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1 САРС, ТОРС, тяжёлый острый респираторный синдром, атипичная пневмония
nmed. SARS (engl. Severe Acute Respiratory Syndrom, dt. Schweres Akutes Atemwegssyndrom)Универсальный русско-немецкий словарь > САРС, ТОРС, тяжёлый острый респираторный синдром, атипичная пневмония
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2 голод
голод
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
famine
A severe shortage of food, as through crop failure or over population. It may be due to poor harvests following drought, floods, earthquake, war, social conflict, etc. (Source: CED / GUNN)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-немецкий словарь нормативно-технической терминологии > голод
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3 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
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4 опреснительная установка
опреснительная установка
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
desalination plant
1) Plants for the extraction of fresh water from saltwater by the removal of salts, usually by distilling.
2) Parts of the world with severe water shortages are looking to desalination plants to solve their problems. Desalination of water is still nearly four times more expensive than obtaining water from conventional sources. However technology is improving and costs are likely to decrease slightly in the future. There is now more interest in building distillation plants beside electric installations so that the waste heat from power generation can be used to drive the desalination process.
(Source: ALL / WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-немецкий словарь нормативно-технической терминологии > опреснительная установка
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5 полихлорированный дибензофуран
полихлорированный дибензофуран
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
polychlorinated dibenzofuran
A family containing 135 individual, colorless compounds known as congeners with varying harmful health and environmental effects. They are produced as unwanted compounds during the manufacture of several chemicals and consumer products such as wood treatment chemicals, some metals, and paper products; also produced from the burning of municipal and industrial waste in incinerators, from exhaust of leaded gasoline, heat, or production of electricity. They are hazardous to the respiratory system, gastrointestinal system, liver, musculoskeletal system, skin and nervous system; and are toxic by inhalation, ingestion, and contact. Symptoms of exposure include frequent coughing, severe respiratory infections, chronic bronchitis, abdominal pain, muscle pain, acne rashes, skin color changes, unexpected weight loss, nonmalignant or malignant liver disease. (Source: KOREN)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-немецкий словарь нормативно-технической терминологии > полихлорированный дибензофуран
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6 рубка леса
рубка леса
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
woodland clearance
The permanent clear-felling of an area of forest or woodland. On steep slopes this can lead to severe soil erosion, especially where heavy seasonal rains or the melting of snow at higher levels cause sudden heavy flows of water. In the humid tropics it may also lead to a release of carbon dioxide from the soil. (Source: ALL2)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-немецкий словарь нормативно-технической терминологии > рубка леса
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7 ущерб, нанесенный водной стихией
ущерб, нанесенный водной стихией
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
water damage
Water damage can be caused by flooding, severe storms, tidal waves, seismic seawaves, storm surges, etc. (Source: WPR)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-немецкий словарь нормативно-технической терминологии > ущерб, нанесенный водной стихией
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8 ущерб, нанесенный грозой, штормом
ущерб, нанесенный грозой, штормом
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
storm damage
Storms may cause flooding and damage to crops; uproot trees; damage roofs and chimneys; break windows, leading to rain damage; overturn trucks; affect transportation, communication and energy supplies; delay building construction and destroy traditional landmarks. In their more violent form, storms may cause severe damage and loss of life. (Source: WPR)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-немецкий словарь нормативно-технической терминологии > ущерб, нанесенный грозой, штормом
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9 электрическая дуга
- Lichtbogen, m
- elektrischer Lichtbogen, m
электрическая дуга
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[Интент]EN
(electric) arc
self-maintained gas conduction for which most of the charge carriers are electrons supplied by primary‑electron emission
[IEV ref 121-13-12]FR
arc (électrique), m
conduction gazeuse autonome dans laquelle la plupart des porteurs de charge sont des électrons produits par émission électronique primaire
[IEV ref 121-13-12]-
Материалы, стойкие к воздействию электрической дуги, используемые в качестве защитных средств, должны быть несгораемыми, иметь низкую теплопроводность и достаточную толщину для обеспечения механической стойкости.
[ ГОСТ Р 50571. 4-94 ( МЭК 364-4-42-80)] -
Средства индивидуальной защиты от теплового воздействия электрической дуги...
[Технический регламент о безопасности средств индивидуальной защиты] -
Опасное и вредное воздействия на людей электрического тока, электрической дуги и электромагнитных полей проявляются в виде электротравм и профессиональных заболеваний.
[ ГОСТ 12.1.019-79] -
сопротивление электрической дуги в месте КЗ
[ ГОСТ 28249-93 ] -
... способствовать гашению электрической дуги
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Аппараты управления, имеющие электрическую дугу на силовых контактах при
нормальной работе ( пускатели, станции управления), должны проходить испытания при коммутации нагрузки.
[ ГОСТ Р 51330.20-99]
An electric arc is an electrical breakdown of a gas which produces an ongoing plasma discharge, resulting from a current flowing through normally nonconductive media such as air. A synonym is arc discharge. An arc discharge is characterized by a lower voltage than a glow discharge, and relies on thermionic emission of electrons from the electrodes supporting the arc. The phenomenon was first described by Vasily V. Petrov, a Russian scientist who discovered it in 1802. An archaic term is voltaic arc as used in the phrase " voltaic arc lamp".
[http://en.wikipedia.org/wiki/Electric_arc]Параллельные тексты EN-RU
In the last years a lot of users have underlined the question of safety in electrical assemblies with reference to one of the most severe and destructive electrophysical phenomenon: the electric arc.
[ABB]В последние годы многие потребители обращают особое внимание на безопасность НКУ, связанную с чрезвычайно разрушительным и наиболее жестко действующим электрофизическим явлением - электрической дугой.
[Перевод Интент]Тематики
- электротехника, основные понятия
Действия
Сопутствующие термины
EN
DE
- elektrischer Lichtbogen, m
- Lichtbogen, m
FR
Русско-немецкий словарь нормативно-технической терминологии > электрическая дуга
См. также в других словарях:
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severe — severe, stern, austere, ascetic can all mean given to or characterized by strict discipline and firm restraint. Severe is applicable to persons and their looks, acts, thoughts, and utterances or to things (as laws, penalties, judgments, and… … New Dictionary of Synonyms
Severe — Se*vere , a. [Compar. {Severer}; superl. {Severest}.] [L. severus; perhaps akin to Gr. ??? awe, ??? revered, holy, solemn, Goth. swikns innocent, chaste: cf. F. s[ e]v[ e]re. Cf. {Asseverate}, {Persevere}.] 1. Serious in feeling or manner;… … The Collaborative International Dictionary of English
SÉVÈRE ALEXANDRE — MARCUS AURELIUS (208 235) empereur romain (222 235) Par sa mère, Julia Mamea, Sévère Alexandre appartient à la dynastie des Sévères. Il est choisi en 221 par son cousin germain Élagabal comme césar, ce qui lui donne droit à la succession… … Encyclopédie Universelle
Severe storms in Australia — refers to the storms including cyclones which have caused severe damage in Australia.The first storm recorded in Australia was a shipwreck in 1622.Australian Capital TerritoryOn 31 December 2006 a huge thunderstorm caused havoc in the southern… … Wikipedia
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