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1 измеритель сопротивления изоляции
измеритель сопротивления изоляции
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[IEV number 313-01-11]EN
insulation resistance meter
instrument intended to measure insulation resistance
[IEV number 313-01-11]FR
appareil de mesure de résistance d'isolement
appareil destiné à mesurer une résistance d'isolement
[IEV number 313-01-11]Тематики
- измерение электр. величин в целом
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DE
FR
Русско-немецкий словарь нормативно-технической терминологии > измеритель сопротивления изоляции
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2 электрическое сопротивление изоляции конденсатора
электрическое сопротивление изоляции конденсатора
Электрическое сопротивление конденсатора постоянному току.
[ ГОСТ 21415-75]Тематики
EN
DE
FR
61. Электрическое сопротивление изоляции конденсатора
D. Isolationswinderstand
E. Insulation resistance
F. Résistance d'isolement
Электрическое сопротивление конденсатора постоянному току
Источник: ГОСТ 21415-75: Конденсаторы. Термины и определения оригинал документа
Русско-немецкий словарь нормативно-технической терминологии > электрическое сопротивление изоляции конденсатора
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3 изоляция
электрическая изоляция
изоляция
Часть электротехнического устройства, электрически разделяющая его узлы и (или) детали.
[ ГОСТ 21515-76]
изоляция
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[IEV number 151-15-41]
изоляция
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[IEV number 151-15-42]EN
insulation (1)
all the materials and parts used to insulate conductive elements of a device
[IEV number 151-15-41]
insulation (2)
set of properties which characterize the ability of an insulation to provide its function
NOTE – Examples of relevant properties are: resistance, breakdown voltage.
Source: 151-15-41
[IEV number 151-15-42]FR
isolation, f
ensemble des matériaux et parties utilisés pour isoler des éléments conducteurs d'un dispositif
[IEV number 151-15-41]
isolement, m
ensemble des propriétés qui caractérisent l’aptitude d’une isolation à assurer sa fonction
NOTE – Des exemples de propriétés pertinentes sont la résistance, la tension de claquage.
[IEV number 151-15-42]Примечание - Изоляция может быть твердой, жидкой или газообразной (например, воздух), или представлять собой любую комбинацию указанных состояний.
[ ГОСТ Р МЭК 61140-2000]п ерекрытие по поверхности изоляции
Испытание изоляции полным испытательным напряжением
Тематики
- электрическая изоляция
- электротехника, основные понятия
Синонимы
Сопутствующие термины
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FR
Русско-немецкий словарь нормативно-технической терминологии > изоляция
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4 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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5 переработка резины
переработка резины
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
rubber processing
The systematic series of actions in which a solid substance deriving from rubber trees and plants is toughened and treated chemically to give it the strength, elasticity, resistance and other qualities needed for the manufacture of products such as erasers, elastic bands, water hoses, electrical insulation and tires. (Source: RHW)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-немецкий словарь нормативно-технической терминологии > переработка резины
См. также в других словарях:
insulation resistance — izoliacijos varža statusas T sritis fizika atitikmenys: angl. insulance; insulation resistance vok. Isolationswiderstand, m rus. сопротивление изоляции, n pranc. résistance d’isolation, f; résistance d’isolement, f … Fizikos terminų žodynas
insulation resistance — izoliacijos atsparumas statusas T sritis fizika atitikmenys: angl. insulating strength; insulation resistance vok. Isolationsfestigkeit, f rus. прочность изоляции, f pranc. rigidité d’isolement, f … Fizikos terminų žodynas
insulation resistance meter — izoliacijos varžos matuoklis statusas T sritis Standartizacija ir metrologija apibrėžtis Įtaisas izoliacijos varžai matuoti. atitikmenys: angl. insulation resistance meter vok. Isolations Messgerät, n; Isolationswiderstandsmesser, m rus.… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
insulation resistance meter — izoliacijos varžos matuoklis statusas T sritis fizika atitikmenys: angl. insulation resistance meter vok. Isolations Meßgerät, n; Isolationswiderstandsmesser, m rus. измеритель сопротивления изоляции, m pranc. appareil de mesure de résistance… … Fizikos terminų žodynas
insulation resistance — noun : the alternating current resistance between two electrical conductors or two systems of conductors separated by an insulating material … Useful english dictionary
Surface insulation resistance — is a property of the material and electrode system. It represents the electrical resistance between two electrical conductors separated by some dielectric material. References * [1] IPC Publication IPC 9201, “Surface Insulation Resistance… … Wikipedia
résistance d’isolation — izoliacijos varža statusas T sritis fizika atitikmenys: angl. insulance; insulation resistance vok. Isolationswiderstand, m rus. сопротивление изоляции, n pranc. résistance d’isolation, f; résistance d’isolement, f … Fizikos terminų žodynas
résistance d’isolement — izoliacijos varža statusas T sritis fizika atitikmenys: angl. insulance; insulation resistance vok. Isolationswiderstand, m rus. сопротивление изоляции, n pranc. résistance d’isolation, f; résistance d’isolement, f … Fizikos terminų žodynas
resistance — Synonyms and related words: Charley, VC, Vietcong, acquired immunity, active immunity, alienation, antagonism, antibody, antigen, antipathy, arrest, arrestation, arrestment, artificial immunity, autism, autistic thinking, averseness, aversion,… … Moby Thesaurus
Resistance — The inherent characteristic of a material to inhibit the transfer of energy. In electrical conductors, electrical resistance results in the generation of heat. Electrical resistance is measured in Ohms. The heat transfer resistance properties… … Energy terms
Insulation — Materials that prevent or slow down the movement of heat. *** Any material or substance that provides a high resistance to the flow of heat from one surface to another. The different types include blanket or batt, foam, or loose fill, which … Energy terms