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1 ДДТ
ДДТ
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
DDT
A persistent organochlorine insecticide, also known as dichlorodiphenyltrichloroethane, that was introduced in the 1940s and used widely because of its persistence (meaning repeated applications were unnecessary), its low toxicity to mammals and its simplicity and cheapness of manufacture. It became dispersed all over the world and, with other organochlorines, had a disruptive effect on species high in food chains, especially on the breeding success of certain predatory birds. DDT is very stable, relatively insoluble in water, but highly soluble in fats. Health effects on humans are not clear, but it is less toxic than related compounds. It is poisonous to other vertebrates, especially fish, and is stored in the fatty tissue of animals as sublethal amounts of the less toxic DDE. Because of its effects on wildlife its use in most countries is now forbidden or strictly limited. (Source: MGH / ALL)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > ДДТ
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2 циркуляция водных слоев
циркуляция водных слоев
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
overturn (limnology)
The circulation, especially in the fall and spring, of the layers of water in a lake or sea, whereby surface water sinks and mixes with bottom water; it is caused by changes in density differences due to changes in temperature, and is especially common wherever lakes are icebound in winter. (Source: BJGEO)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > циркуляция водных слоев
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3 автобусная остановка
автобусная остановка
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
bus station
A place along a route or line at which a bus stops for fuel or 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
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Русско-французский словарь нормативно-технической терминологии > автобусная остановка
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4 автомобильная шина
автомобильная шина
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
car tyre
A rubber ring placed over the rim of a wheel of a road vehicle to provide traction and reduce road shocks, especially a hollow inflated ring consisting of a reinforced outer casing enclosing an inner tube. (Source: CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > автомобильная шина
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5 агролесоводство
агролесоводство
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
agroforestry
The interplanting of farm crops and trees, especially leguminous species. In semiarid regions and on denuded hillsides, agroforestry helps control erosion and restores soil fertility, as well as supplying valuable food and commodities at the same time. (Source: ALL)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > агролесоводство
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6 ароматический углеводород
ароматический углеводород
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
aromatic hydrocarbon
Hydrocarbons having an unsaturated ring containing alternating double and single bonds, especially containing a benzene ring. (Source: CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > ароматический углеводород
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7 аудиовизуальные средства
аудиовизуальные средства
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
audiovisual media
Any means of communication transmitted to both the sense of hearing and the sense of sight, especially technologies directed to large audiences. (Source: RHW)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > аудиовизуальные средства
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8 берег
берег
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
bank (land)
The sloping side of any hollow in the ground, especially when bordering a river. (Source: CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > берег
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9 борьба с засухой
борьба с засухой
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
drought control
Measures taken to prevent, mitigate or eliminate damage caused to the ecosystem, especially crops, by a sustained period of dry weather. (Source: ISEP)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > борьба с засухой
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10 внутригородской район
внутригородской район
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
inner city
1) Part of a city at or near the centre, especially a slum area where poor people live in bad housing.
2) City centres of many industrialized countries which exhibit environmental degradation. The numerous and highly competitive activities entailing land use overwhelm the limited space and create a situation of overcrowding, functional incompatibility and cultural degradation. Inner city areas have a high level of commercial specialization, a large number of offices and a sizeable daytime population. At the same time, city centres generally remain a sort of ghetto for a permanent, low-income population living in run-down housing and enjoying little in the way of public services and civic amenities. The concentration of service industries inevitably entails the replacement of traditional housing and shops by office blocks, the provision of basic utilities at the expense of civic amenities and the provision of major access roads which eat up urban space. Structures of historic origin are often unable to meet modern requirements and, notwithstanding their value, frequently face demolition.
(Source: PHC / WPR)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > внутригородской район
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11 водяная мельница
водяная мельница
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
water mill
A mill whose power is provided by a large wheel which is turned by moving water, especially a river. (Source: CAMB)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > водяная мельница
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12 вопросы пола
вопросы пола
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
gender issue
A point, matter or dispute concerning the capabilities, societal roles or other differences and divisions between women and men, especially the relative weight of biological and physical difference versus culture and socialization as a cause of those distinctions. (Source: ISEP / RHW)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > вопросы пола
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13 временное жилье на случай чрезвычайной ситуации
временное жилье на случай чрезвычайной ситуации
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
emergency lodging
Housing or dwelling space provided for victims of a sudden, urgent and usually unexpected occurrence, especially when harm has been done to human life, property or the environment. (Source: RHW)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > временное жилье на случай чрезвычайной ситуации
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14 выхлопы двигателей летательных аппаратов
выхлопы двигателей летательных аппаратов
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
aircraft engine emission
The formation and discharge of gaseous and particulate pollutants into the environment, especially the stratosphere, chiefly from airplanes, helicopters and other high-altitude aircrafts. (Source: MHE)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > выхлопы двигателей летательных аппаратов
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15 газовый завод
газовый завод
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
gaswork
Place where gas, especially coal gas, is made. (Source: PHC)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > газовый завод
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16 газовый трубопровод
газовый трубопровод
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
gas pipeline
A long pipe, especially underground, used to transport gas over long distances. (Source: CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > газовый трубопровод
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17 глушитель
глушитель
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
silencer
Any device designed to reduce noise, especially the device in the exhaust system of a motor vehicle. (Source: CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > глушитель
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18 грузовой автомобиль
грузовой автомобиль
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
lorry
A large motor vehicle designed to carry heavy loads, especially one with a flat platform. (Source: CED)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > грузовой автомобиль
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19 двусторонняя конвенция
двусторонняя конвенция
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
bilateral convention
An international agreement, especially one dealing with a specific matter, involving two or both sides, factions, or the like. (Source: RRDA)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
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Русско-французский словарь нормативно-технической терминологии > двусторонняя конвенция
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20 длительный допустимый ток
- courant permanent admissible, m
- courant admissible, m
(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-французский словарь нормативно-технической терминологии > длительный допустимый ток
См. 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
