sequence component. In this technical report, voltage unbalance is considered in relation to three-phase systems and negative sequence only
[IEC 61000-3-13, ed. 1.0 (2008-02)]
voltage unbalance
condition in a polyphase system in which the r.m.s. values of the line voltages (fundamental component), and/or the phase angles between consecutive line voltages, are not all equal
NOTE 1 The degree of the inequality is usually expressed as the ratios of the negative- and zero-sequence components to the positive-sequence component.
NOTE 2 In this standard, voltage unbalance is considered in relation to 3-phase systems.
[IEC 61000-4-30, ed. 2.0 (2008-10)]FR
déséquilibre des tensions d'un réseau
phénomène résultant des différences de charge ou des dissymétries géométriques de lignes et qui provoque des différences entre les écarts de tension sur les diverses phases en un point d'un réseau polyphasé
[IEV number 604-01-29]
déséquilibre de tension
dans un réseau d’énergie électrique polyphasé, état dans lequel les valeurs efficaces des tensions entre conducteurs (composante fondamentale), et/ou les différences de phase entre conducteurs successifs, ne sont pas toutes égales
NOTE 1 Le taux de déséquilibre s’exprime habituellement par le rapport de la composante inverse ou homopolaire à la composante directe.
NOTE 2 Dans la présente norme, le déséquilibre de tension est relatif aux réseaux triphasés
[IEC 61000-4-30, ed. 2.0 (2008-10)]Параллельные тексты EN-RU
Voltage unbalance
Voltage unbalance on the most unbalanced phase, displayed as a percentage of Vavg.
[Schneider Electric]Небаланс напряжений
Самое значительное отличие по модулю значения одного из линейных напряжений, выраженное в процентах от среднего напряжения Vavg.
[Перевод Интент]
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Русско-французский словарь нормативно-технической терминологии > небаланс напряжений
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