-
121 dégradation
n fdétérioration zarar verme -
122 sabotage
-
123 dégénération de la variété
вырождение сорта
Снижение сортовых качеств в процессе возделывания сорта, вызываемое накоплением отрицательных мутаций, биологическим засорением, снижением устойчивости растений сорта к болезням, вредителям и неблагоприятным факторам среды.
[ ГОСТ 20081-74]Тематики
Обобщающие термины
EN
DE
FR
Франко-русский словарь нормативно-технической терминологии > dégénération de la variété
-
124 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
Франко-русский словарь нормативно-технической терминологии > courant admissible, m
-
125 courant permanent 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
Франко-русский словарь нормативно-технической терминологии > courant permanent admissible, m
-
126 trace de frappe
поверхностное повреждение
Ндп. забоина
Дефект в виде искажения поверхности, возникшего при выбивке отливки из формы, очистке и транспортировании.
[ ГОСТ 19200-80]Недопустимые, нерекомендуемые
Тематики
Обобщающие термины
EN
DE
FR
Франко-русский словарь нормативно-технической терминологии > trace de frappe
-
127 environnement côtier
прибрежная среда
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
coastal environment
The areas where the land masses meet the seas. Coastal environments include tidal wetlands, estuaries, bays, shallow near-shore waters, mangrove swamps, and in-shore reef systems. The critical habitats of these zones are: feeding, breeding, nursery, and resting areas. Coastal areas throughout the world are under enormous environmental stress, which is caused by a wide range of factors, including pollution and the destruction and deterioration of marine habitats. (Source: GILP96 / WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Франко-русский словарь нормативно-технической терминологии > environnement côtier
-
128 eaux côtičres
прибрежные воды
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
coastal water
Coastal waters are typically characterized by a shallow continental shelf, gently sloping seaward to a continental slope, which drops relatively abruptly to the deep ocean. The proximity of coastal water to land also influences the water circulation. In the vicinity of freshwater inflows, the nearshore circulation is altered by the presence of density-driven motions. Coastal waters are under enormous environmental stress, caused by a wide range of factors including pollution and the destruction and deterioration of marine habitats. (Source: WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Франко-русский словарь нормативно-технической терминологии > eaux côtičres
См. также в других словарях:
détérioration — [ deterjɔrasjɔ̃ ] n. f. • XVe, bas lat. deterioratio, de deterior « pire » 1 ♦ Action de détériorer, de se détériorer; son résultat. ⇒ dégât, 1. dégradation, dommage, ruine. Détérioration d un appareil, d une machine. Détérioration de… … Encyclopédie Universelle
Deterioration — Détérioration Voir « détérioration » sur le Wiktionnaire … Wikipédia en Français
deterioration — deterioration, degeneration, devolution, decadence, decline, declension are comparable as meaning either the process of falling from a higher to a lower level or the state of a thing when such a falling has occurred. Deterioration is the least… … New Dictionary of Synonyms
Deterioration — is a term now commonly used in health care, to describe worsening of a patient s condition. It is often used as a shortened form of deterioration not recognised or not acted upon . Much work to reduce harm from deterioration has been undertaken… … Wikipedia
deterioration — I noun abasement, abrasion, atrophy, caducity, consumption, corrosion, corruption, debasement, decadence, decay, declension, declination, decomposition, decrepitude, degradation, demission, depreciation, destruction, deteriorcondicio,… … Law dictionary
deterioration — 1650s, possibly a native formation, or else from Fr. détérioration (15c.), noun of action from détériorer, from L.L. deteriorare (see DETERIORATE (Cf. deteriorate)) … Etymology dictionary
Deterioration — De*te ri*o*ra tion, n. [LL. deterioratio: cf. F. d[ e]t[ e]rioration.] The process of growing worse, or the state of having grown worse. [1913 Webster] … The Collaborative International Dictionary of English
Deterĭoration — (lat.), soviel wie Verschlechterung einer Sache (s. Landwirtschaftliche Betriebserfordernisse); deteriorieren, verschlechtern, verderben … Meyers Großes Konversations-Lexikon
Deterioration — (lat.), Verschlimmerung; Verschlechterung einer Sache, insofern sie dadurch an Wert verliert; deteriorieren, verschlechtern … Kleines Konversations-Lexikon
Deterioration — Deterioration, lat., Deteriorirung, Verschlechterung einer Sache; deterioriren, verschlechtern; deterioris conditionis, von schlechterer Beschaffenheit … Herders Conversations-Lexikon
détérioration — DÉTÉRIORATION. sub. f. L action par laquelle on détériore quelque chose, et l état de la chose détériorée. Tout Locataire est responsable des détériorations faites durant son bail. Il y a de grandes détériorations dans cette terre, tout y est… … Dictionnaire de l'Académie Française 1798