-
1 Dauerstrombelastbarkeit, f
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Немецко-русский словарь нормативно-технической терминологии > Dauerstrombelastbarkeit, f
-
2 Strombelastbarkeit, f
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Немецко-русский словарь нормативно-технической терминологии > Strombelastbarkeit, f
-
3 Ansprechzeit
время замыкания магнитоуправляемого контакта
Значение интервала времени от начала воздействия управляющего магнитного поля до первого замыкания магнитоуправляемого контакта при его срабатывании
[ ГОСТ 17499-82]EN
-
FR
-
Тематики
Обобщающие термины
Синонимы
EN
DE
FR
время срабатывания электрического реле
Время от момента, когда входная воздействующая или характеристическая величина электрического реле, находящегося в начальном или исходном состоянии, принимает в заданных условиях определенное значение до момента, когда реле завершает срабатывание
[ ГОСТ 16022-83]EN
operate time
for a relay which is in the release condition (initial condition) the time interval between the instant a specified value of the input energizing quantity (characteristic quantity) is applied under specified condition and the instant when the relay switches
NOTE – This term is used only when the relay has output circuits of the same type and no precision is required according to contact time difference.
[IEV number 446-17-09]FR
temps de fonctionnement
temps d'action (terme déconseillé, utilisé pour les relais de tout ou rien)
pour un relais qui est dans l'état de repos ou dans un état initial, temps écoulé entre l'instant où la grandeur d'alimentation d'entrée ou la grandeur caractéristique prend, dans des conditions spécifiées, une valeur définie et l'instant où le relais commute
NOTE – Ce terme n'est utilisé que lorsque le relais ne comporte que des circuits de sortie de même nature et qu'aucune précision n'est nécessaire quant à la dispersion des temps de contact.
[IEV number 446-17-09]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Ansprechzeit
-
4 Betätigungszeit
время срабатывания электрического реле
Время от момента, когда входная воздействующая или характеристическая величина электрического реле, находящегося в начальном или исходном состоянии, принимает в заданных условиях определенное значение до момента, когда реле завершает срабатывание
[ ГОСТ 16022-83]EN
operate time
for a relay which is in the release condition (initial condition) the time interval between the instant a specified value of the input energizing quantity (characteristic quantity) is applied under specified condition and the instant when the relay switches
NOTE – This term is used only when the relay has output circuits of the same type and no precision is required according to contact time difference.
[IEV number 446-17-09]FR
temps de fonctionnement
temps d'action (terme déconseillé, utilisé pour les relais de tout ou rien)
pour un relais qui est dans l'état de repos ou dans un état initial, temps écoulé entre l'instant où la grandeur d'alimentation d'entrée ou la grandeur caractéristique prend, dans des conditions spécifiées, une valeur définie et l'instant où le relais commute
NOTE – Ce terme n'est utilisé que lorsque le relais ne comporte que des circuits de sortie de même nature et qu'aucune précision n'est nécessaire quant à la dispersion des temps de contact.
[IEV number 446-17-09]Тематики
EN
DE
FR
122. Время срабатывания электрического реле
D. Betätigungszeit
E. Operate time
F. Temps de fonctionnement;
Temps d’action (pour relais de tout ou rien)
Время от момента, когда входная воздействующая или характеристическая величина электрического реле, находящегося в начальном или исходном состоянии, принимает в заданных условиях определенное значение до момента, когда реле завершает срабатывание
Источник: ГОСТ 16022-83: Реле электрические. Термины и определения оригинал документа
Немецко-русский словарь нормативно-технической терминологии > Betätigungszeit
-
5 Messrelais
измерительное электрическое реле
Электрическое реле, предназначенное для срабатывания с определенной точностью при заданном значении или значениях характеристической величины
[ ГОСТ 16022-83]
измерительное реле
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]EN
measuring relay
an electrical relay intended to operate when its characteristic quantity, under specified accuracy, attains its operate value
[IEV number 446-11-03]FR
relais de mesure
relais électrique destiné à fonctionner lorsque sa grandeur caractéristique atteint dans des conditions et avec une précision spécifiées, sa valeur de fonctionnement
[IEV number 446-11-03]Тематики
Синонимы
EN
DE
FR
2. Измерительное электрическое реле
D. Messrelais
E. Measuring relay
F. Relais de mesure
Электрическое реле, предназначенное для срабатывания с определенной точностью при заданном значении или значениях характеристической величины
Источник: ГОСТ 16022-83: Реле электрические. Термины и определения оригинал документа
Немецко-русский словарь нормативно-технической терминологии > Messrelais
-
6 Ausschaltvermögen (eines Schaltgerätes oder einer Sicherung)
- отключающая способность (коммутационного аппарата или плавкого предохранителя)
отключающая способность (коммутационного аппарата или плавкого предохранителя)
Значение ожидаемого тока отключения, который способен отключать коммутационный аппарат или плавкий предохранитель при установленном напряжении в предписанных условиях эксплуатации и поведения.
Примечания
1 Напряжение устанавливается и условия предписываются в стандарте на соответствующий аппарат.
2 Для переменного тока это симметричное действующее значение периодической составляющей.
МЭК 60050(441-17-08)
[ ГОСТ Р 50030. 1-2000 ( МЭК 60947-1-99)]
отключающая способность (коммутационного аппарата или предохранителя)
Значение ожидаемого тока отключения, который коммутационный аппарат или предохранитель способен отключить при заданном напряжении в предписанных условиях применения и поведения.
Примечание - Для коммутационных аппаратов отключающая способность может быть определена в соответствии с видом тока, предусмотренного в предписанных условиях, например отключающая способность при отключении ненагруженной линии, отключающая способность при отключении ненагруженного кабеля, отключающая способность при отключении одиночной конденсаторной батареи и т. д
[ ГОСТ Р 52726-2007]
отключающая способность коммутационного аппарата
Коммутационная способность коммутационного аппарата при отключении цепи.
[ ГОСТ 17703-72]EN
breaking capacity (of a switching device or a fuse)
a value of prospective current that a switching device or a fuse is capable of breaking at a stated voltage under prescribed conditions of use and behaviour
NOTE 1 – The voltage to be stated and the conditions to be prescribed are dealt with in the relevant publications.
NOTE 2 – For switching devices, the breaking capacity may be termed according to the kind of current included in the prescribed conditions, e.g. line-charging breaking capacity, cable charging breaking capacity, single capacitor bank breaking capacity, etc.
[IEV number 441-17-08]
[IEV number 441-01-49]FR
pouvoir de coupure (d'un appareil de connexion ou d'un fusible)
une valeur de courant présumé qu'un appareil de connexion ou un fusible est capable d'interrompre sous une tension fixée dans des conditions prescrites d'emploi et de comportement
NOTE 1 – La tension à fixer et les conditions à prescrire sont précisées dans les publications particulières.
NOTE 2 – Pour les appareils de connexion, le pouvoir de coupure peut être dénommé suivant le type de courant intervenant dans les conditions prescrites, par exemple: pouvoir de coupure de lignes à vide, pouvoir de coupure de câbles à vide, pouvoir de coupure d'une batterie de condensateurs unique, etc.
[IEV number 441-17-08]
[IEV number 441-01-49]
Недопустимые, нерекомендуемые
Примечание(1)- Мнение автора карточкиТематики
- выключатель автоматический
- выключатель, переключатель
- высоковольтный аппарат, оборудование...
Синонимы
EN
- BC
- breaking capacity
- breaking capacity (of a switching device or a fuse)
- breaking current capacity
- IC
- interrupting capability
- interrupting capacity
- rupture capacity
- rupture rupturing capacity
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Ausschaltvermögen (eines Schaltgerätes oder einer Sicherung)
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