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1 длительный допустимый ток
- courant permanent admissible, m
- 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
Русско-французский словарь нормативно-технической терминологии > длительный допустимый ток
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2 mousetrap
∎ to build a better mousetrap élaborer un meilleur produitThe common philosophy among many Southeast Asian executives is that if their products are good - if they build a better mousetrap - consumers will know how to get to them. But these executives need to change their focus from achieving short-term sales to building long-term relationships with the key stakeholders in their businesses.
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3 usage
usage ['ju:zɪdʒ](a) (custom, practice) coutume f, usage m;∎ sanctified or hallowed by usage consacré par l'usage(b) (of term, word) usage m;∎ accepted usage le bon usage;∎ the term is in common usage le terme est employé couramment;∎ that phrase has long since dropped out of usage cette expression n'est plus usitée depuis longtemps(c) (employment) usage m, emploi m; (treatment → of material, tool) manipulation f; (→ of person) traitement m;∎ designed for rough usage conçu pour résister aux chocs;∎ these books are not meant for rough usage ces livres ne sont pas faits pour être malmenés;∎ directions or instructions for usage mode m d'emploi -
4 current
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5 use
━━━━━━━━━━━━━━━━━1. noun━━━━━━━━━━━━━━━━━1. nouna. ( = act of using) utilisation f• care is necessary in the use of chemicals il faut prendre des précautions quand on utilise des produits chimiques► for + use• to go out of use tomber en désuétude► to make good use of sth [+ time, money] faire bon usage de qch ; [+ opportunity, facilities] tirer parti de qch• to put sth to good use [+ time, money] faire bon usage de qch ; [+ opportunity, facilities] mettre qch à profitb. ( = way of using) it has many uses cela a de nombreux usagesc. ( = usefulness) utilité f• oh, what's the use? (inf) à quoi bon ?• is this (of) any use to you? est-ce que cela peut vous être utile ?• it's no use, he won't listen (inf) ça ne sert à rien, il ne veut rien entendred. ( = ability to use, access) usage ma. ( = make use of) [+ object, tool] se servir de, utiliser ; [+ force] utiliser ; [+ opportunity] profiter de ; [+ method] employer ; [+ drugs] prendre• are you using this? vous servez-vous de ceci ?• use your eyes! sers-toi de tes yeux !b. ( = use up) utiliser (tout)• have you used all the paint? avez-vous utilisé toute la peinture ?• what did he use to do on Sundays? (inf) qu'est-ce qu'il faisait (d'habitude) le dimanche ?━━━━━━━━━━━━━━━━━✦ Lorsque use est un nom, le se final se prononce s: ju:s, lorsque c'est un verbe, il se prononce z: ju:z, sauf dans les expressions use to ou used to, où se et sed se prononcent s et st: ju:s, ju:st.━━━━━━━━━━━━━━━━━► use up [ju:zˈʌp]* * *1. [juːs]1) [U] ( act of using) (of substance, object, machine) emploi m, utilisation f (of de); (of word, expression, language) emploi m, usage m (of de)the use of force — le recours à la force, l'usage de la force
the use of something as/for something — l'emploi or l'utilisation de quelque chose comme/pour quelque chose
for the use of somebody —
for use by somebody — (customer, staff) à l'usage de quelqu'un
to put something to good use —
while the machine is in use — lorsque la machine est en service or en fonctionnement
a word in common ou general use — un mot d'usage courant
out of ou no longer in use — [machine] ( broken) hors service; ( because obsolete) plus utilisé; [word, expression] plus en usage
this machine came into use in the 1950s — cette machine a fait son apparition pendant les années cinquante
2) [C] ( way of using) (of resource, object, material) utilisation f; ( of term) emploi mto have no further use for something/somebody — ne plus avoir besoin de quelque chose/quelqu'un
3) ( right to use)to have the use of — avoir l'usage de [house, car, kitchen]; avoir la jouissance de [garden]
to lose/still have the use of one's legs — perdre/conserver l'usage de ses jambes
with use of — avec usage de [kitchen]
4) ( usefulness)to be of use — être utile (to à)
to be (of) no use — [object] ne servir à rien; [person] n'être bon à rien
to be (of) no use to somebody — [object] ne pas servir à quelqu'un; [person] n'être d'aucune utilité à quelqu'un
2. [juːz]oh, what's the use? — oh, et puis à quoi bon?
transitive verb1) ( employ) se servir de, utiliser [object, car, room, money, tool]; employer, utiliser [method]; employer [word, expression]; profiter de, saisir [opportunity]; faire jouer [influence]; avoir recours à [blackmail, force, power]; utiliser [knowledge, talent]to use something/somebody as something — se servir de quelque chose/quelqu'un comme quelque chose
to use something for something/to do — se servir de or utiliser quelque chose pour quelque chose/pour faire
to be used for something/to do — servir à quelque chose/à faire, être utilisé pour quelque chose/pour faire
use your head ou loaf! — (colloq) fais marcher un peu ta cervelle! (colloq)
I could use (colloq) a drink! — j'aurais bien besoin d'un verre!
3) ( exploit) péj se servir de [person]4) ( take habitually) prendre [drugs]3.used past participle adjective [car] d'occasion; [crockery] salePhrasal Verbs:- use up -
6 current
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7 use
A n1 ¢ ( act of using) (of substance, object, machine) emploi m, utilisation f (of de) ; (of word, expression, language) emploi m, usage m (of de) ; the use of force/diplomacy le recours à la force/la diplomatie, l'usage de la force/la diplomatie ; the use of sth as/for sth l'emploi or l'utilisation de qch comme/pour qch ; for use as/in pour être utilisé comme/dans ; for the use of sb, for use by sb (customer, staff) à l'usage de qn ; for my own use pour mon usage personnel ; to make use of sth utiliser qch ; to make good/better/the best use of sth tirer bon/meilleur/le meilleur parti de qch ; to get ou have good ou a lot of use out of sth se servir beaucoup de qch, faire grand usage de qch ; to put sth to good use tirer bon parti de qch ; the car/machine gets regular use la voiture/la machine est utilisée régulièrement ; the room/photocopier is in use at the moment la pièce/la photocopieuse est occupée en ce moment ; while the machine is in use lorsque la machine est en service or en fonctionnement ; for external use only Pharm usage externe ; a word in common ou general use un mot d'usage courant ; out of ou no longer in use [machine] ( broken) hors service ; ( because obsolete) plus utilisé ; [word, expression] plus en usage ; worn/stained with use râpé/taché par l'usage ; this machine came into use in the 1950s cette machine a fait son apparition pendant les années cinquante ; the bridge/new system comes into use next year le pont/le nouveau système entrera en service l'année prochaine ;2 ∁ ( way of using) (of resource, object, material) utilisation f ; ( of term) emploi m, the many uses of a hairpin les nombreux usages d'une épingle à cheveux ; she has her uses elle a son utilité ; to find a use for sth trouver une utilisation pour qch ; to have no further use for sth/sb ne plus avoir besoin de qch/qn ; I've no use for that sort of talk fig je ne veux pas entendre parler de ça ;3 ¢ ( right to use) to have the use of avoir l'usage de [house, car, kitchen] ; avoir la jouissance de [garden] ; to let sb have the use of sth permettre à qn de se servir de qch ; to lose/still have the use of one's legs perdre/conserver l'usage de ses jambes ; with use of avec usage de [kitchen, bathroom] ;4 ¢ ( usefulness) to be of use être utile (to à) ; to be (of) no use [object] ne servir à rien ; [person] n'être bon/bonne à rien ; to be (of) no use to sb [object] ne pas servir à qn ; [person] n'être d'aucune utilité à qn ; he's no use ○ at cards il est nul ○ aux cartes ; what use is a wheel without a tyre? à quoi sert une roue sans pneu? ; what's the use of crying? à quoi bon pleurer? ; oh, what's the use? oh, et puis à quoi bon? ; is it any use asking him? est-ce que cela vaut la peine de lui demander? ; it's no use asking me inutile de me demander ; it's no use (he won't listen) c'est inutile (il n'écoutera pas) ; it's no use, we'll have to start rien à faire, il faut s'y mettre.B vtr1 ( employ) se servir de, utiliser [object, car, room, money, tool, telephone] ; employer, utiliser [method, technique] ; employer [word, expression] ; se servir de [language, metaphor] ; profiter de, saisir [opportunity] ; se servir de, faire jouer [influence] ; avoir recours à [blackmail, force, power] ; utiliser [knowledge, information, talent] ; to use sth/sb as sth se servir de qch/qn comme qch ; to use sth for sth/to do se servir de or utiliser qch pour qch/pour faire ; to be used for sth/to do servir à qch/à faire, être utilisé pour qch/pour faire ; we only use local suppliers nous achetons tous nos produits à des fournisseurs locaux ; somebody's using the toilet il y a quelqu'un dans les toilettes ; can I use you ou your name as a reference? est-ce que je peux donner votre nom comme référence? ; to use one's initiative faire preuve d'initiative ; use your initiative! allez, un peu d'initiative! ; use your head ou loaf ○ ! fais marcher un peu ta cervelle ○ ! ; I could use ○ a drink/bath! j'aurais bien besoin d'un verre/bain! ;2 ( also use up) ( consume) consommer [fuel, food] ; he's used all the water il a utilisé toute l'eau ; use the left-overs utilisez les restes ;4 ( take habitually) prendre [drugs] ;■ use up:▶ use [sth] up, use up [sth] finir, utiliser [remainder, food] ; d épenser [money, savings] ; épuiser [supplies, fuel, energy]. -
8 junior
junior ['dʒu:njə(r)]1 noun(a) (younger person) cadet(ette) m,f;∎ he is five years her junior il est de cinq ans son cadet, il a cinq ans de moins qu'elle(b) (subordinate) subordonné(e) m,f, subalterne mf∎ she teaches juniors elle est institutrice(d) American School élève mf de troisième année; American University étudiant(e) m,f de troisième année∎ to be junior to sb être plus jeune que qn(b) (lower in rank) subordonné, subalterne;∎ a junior member of staff un employé subalterne;∎ he's junior to her in the department il est son subalterne dans le service(c) (juvenile) jeune∎ bring Junior with you next time amène ton fiston la prochaine fois►► Junior Chamber of Commerce (in US) = chambre de commerce pour jeunes entrepreneurs;Junior College (in US) = établissement d'enseignement supérieur où l'on obtient un diplôme en deux ans;British University junior common room salle f des étudiants;junior doctor interne mf;junior executive cadre m débutant, jeune cadre m;American University the junior faculty les enseignants mpl non titulaires;American junior high school ≃ collège m d'enseignement secondaire;British junior hospital doctor ≃ interne mf;Junior League = association américaine de jeunes femmes de droite;junior minister sous-secrétaire m d'État;junior miss (clothes size) fillette f;junior partner associé(e) m,f adjoint(e);junior portion (in restaurant) portion f enfants;British junior school école f élémentaire (pour les enfants de 7 à 11 ans);Commerce junior sizes petites tailles fpl;American School & University junior year avant-dernière année f -
9 разъединитель (заземлитель) с разделенными опорами
разъединитель (заземлитель) с разделенными опорами
Разъединитель (заземлитель), в котором подвижные и неподвижные контакты каждого полюса не опираются на одно общее основание или раму.
Примечания
1 Характерным примером является пантографный или полупантографный разъединитель.
2 Этот термин распространяется только на разъединители высокого напряжения.
[ ГОСТ Р 52726-2007]EN
divided support disconnector, (earthing switch)
a disconnector [earthing switch] in which the fixed and moving contacts of each pole are not supported by a common base or frame
NOTE 1 A typical example is the pantograph or semi-pantograph disconnector.
NOTE 2 This term applies to high-voltage disconnectors only.
NOTE Examples are pantograph and semi-pantograph disconnectors.
[IEC 62271-102, ed. 1.0 (2001-12)]FR
sectionneur (sectionneur de terre) à éléments séparés
sectionneur [sectionneur de terre] dont les contacts fixes et mobiles de chaque pôle ne sont pas supportés par une embase ou un châssis commun
NOTE 1 Un exemple caractéristique est le sectionneur pantographe ou semi-pantographe.
NOTE 2 Ce terme ne concerne que les sectionneurs à haute tension.
NOTE Des exemples sont les sectionneurs pantographes ou semi-pantographes.
[IEC 62271-102, ed. 1.0 (2001-12)]Тематики
- высоковольтный аппарат, оборудование...
Классификация
>>>EN
- divided support disconnector, (earthing switch)
FR
Русско-французский словарь нормативно-технической терминологии > разъединитель (заземлитель) с разделенными опорами
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10 указ
указ
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
ordinance
A rule established by authority; a permanent rule of action; a law or statute. In its most common meaning, the term is used to designate the enactment of the legislative body. (Source: WESTS)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-французский словарь нормативно-технической терминологии > указ
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