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1 aktive Filterfläche
f < verf> ■ specific filter surface area; specific surface area -
2 spezifische Oberfläche
f < verf> ■ specific filter surface area; specific surface areaGerman-english technical dictionary > spezifische Oberfläche
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3 spezifische Oberfläche
Deutsch-Englisch Fachwörterbuch Architektur und Bauwesen > spezifische Oberfläche
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4 spezifische Oberflächenbelastung
Deutsch-Englisch Wörterbuch der Elektrotechnik und Elektronik > spezifische Oberflächenbelastung
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5 zulässige spezifische Oberflächenbelastung
Oberflächenbelastung f: zulässige spezifische Oberflächenbelastung f permissible intensity of (specific) surface loadingDeutsch-Englisch Wörterbuch der Elektrotechnik und Elektronik > zulässige spezifische Oberflächenbelastung
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6 spezifische Warmeaustauschoberflache der Deslillationsentsalzunganlage
удельная поверхность теплообмена дистилляционной опреснительной установки
удельная поверхность теплообмена
Отношение суммарной площади поверхности теплообмена дистилляционной опреснительной установки к часовой производительности этой установки.
[ ГОСТ 23078-78]Тематики
Синонимы
EN
DE
FR
- surface d’echange de chaleur specifique pour installation de dessalement par distillation
7. Удельная поверхность теплообмена дистилляционной опреснительной установки
Удельная поверхность теплообмена
D. Spezifische Warmeaustauschoberflache der Deslillationsentsalzunganlage
E. Specific heat exchage surface for distillation desalination plant
F. Surface d’echange de chaleur specifique pour installation de dessalement par distillation
Отношение суммарной площади поверхности теплообмена дистилляционной опреснительной установки к часовой производительности этой установки
Источник: ГОСТ 23078-78: Установки и аппараты опреснительные дистилляционные. Термины и определения оригинал документа
Немецко-русский словарь нормативно-технической терминологии > spezifische Warmeaustauschoberflache der Deslillationsentsalzunganlage
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7 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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8 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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9 Wettervorhersage
метеорологический прогноз
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
meteorological forecasting
A branch of science that studies the dynamics of the atmosphere and the direct effects of the atmosphere upon the Earth's surface, oceans and inhabitants, focusing particularly on weather and weather conditions. (Source: INP / NOA / EEN)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
прогнозирование погоды
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
weather forecasting
The act or process of predicting and highlighting meteorological conditions that are expected for a specific time period and for a specific area or portion of air space, by using objective models based on certain atmospheric parameters, along with the skill and experience of a meteorologist. (Source: FEM / AUS)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Wettervorhersage
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10 Flächenpressung
Deutsch-Englisch Fachwörterbuch Architektur und Bauwesen > Flächenpressung
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11 Zufahrtsstraße
дорога подъездная
Местная дорога для движения транспортных средств от какого-либо объекта к дороге общего пользования
[Терминологический словарь по строительству на 12 языках (ВНИИИС Госстроя СССР)]Тематики
- дороги, мосты, тоннели, аэродромы
EN
DE
FR
подъездные дороги
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
access road
Any street or narrow stretch of paved surface that leads to a specific destination, such as a main highway. (Source: RHW)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Zufahrtsstraße
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12 spezifische Oberfläche
поверхность удельная
Отношение общей площади поверхности всех частиц материала к его объёму или массе
[Терминологический словарь по строительству на 12 языках (ВНИИИС Госстроя СССР)]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > spezifische Oberfläche
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13 Hügel
холм
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
hill
A natural elevation of the land surface, rising rather prominently above the surrounding land, usually of limited extent and having a well-defined outline, rounded rather than peaked or rugged, with no specific definition of absolute elevation. (Source: BJGEO)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Немецко-русский словарь нормативно-технической терминологии > Hügel
См. также в других словарях:
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