-
101 skinned current
поверхностный ток
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]Тематики
- электротехника, основные понятия
EN
Англо-русский словарь нормативно-технической терминологии > skinned current
-
102 conduction current
ток проводимости
Явление направленного движения свободных носителей электрического заряда в веществе или в пустоте, количественно характеризуемое скалярной величиной, равной производной по времени от электрического заряда, переносимого свободными носителями заряда сквозь рассматриваемую поверхность.
[ ГОСТ Р 52002-2003]EN
(electric) current
(conduction) current
scalar quantity equal to the flux of the electric current density J through a given directed surface S:
where endA is the vector surface element
NOTE 1 – The electric current through a surface is equal to the limit of the quotient of the electric charge transferred through that surface during a time interval by the duration of this interval when this duration tends to zero.
NOTE 2 – For charge carriers confined to a surface, the electric current is defined through a curve of this surface (see the note to term “lineic electric current”).
[IEV number 121-11-13]FR
courant (électrique), m
courant (de conduction), m
grandeur scalaire égale au flux de la densité de courant électrique J à travers une surface orientée donnée S:
où endA est l'élément vectoriel de surface
NOTE 1 – Le courant électrique à travers une surface est égal à la limite du quotient de la charge électrique traversant cette surface pendant un intervalle de temps par la durée de cet intervalle lorsque cette durée tend vers zéro.
NOTE 2 – Pour des porteurs de charge confinés sur une surface, le courant électrique est défini à travers une courbe de cette surface (voir la note au terme "densité linéique de courant").
[IEV number 121-11-13]Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- (elektrische) Stromstärke
- Leitungsstromstärke
- Stromstärke, (elektrische)
FR
Англо-русский словарь нормативно-технической терминологии > conduction current
-
103 continuous current-carrying capacity
длительная пропускная способность по току
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]Тематики
- электротехника, основные понятия
EN
(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
Англо-русский словарь нормативно-технической терминологии > continuous current-carrying capacity
-
104 continuous current
(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
непрерывный ток
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999]Тематики
- электротехника, основные понятия
EN
Англо-русский словарь нормативно-технической терминологии > continuous current
-
105 total electric current
ток
Скалярная величина, равная сумме электрического тока проводимости, электрического тока переноса и электрического тока смещения сквозь рассматриваемую поверхность.
[ ГОСТ Р 52002-2003]EN
total electric current
scalar quantity given by the flux of the total current density Jt through a given directed surface S:
where endA is the vector surface element
NOTE – The total electric current It is given by
It = I + ID
where I is the electric current and ID the displacement current.
[IEV number 121-11-45]FR
courant électrique total, m
grandeur scalaire égale au flux de la densité de courant total Jt à travers une surface orientée donnée S:
où endA est l'élément vectoriel de surface
NOTE – Le courant électrique total It est donné par
It = I + ID
où I est le courant électrique et ID le courant de déplacement.
[IEV number 121-11-45]Тематики
- электротехника, основные понятия
Действия
- включать ток
- длительно пропускать ток
- коммутировать ток
- ограничивать ток
- отключать ток
- потреблять ток
- проводить ток
- пропускать ток
Синонимы
EN
DE
FR
Англо-русский словарь нормативно-технической терминологии > total electric current
-
106 displacement current
ток смещения
Совокупность электрического тока смещения в пустоте и электрического тока поляризации, количественно характеризуемая скалярной величиной, равной производной по времени от потока электрического смещения сквозь рассматриваемую поверхность.
[ ГОСТ Р 52002-2003]EN
displacement current
scalar quantity equal to the flux of the displacement current density JD through a given directed surface S:
where endA is the vector surface element
[IEV number 121-11-43]FR
courant de déplacement, m
grandeur scalaire égale au flux de la densité de courant de déplacement JD à travers une surface orientée donnée S:
où endA est l'élément vectoriel de surface
[IEV number 121-11-43]Тематики
- электротехника, основные понятия
Синонимы
EN
DE
FR
Англо-русский словарь нормативно-технической терминологии > displacement current
-
107 reference current of an arrester
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
Англо-русский словарь нормативно-технической терминологии > reference current of an arrester
-
108 anode current surface
anode current surface Anodenstrom(ober)fläche fEnglish-German dictionary of Electrical Engineering and Electronics > anode current surface
-
109 counter-current condenser
English-Russian big polytechnic dictionary > counter-current condenser
-
110 reel surface brake
English-Russian big polytechnic dictionary > reel surface brake
-
111 telluric current
Electrical currents in the earth's surface, caused by the same phenomenon that generates the Northern Lights. -
112 поверхностное течение
Большой англо-русский и русско-английский словарь > поверхностное течение
-
113 поверхностный ток
Большой англо-русский и русско-английский словарь > поверхностный ток
-
114 поверхностное течение
Англо-русский словарь технических терминов > поверхностное течение
-
115 поверхностный ток
Англо-русский словарь технических терминов > поверхностный ток
-
116 радиобуй-трассер поверхностных течений
Большой англо-русский и русско-английский словарь > радиобуй-трассер поверхностных течений
-
117 подповерхностное течение
Большой англо-русский и русско-английский словарь > подповерхностное течение
-
118 подповерхностное течение
Англо-русский словарь технических терминов > подповерхностное течение
-
119 ESC
1) Общая лексика: клавиша ESC2) Компьютерная техника: Entire System Crashes, Environments For Scientific Computation, European Communication Satellite, engineering service curcuit, ESCape (PC button)3) Медицина: European Society of Cardiology (Европейское общество кардиологов), СКЭ, стволовые клетки эмбрионов, embryonic stem cells4) Военный термин: Electronic Systems Center, Electronic Systems Command, Engineer Study Center, Equilibrator Support Cover, European Security Conference, electronic switching center, equipment serviceability criteria, equipment storage container, Electronic Security Command (U.S. Air Force), Electronic Security Command5) Техника: European service center, electric surface current, electromechanical stop clock, electronic scan converter, electronic shop computer, electrostatic collector, equipment serviceability criterion6) Страхование: Estonian Shipping Company, Tallin7) Автомобильный термин: electronic spark control - электронное зажигание, electronic spark control system (Ford), cистема курсовой устойчивости, система динамической стабилизации, электронный контроль стабилизации, электронный контроль устойчивости, Electronic Stability Control (электронная система безопасности /автомобиля/)8) Грубое выражение: Eat Sleep And Crap9) Сокращение: Economic and Social Committee, Electronic Security Command (Now defunct (USA)), Electronic Stills Camera, Electronic Systems Center (USAF), Electronic Systems Command (USAF), Engine Supervisory Control, English Speaking Country, Enhanced Satellite Capability, Escape key on computer terminal keyboard, European Security Community, European Space Conference, escutcheon, Electronic Systems Center (USA; AFMC), Escape character, Emergency Shelter Coordination10) Университет: Earth Science Club11) Электроника: Electrostatic chuck12) Вычислительная техника: exit from the program instruction13) Нефть: European Seismological Commission, критерий эксплуатационной надёжности оборудования (equipment serviceability criterion), Exploration Service Contract, договор на проведение геологоразведочных работ14) Иммунология: embryonic stem cell15) Банковское дело: (код сектора экономики) КСЭ (код сектора экономики)16) Транспорт: Electronic Spark Control, Electronic Speed Control17) Деловая лексика: Executive Steering Committee18) Глоссарий компании Сахалин Энерджи: Eastern Sakhalin current, Engineering service contract, Engineering support contract19) Инвестиции: Enterprises Support Center20) Сетевые технологии: символ начала управляющей последовательности, спецсимвол21) ЕБРР: environmental screening category22) Полимеры: Electrochemical Standards Committee, environmental stress cracking23) Химическое оружие: environmental studies contract, equipment supply contractor24) Расширение файла: EISA System Component25) Нефть и газ: Emergency Situation Commission, Emergency Services Coordinator26) Должность: Essential Selection Criteria27) Программное обеспечение: Extended Static Checking28) AMEX. Emeritus Corporation -
120 esc
1) Общая лексика: клавиша ESC2) Компьютерная техника: Entire System Crashes, Environments For Scientific Computation, European Communication Satellite, engineering service curcuit, ESCape (PC button)3) Медицина: European Society of Cardiology (Европейское общество кардиологов), СКЭ, стволовые клетки эмбрионов, embryonic stem cells4) Военный термин: Electronic Systems Center, Electronic Systems Command, Engineer Study Center, Equilibrator Support Cover, European Security Conference, electronic switching center, equipment serviceability criteria, equipment storage container, Electronic Security Command (U.S. Air Force), Electronic Security Command5) Техника: European service center, electric surface current, electromechanical stop clock, electronic scan converter, electronic shop computer, electrostatic collector, equipment serviceability criterion6) Страхование: Estonian Shipping Company, Tallin7) Автомобильный термин: electronic spark control - электронное зажигание, electronic spark control system (Ford), cистема курсовой устойчивости, система динамической стабилизации, электронный контроль стабилизации, электронный контроль устойчивости, Electronic Stability Control (электронная система безопасности /автомобиля/)8) Грубое выражение: Eat Sleep And Crap9) Сокращение: Economic and Social Committee, Electronic Security Command (Now defunct (USA)), Electronic Stills Camera, Electronic Systems Center (USAF), Electronic Systems Command (USAF), Engine Supervisory Control, English Speaking Country, Enhanced Satellite Capability, Escape key on computer terminal keyboard, European Security Community, European Space Conference, escutcheon, Electronic Systems Center (USA; AFMC), Escape character, Emergency Shelter Coordination10) Университет: Earth Science Club11) Электроника: Electrostatic chuck12) Вычислительная техника: exit from the program instruction13) Нефть: European Seismological Commission, критерий эксплуатационной надёжности оборудования (equipment serviceability criterion), Exploration Service Contract, договор на проведение геологоразведочных работ14) Иммунология: embryonic stem cell15) Банковское дело: (код сектора экономики) КСЭ (код сектора экономики)16) Транспорт: Electronic Spark Control, Electronic Speed Control17) Деловая лексика: Executive Steering Committee18) Глоссарий компании Сахалин Энерджи: Eastern Sakhalin current, Engineering service contract, Engineering support contract19) Инвестиции: Enterprises Support Center20) Сетевые технологии: символ начала управляющей последовательности, спецсимвол21) ЕБРР: environmental screening category22) Полимеры: Electrochemical Standards Committee, environmental stress cracking23) Химическое оружие: environmental studies contract, equipment supply contractor24) Расширение файла: EISA System Component25) Нефть и газ: Emergency Situation Commission, Emergency Services Coordinator26) Должность: Essential Selection Criteria27) Программное обеспечение: Extended Static Checking28) AMEX. Emeritus Corporation
См. также в других словарях:
surface current — paviršinė srovė statusas T sritis fizika atitikmenys: angl. surface current vok. Oberflächenstrom, m rus. поверхностный ток, m pranc. courant de surface, m; courant superficiel, m … Fizikos terminų žodynas
surface current density — paviršinės srovės tankis statusas T sritis fizika atitikmenys: angl. surface current density; surface density of current vok. Flächenstromdichte, f; Oberflächenstromdichte, f rus. плотность поверхностного тока, f; поверхностная плотность тока, f… … Fizikos terminų žodynas
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Current meter — Current Cur rent, n. [Cf. F. courant. See {Current}, a. ] [1913 Webster] 1. A flowing or passing; onward motion. Hence: A body of fluid moving continuously in a certain direction; a stream; esp., the swiftest part of it; as, a current of water or … The Collaborative International Dictionary of English
Current mill — Current Cur rent, n. [Cf. F. courant. See {Current}, a. ] [1913 Webster] 1. A flowing or passing; onward motion. Hence: A body of fluid moving continuously in a certain direction; a stream; esp., the swiftest part of it; as, a current of water or … The Collaborative International Dictionary of English
Current wheel — Current Cur rent, n. [Cf. F. courant. See {Current}, a. ] [1913 Webster] 1. A flowing or passing; onward motion. Hence: A body of fluid moving continuously in a certain direction; a stream; esp., the swiftest part of it; as, a current of water or … The Collaborative International Dictionary of English
Surface of Eceon — (or Surface of Eceyon), is a supergroup of sorts whose music has been described as ambient, space rock. This unit, which has a penchant for the phantasmagoric, includes members of from Landing and Yume Bitsu, two notable psychedelic rock groups.… … Wikipedia