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121 phụ cận
/surrounding/ Rand..., umgebend /adjacent/ angrenzend, anliegend, benachbart, danebenliegendTừ điển Việt-Đức. Vietnamesisch-Deutsch Wörterbuch. > phụ cận
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122 tiếp cận
/approach/ Zugang, Zutritt /to reach/ erreichen, greifen /adjacent/ angrenzend, anliegend, benachbart, danebenliegendTừ điển Việt-Đức. Vietnamesisch-Deutsch Wörterbuch. > tiếp cận
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123 Азия
Азия
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
Asia
The world's largest continent. It occupies the eastern part of the Eurasian landmass and its adjacent islands and is separated from Europe by the Ural Mountains. Asia borders on the Arctic Ocean, the Pacific Ocean, the Indian Ocean, and the Mediterranean and Red Seas in the west. It includes the largest peninsulas of Asia Minor, India, Arabia, and Indochina and the island groups of Japan, Indonesia, the Philippines, and Ceylon; contains the mountain ranges of the Hindu Kush, Himalayas, Pamirs, Tian Shan, Urals, and Caucasus, the great plateaus of India, Iran and Tibet, vast plains and deserts, and the valleys of many large rivers including the Mekong, Irrawaddy, Indus, Ganges, Tigris and Euphrates. (Source: AMHER / CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-немецкий словарь нормативно-технической терминологии > Азия
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124 аллювиальная равнина
аллювиальная равнина
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
alluvial plain
A level or gently sloping tract or a slightly undulating land surface produced by extensive deposition of alluvium, usually adjacent to a river that periodically overflows its banks; it may be situated on a flood plain, a delta, or an alluvial fan. (Source: BJGEO)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-немецкий словарь нормативно-технической терминологии > аллювиальная равнина
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125 балка подстропильная
балка подстропильная
Балка, опирающаяся на колонны продольного ряда и служащая опорой для стропильных балок или ферм
[Терминологический словарь по строительству на 12 языках (ВНИИИС Госстроя СССР)]Тематики
EN
DE
FR
- poutre supportant les fermes (entre deux poteaux adjacents en direction longitudinale)
Русско-немецкий словарь нормативно-технической терминологии > балка подстропильная
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126 береговая растительность
береговая растительность
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
riverside vegetation
Plants growing in areas adjacent to rivers and streams. (Source: EPAGLO)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-немецкий словарь нормативно-технической терминологии > береговая растительность
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127 воздушный зазор между полюсами
- Schlagweite/Luftstrecke zwischen den Polen
воздушный зазор между полюсами
Воздушный зазор между любыми токопроводящими частями соседних полюсов.
МЭК 60050(441-17-32).
[ ГОСТ Р 50030. 1-2000 ( МЭК 60947-1-99)]EN
clearance between poles
the clearance between any conductive parts of adjacent poles
[IEV number 441-17-32]FR
distance d'isolement entre pôles
distance d'isolement entre n'importe quelles parties conductrices de pôles adjacents
[IEV number 441-17-32]Тематики
- аппарат, изделие, устройство...
- выключатель автоматический
- выключатель, переключатель
- высоковольтный аппарат, оборудование...
Синонимы
EN
DE
- Schlagweite/Luftstrecke zwischen den Polen
FR
Русско-немецкий словарь нормативно-технической терминологии > воздушный зазор между полюсами
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128 длительный допустимый ток
- Strombelastbarkeit, f
- 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
Русско-немецкий словарь нормативно-технической терминологии > длительный допустимый ток
См. также в других словарях:
adjacent — adjacent, ente [ adʒasɑ̃, ɑ̃t ] adj. • 1314; lat. adjacens, de adjacere « être situé auprès » 1 ♦ Contigu, voisin. ⇒ attenant, proche. Terrain adjacent à un bois. « Qui sortant des maisons, qui des petites rues adjacentes » (Hugo). 2 ♦ (1751)… … Encyclopédie Universelle
Adjacent — Ad*ja cent, a. [L. adjacens, centis, p. pr. of adjacere to lie near; ad + jac[=e]re to lie: cf. F. adjacent.] Lying near, close, or contiguous; neighboring; bordering on; as, a field adjacent to the highway. The adjacent forest. B. Jonson. [1913… … The Collaborative International Dictionary of English
Adjacent — Ad*ja cent, a. [L. adjacens, centis, p. pr. of adjacere to lie near; ad + jac[=e]re to lie: cf. F. adjacent.] Lying near, close, or contiguous; neighboring; bordering on; as, a field adjacent to the highway. The adjacent forest. B. Jonson. [1913… … The Collaborative International Dictionary of English
adjacent — I adjective abutting, adjoining, alongside, beside, bordering, conterminous, contiguous, contiguus, continuous, convergent, finitimus, juxtaposed, meeting, neighboring, next to, proximal, touching, verging on, vicinal, vicinus associated concepts … Law dictionary
Adjacent — is an adjective meaning contiguous , adjoining or abutting .In geometry, adjacent is when sides meet to make an angle.In trigonometry the adjacent side of a right angled triangle is the cathetus next to the angle in question.In graph theory… … Wikipedia
adjacent — adjacent, adjoining, contiguous, abutting, tangent, conterminous, juxtaposed mean being in close proximity. Adjacent does not always imply actual contact but it does indicate that nothing of the same kind comes between; adjacent lots are in… … New Dictionary of Synonyms
adjacent — adjacent, adjoining An adjacent property is normally one that is nearby without necessarily touching the one being considered in relation to it. Similarly, adjacent angles in a triangle are separated by the length of one side of the triangle, an… … Modern English usage
adjacent — [ə jā′sənt] adj. [L adjacens, prp. of adjacere, to lie near < ad , to + jacere, to lie, throw: see JET1] near or close (to something); adjoining adjacently adv. SYN. ADJACENT things may or may not be in actual contact with each other, but they … English World dictionary
adjacent — ADJACENT, ENTE. adj. Qui est situé auprès, qui est aux environs. Pays adjacent. Lieux adjacens. Terres adjacentes. Iles adjacentes. Tout le Pays adjacent. Il ne se dit guère que De ce qui est étendu en surface … Dictionnaire de l'Académie Française 1798
Adjacent — Ad*ja cent, n. That which is adjacent. [R.] Locke. [1913 Webster] … The Collaborative International Dictionary of English
adjacent — adjacent, ente (a dja san, san t ) adj. 1° Situé auprès. Lieux adjacents. Acquérir des terres adjacentes aux siennes. L Algérie est adjacente à ce qu on appelle le Désert. • L élévation du sol de l Égypte s opère en même temps que cette… … Dictionnaire de la Langue Française d'Émile Littré