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1 Überweidung
чрезмерный выпас
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
overgrazing
Intensive grazing by animals, for example cattle, sheep or goats, on an area of pasture. It has become a serious threat to the world's rangelands and grasslands. Several factors have led to overgrazing, which leads to the soil being degraded and becoming liable to erosion by wind and rain, and even to desertification. The main pressures leading to widespread overgrazing have been the need to increase the size and numbers of herds to produce more food for an increasing human population, and the transformation of traditional pasture land into plantations to grow cash crops. Throughout the dry tropics, where traditionally herds ranged over vast areas, intensive livestock-rearing schemes have taken over, mostly to provide meat for the export market. Well-digging operations have also led to heavy concentrations of animals in small areas. (Source: WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Überweidung
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2 Trockenfarmverfahren
агротехнические приемы для засушливых районов
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
dry farming
A system of extensive agriculture allowing the production of crops without irrigation in areas of limited rainfall. Dry farming involves conserving soil moisture through mulching, frequent fallowing, maintenance of a fine tilth by cross-ploughing, repeated working of the soil after rainfall and removal of any weeds that would take up some of the moisture. (Source: GOOD)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Trockenfarmverfahren
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3 Zementherstellung
производство цемента
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
cement manufacture
Cement is produced by heating a mixture of clay or shale plus chalk or lime in a rotary kiln up to 250 m long per 8 m diameter rotating at 1 rpm. The process can be wet, semi-dry or dry and the fuel can be pulverized coal, oil or gas. As the coal ash is similar in composition to the clay or shale, it can stay in the cement clinker. As one of the kiln operator's major costs is fuel and even a modest sized kiln can consume 8-10 tons of coal per hour, the cement kiln could, therefore, solve a disposal problem and also benefit the cement manufacturer by reducing fuel costs. (Source: PORT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Zementherstellung
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4 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
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5 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
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6 Winderosion
ветряная эрозия
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
wind erosion
The breakdown of solid rock into smaller particles and its removal by wind. It may occur on any soil whose surface is dry, unprotected by vegetation (to bind it at root level and shelter the surface) and consists of light particles. The mechanisms include straightforward picking up of dust and soil particles by the airflow and the dislodging or abrasion of surface material by the impact of particles already airborne. (Source: ALL)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Winderosion
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7 saure Deposition
кислотные осадки
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
acid deposition
A type of pollution which washes out of the atmosphere as dilute sulphuric and nitric acids. It tends to be a regional rather than a global phenomenon, linked to particular industrial activities and meteorological conditions. It includes rain, more than normally acidic snow, mist, sleet, fog, gas and dry particles. It upsets the balance of nature, disrupting ecosystems, and destroys forests and woodlands, plants and crops; kills aquatic life by altering the chemical balance of lakes and rivers and corrodes building materials and fabrics. The pollutants are caused principally by discharges from power station chimneys of sulphur dioxide and nitrogen oxides released by burning fossil fuels, coal and oil. (Source: WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > saure Deposition
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8 Tornado
торнадо
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
tornado
A rapidly rotating column of air developed around a very intense low-pressure centre. It is associated with a dark funnel-shaped cloud and with extremely violent winds (>300km/h) blowing in a counterclockwise spiral, but accompanied by violent downdraughts. The precise mechanisms are not fully understood but the following atmospheric conditions appear to be necessary for tornado development: a layer of warm moist air at low altitude; a layer of dry air at higher altitude with an inversion of temperature at about 1.000 m; a triggering mechanism, usually in the form of an active, intense cold front or solar heating of the ground which will create a vortex. (Source: WHIT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Tornado
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9 Sanddüne
песчаная дюна
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
sand dune
An accumulation of loose sand heaped up by the wind, commonly found along low-lying seashores above high-tide level, more rarely on the border of large lakes or river valleys, as well as in various desert regions, where there is abundant dry surface sand during some part of the year. (Source: BJGEO)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Sanddüne
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10 biologische Produktion
биологическое производство
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
biological production
1) The amount and rate of production which occur in a given ecosystem over a given time period. It may apply to a single organism, a population, or entire communities and ecosystems.
2) The quantity of organic matter or its equivalent in dry matter, carbon, or energy content which is accumulated during a given period of time.
(Source: PARCOR / MGH)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > biologische Produktion
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11 Dürre
засуха
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
drought
A period of abnormally dry weather sufficiently prolonged so that the lack of water causes a serious hydrologic imbalance (such as crop damage, water supply shortage) in the affected area. (Source: MGH)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Dürre
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12 Blumenzwiebelkultur
культивация луковиц
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
bulb cultivation
The cultivation of flower bulb is divided into two sectors: for forcing (flower bulbs used by professional growers for the production of cut flowers and potted plants) and for dry sales (flower bulbs for garden planting, flower pots, landscaping and parks). (Source: BULB)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Blumenzwiebelkultur
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13 Dürreschutz
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
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Dürreschutz
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14 Gleichrichter
выпрямитель
-
[IEV number 151-13-45]
выпрямитель
Преобразователь электрической энергии, который преобразует систему переменных токов в ток одного направления
[ОСТ 45.55-99]
выпрямитель
Устройство, преобразующее переменный ток в постоянный с использованием характеристики, допускающей протекание тока значительной силы лишь в одном направлении.
[РД 01.120.00-КТН-228-06]EN
rectifier
electric energy converter that changes single-phase or polyphase alternating electric currents to unidirectional current
[IEV number 151-13-45]FR
redresseur, m
convertisseur d'énergie électrique qui transforme un courant électrique alternatif ou un système polyphasé de courants alternatifs en un courant unidirectionnel
[IEV number 151-13-45]Тематики
EN
DE
FR
полупроводниковый выпрямитель
выпрямитель
Полупроводниковый преобразователь электроэнергии, предназначенный для преобразования переменного тока в постоянный.
[ ГОСТ 23414-84]EN
rectifier
electric energy converter that changes single-phase or polyphase alternating electric currents to unidirectional current
[IEV number 151-13-45]
rectifier
an a.c./d.c. converter for rectification
[IEV number 551-12-07]
rectifier
a static convertor for the conversion of alternating current to direct or undulating current
[IEV number 811-19-12 ]FR
redresseur, m
convertisseur d'énergie électrique qui transforme un courant électrique alternatif ou un système polyphasé de courants alternatifs en un courant unidirectionnel
[IEV number 151-13-45]
redresseur
convertisseur alternatif/continu assurant le redressement
[IEV number 551-12-07]
redresseur
convertisseur statique de courant alternatif en courant continu ou ondulé
[IEV number 811-19-12 ]Тематики
Синонимы
EN
DE
FR
- redresseur, m
Немецко-русский словарь нормативно-технической терминологии > Gleichrichter
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15 Restwassermenge
остаточное количество воды
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
residual amount of water
Amount of water left in a water course after it has fed a hydropower plant in order to maintain a satisfactory dry-weather-flow for allowing the survival of biotic communities. (Source: RRDA)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Restwassermenge
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16 sauberer Zustand
чистые условия
-
[IEV number 442-01-30]EN
clean situation
situation where no pollution or only dry, non-conductive pollution occurs and which has no influence on the insulation characteristics
[IEV number 442-01-30]FR
situation propre
absence de pollution ou présence seulement d'une pollution sèche non conductrice qui n'a pas d'influence sur les caractéristiques de l'isolation
[IEV number 442-01-30]EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > sauberer Zustand
См. также в других словарях:
The Dry Salvages (novella) — The Dry Salvages is a futuristic science fiction story of novella length by Caitlín R. Kiernan, published in 2004 as a stand alone hardback volume by Subterranean Press. The story consists of two parallel narratives, one set in the novella s… … Wikipedia
the dry — (sometimes with cap; Aust informal) The dry season in central and N Australia • • • Main Entry: ↑dry … Useful english dictionary
(the) Dry — the Dry UK [draɪ] US noun informal the dry season in northern Australia that lasts from April to November Thesaurus: seasons and times of the yearhyponym … Useful english dictionary
(the) dry season — the dry season UK US noun a period of the year in some countries during which rain does not usually fall Thesaurus: lack of rainhyponym words used to describe wet weathersynonym … Useful english dictionary
the dry — chiefly Austral. the dry season. → dry … English new terms dictionary
the dry pox — obsolete syphilis More usual as the pox, tout court: The disease communicated by the Malays, Lascars, and the Orientals generally...goes by the name of the Dry . (Mayhew, 1862 he isn t always so squeamish) … How not to say what you mean: A dictionary of euphemisms
the Dry — UK [draɪ] / US noun informal the dry season in northern Australia that lasts from April to November … English dictionary
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the dry — Australian English Dry season in the north … English dialects glossary
the dry — Australian Slang the 7 8 months of the year in Northern Australia when it doesn t rail … English dialects glossary