-
21 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
-
22 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
-
23 Stadtentwicklungsdokument
документ городского развития
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
urban development document
A written or printed text furnishing proposals or procedures for the improvement of living conditions, especially housing, for the inhabitants of a city or densely populated area. (Source: RHW)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Stadtentwicklungsdokument
-
24 Tal
долина
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
valley
Any low-lying land bordered by higher ground; especially an elongate, relatively large, gently sloping depression of the Earth's surface, commonly situated between two mountains or between ranges of hills or mountains, and often containing a stream with an outlet. It is usually developed by stream erosion, but may be formed by faulting. (Source: BJGEO)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Tal
-
25 Viehbestand
домашний скот
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
livestock
Cattle, horses, and similar animals kept for domestic use especially on a farm. (Source: CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Viehbestand
-
26 Baumzucht
древоводство
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
arboriculture
The planting and care of woody plants, especially trees. (Source: AMHER)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Baumzucht
-
27 Bahnhof (Eisenbahn)
железнодорожная станция
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
railway station
A place along a route or line at which a train stops to pick up or let off passengers or goods, especially with ancillary buildings and services. (Source: CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Bahnhof (Eisenbahn)
-
28 ländliches Recht
- закон, касающийся сельских районов
закон, касающийся сельских районов
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
rural law
A binding rule or body of rules prescribed by a government pertaining to matters of importance to residents of sparsely populated regions, especially agricultural and other economic issues. (Source: RUR)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > ländliches Recht
-
29 Agrarumweltrecht
законодательство в области сельского хозяйства
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
environmental legislation on agriculture
A binding rule or body of rules prescribed by a government to regulate any aspect of farm and livestock production that poses a threat to ecological integrity and human health, especially the use of pesticides, fertilizers and land. (Source: TOE / BLD)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Agrarumweltrecht
-
30 Naturschutzgebiet
заповедник
Охраняемая территория или акватория, на которой поддерживается в естественном состоянии весь природный или историко-архитектурный комплекс и ведутся научные исследования
[Терминологический словарь по строительству на 12 языках (ВНИИИС Госстроя СССР)]EN
DE
FR
заповедник природный
Заповедник, являющийся уникальным участком природы
[Терминологический словарь по строительству на 12 языках (ВНИИИС Госстроя СССР)]EN
DE
FR
национальный заповедник
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
national reserve
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
природный заповедник
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
nature reserve
Areas allocated to preserve and protect certain animals and plants, or both. They differ from national park, which are largely a place for public recreation, because they are provided exclusively to protect species for their own sake. Endangered species are increasingly being kept in nature reserves to prevent them from extinction, particularly in India, Indonesia and some African countries. Natural reserves were used once to preserve the animals that landowners hunted, but, in the 19th century, they became places where animals were kept to prevent them from dying out. Special refuges and sanctuaries are also often designated to protect certain species or groups of wild animals or plants, especially if their numbers and distribution have been significantly reduced. They also serve as a place for more plentiful species to rest, breed or winter. Many parts of the world also have marine and aquatic reserves to protect different species of sea or freshwater plant and animal life. (Source: WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Naturschutzgebiet
-
31 Volksfürsorgeanhörung
запрос по поводу общественной полезности
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
public benefit inquiry
An investigation, especially a formal one conducted into a matter of public utility by a body constituted for that purpose by a government, local authority, or other organization. (Source: CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Volksfürsorgeanhörung
-
32 Wasserversalzung
засоление воды
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
water salination
Process by which water becomes more salty, found especially in hot countries where irrigation is practised. (Source: PHC)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Wasserversalzung
-
33 Erholungsgebiet
зона отдыха
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
recreational area
A piece of publicly owned land, especially in a town, used for sports and games. (Source: CAMB)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Erholungsgebiet
-
34 zoologischer Garten
зоологический сад
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
zoological garden
Area in which animals, especially wild animals, are kept so that people can go and look at them, or study them. (Source: CAMB)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > zoologischer Garten
-
35 Pflanzenbefall
инвазия посевов сельскохозяйственных культур
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
infestation of crops
Invasion of crop by parasites. Among vertebrate animals, many crop pests are mammals, especially in the order of rodents and birds. Among invertebrates, certain species of gastropods and a large number of roundworms from the class of nematodes harm crops. The most varied and numerous species of crop pests are arthropods-insects, arachnids and some species of millipedes and crustaceans. Diseases vary from viral, bacterial, and nutritional to fungal, environmental and non-specific. The FAO has estimated that annual worldwide losses done by plant pests and diseases amount to approximately 20-25% of the potential worldwide yield of food crops. (Source: RRDA / WPR)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Pflanzenbefall
-
36 Waldschadensinventur
- инвентаризация ущерба, нанесенного лесам
инвентаризация ущерба, нанесенного лесам
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
inventory of forest damage
Survey of a forest area to determine forest depletion. The aim of the inventory is to give an overview of the forest conditions. Especially should the inventory aim to detect any changes in the forest conditions, but it should also provide the distribution of the forest damages and find out any relation with site and stand conditions. (Source: DUNSTEa)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Waldschadensinventur
-
37 Ökosystemforschung
исследования экосистем
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
ecosystem research
Study of the ways in which plants, animals, and microbes interact with each other and with their physical environment and of the processes involving the circulation, transformation and accumulation of both matter, especially nutrient materials, and energy. (Source: CULTER / PARCORa)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Ökosystemforschung
-
38 Spannungslosigkeit
исчезновение напряжения
Снижение напряжения в любой точке системы электроснабжения до нуля.
[ ГОСТ 23875-88]
исчезновение напряжения
Состояние нулевого напряжения в сети, продолжающееся более двух периодов сетевого напряжения. Качественные импульсные блоки питания могут выдержать 20-40 мс (один - два периода) отсутствия сетевого напряженияEN
loss of voltage
a condition in which the voltage is zero or near zero, at the supply point or points
[IEV number 604-01-23]
blackout
cutoff of electrical power, especially as a result of a shortage, a mechanical failure, or overuse by consumers
NOTE A power cut due to a short or long-term electric power loss in an area.
[IEC 61000-2-5, ed. 2.0 (2011-05)]FR
manque de tension
situation dans laquelle la valeur de la tension en un point de fourniture est nulle ou quasi nulle
[IEV number 604-01-23]
coupure
arrêt de l’alimentation électrique, due en particulier à une pénurie, une défaillance mécanique ou une surconsommation de la part des utilisateurs
NOTE Coupure de courant entraînant la suppression de l’alimentation électrique dans une zone pour une courte durée ou une longue durée.
[IEC 61000-2-5, ed. 2.0 (2011-05)]451.1 В случаях, если понижение или исчезновение напряжения с последующим его восстановлением может создать опасность для людей или имущества, должны быть приняты необходимые меры предосторожности.
[ ГОСТ Р 50571. 6-94 ( МЭК 364-4-45-84)]465.3.1 Цепи управления электродвигателями должны быть спроектированы таким образом, чтобы не было возможности самозапуска двигателя после его остановки вследствие понижения или исчезновения напряжения, если самозапуск является опасным.
[ ГОСТ Р 50571. 7-94 ( МЭК 364-4-46-81)]Недопустимые, нерекомендуемые
Тематики
EN
- blackout
- loss of the supply voltage
- loss of voltage
- power breakdown
- power shortage
- supply interruption
DE
FR
Смотри также
D. Spannungslosigkeit
E. Loss of voltage
F. Manque de tension
Снижение напряжения в любой точке системы электроснабжения до нуля
Источник: ГОСТ 23875-88: Качество электрической энергии. Термины и определения оригинал документа
Немецко-русский словарь нормативно-технической терминологии > Spannungslosigkeit
39 Ausgleichwicklung
компенсационная обмотка
Дополнительная обмотка, соединенная по схеме «треугольник», предназначенная для снижения полного сопротивления нулевой последовательности (см. 3.7.3) в трансформаторах с обмотками, соединенными по схеме «звезда-звезда» или «звезда-зигзаг»
(МЭС 421-03-09).
Примечание — Обмотка считается компенсационной только в том случае, если она не предназначена для трехфазного присоединения к внешней сети.
[ ГОСТ 30830-2002]
компенсационная обмотка
КО
Вспомогательная обмотка, располагаемая на стержнях или ярмах с целью компенсации частей магнитного поля трансформатора.
Примечание. Возможна, например, компенсация магнитодвижущей силы регулировочной обмотки, магнитного поля нулевой последовательности, поля третьей гармонической и др.
[ ГОСТ 16110-82]EN
stabilizing winding
a supplementary delta-connected winding, especially provided on star-star or star-zigzag connected transformers to decrease the zero-sequence impedance of the star-connected winding
[IEV number 421-03-09]FR
enroulement de stabilisation
enroulement supplémentaire en triangle, spécialement utilisé sur des transformateurs à couplage étoile-étoile ou étoile-zigzag dans le but de réduire l'impédance homopolaire de l'enroulement connecté en étoile
[IEV number 421-03-09]Тематики
Классификация
>>>Синонимы
- КО
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Ausgleichwicklung
40 Schiff
корабль
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
ship
A vessel propelled by engines or sails for navigating on the water, especially a large vessel that can not be carried aboard another, as distinguished from a boat. (Source: CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Schiff
СтраницыСм. также в других словарях:
especially — ► ADVERB 1) in particular. 2) to a great extent; very much. USAGE The words especially and specially are not interchangeable, although both can mean ‘particularly’. Only especially means ‘in particular’, as in he despised them all, especially… … English terms dictionary
Especially — Es*pe cial*ly, adv. In an especial manner; chiefly; particularly; peculiarly; in an uncommon degree. [1913 Webster] … The Collaborative International Dictionary of English
especially — index a fortiori, particularly Burton s Legal Thesaurus. William C. Burton. 2006 … Law dictionary
especially — c.1400, from ESPECIAL (Cf. especial) + LY (Cf. ly) (2) … Etymology dictionary
especially — [adv] exceptionally, particularly abnormally, above all, before all else, chiefly, conspicuously, curiously, eminently, exclusively, expressly, extraordinarily, in particular, in specie, mainly, markedly, notably, oddly, outstandingly, peculiarly … New thesaurus
especially — [e spesh′əl ē, i spesh′əl ē] adv. particularly; mainly; to a marked degree; unusually … English World dictionary
especially — es|pe|cial|ly W1S1 [ıˈspeʃəli] adv 1.) [sentence adverb] used to emphasize that something is more important or happens more with one particular thing than with others = ↑particularly ▪ I never liked long walks, especially in winter. ▪ Art books… … Dictionary of contemporary English
especially — es|pe|cial|ly [ ı speʃli ] adverb *** 1. ) used when mentioning conditions that make something more relevant, important, or true: PARTICULARLY: It was a very cold house, especially in the winter. especially because/since: He did not want to upset … Usage of the words and phrases in modern English
especially — /I speSFli/ also specially spoken adverb 1 (sentence adverb) used to emphasize that something is more important or happens more with one particular thing than with others: Crime is growing at a rapid rate, especially in urban areas. 2 (+ adj/adv) … Longman dictionary of contemporary English
especially */*/*/ — UK [ɪˈspeʃ(ə)lɪ] / US adverb 1) used when mentioning conditions that make something more relevant, important, or true It was a very cold house, especially in winter. especially as/because/since: He did not want to upset his father, especially as… … English dictionary
especially — especial, especially, special, specially 1. There is no longer any great difficulty with especial because special has all but driven it out, although it is still used occasionally to refer principally to exceptional personal qualities or… … Modern English usage
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