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1 govern
govern [ˈgʌvən]a. [head of state] gouvernerb. [law, rule, principle] régir• international guidelines governing the export of arms les directives internationales régissant l'exportation des armes• there are strict rules governing how much lawyers can charge il existe des règles strictes fixant le montant des honoraires des avocats* * *['gʌvn] 1.transitive verb1) Administration, Politics gouverner [country, state, city]; administrer [colony, province]2) ( control) gen régir [use, conduct, treatment]3) ( determine) déterminer [decision, development]4) maîtriser [feelings, temper]5) Linguistics régir6) Electricity, Technology régler2.intransitive verb [parliament, president] gouverner; [administrator, governor] administrer -
2 govern
A vtr2 ( control) [law, principle] régir [conduct, manufacture, sale, treatment, use] ; dominer [relationship, person] ;3 ( determine) déterminer [actions, character, development, decision] ; the basic salary is governed by three factors le salaire de base est déterminé par trois facteurs ;5 Ling régir ;B vi [parliament, president] gouverner ; [administrator, governor] administrer. -
3 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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4 fit
A n1 Med crise f, attaque f ; to have a fit ( unspecified) avoir une attaque or une crise ; ( epileptic) avoir une crise d'épilepsie ;2 gen (of rage, passion, jealousy, panic) accès m ; in a fit of anger dans un accès de colère ; fit of coughing quinte f de toux ; fit of crying crise de larmes ; to have a fit of the giggles avoir le fou rire ; to have sb in fits ○ donner le fou rire à qn ; to have ou throw a fit ○ ( be mad) piquer ○ une crise ;3 ( of garment) to be a good/poor fit être/ne pas être à la bonne taille ; to be a tight fit être juste.B adj1 [person] ( in trim) en forme ; ( not ill) en bonne santé ; you're looking fit and well! tu as l'air en pleine forme! ; to keep/feel fit se maintenir/se sentir en forme ; to get fit se mettre en bonne condition ;2 (suitable, appropriate) to be fit company for être une bonne compagnie pour ; it's not a fit time to do ce n'est pas le moment de faire ; to be fit for ( worthy of) être digne de, convenir à [person, hero, king] ; ( capable of) être capable de faire [job] ; être capable de remplir [role] ; a land fit for heroes une terre digne des héros or qui convient aux héros ; to be only fit for the bin être juste bon/bonne à mettre à la poubelle ; to be fit for nothing n'être plus bon/bonne à rien ; fit for human consumption propre à la consommation ; not fit for swimming impropre à la baignade ; to be fit to do ( worthy of) être digne de faire ; ( in a condition to) être en état de faire ; ( qualified to) être apte à faire ; he's not fit to live il n'est pas digne de rester en vie ; to be fit to drive être en état de conduire ; to be fit to govern être apte à gouverner ; fit to drink potable ; fit to eat mangeable ; fit to live in habitable ; I'm not fit to be seen! je ne suis pas présentable! ; to see ou think fit to do juger or trouver bon de faire ; do as you see ou think fit faites comme bon vous semble ; when one sees ou thinks fit quand on le juge bon ; to be in no fit state to do ne pas être en état de faire ; it is fit that fml il est convenable que (+ subj) ;3 ○ ( in emphatic phrases) to laugh fit to burst se tordre de rire ; to cry fit to burst/to break your heart pleurer comme une Madeleine/à vous fendre le cœur ; to be fit to drop tomber de fatigue.1 ( be the right size) [garment] être à la taille de ; [shoe] être à la pointure de ; [object] aller sur [top, surface] ; aller dans [envelope, space] ; that dress doesn't fit me cette robe n'est pas à ma taille ; the key fits this lock/this box la clé va dans cette serrure/ouvre cette boîte ; to fit size X to Y correspondre aux tailles X à Y ; to fit ages 3 to 5 convenir aux enfants de 3 à 5 ans ; the jacket doesn't fit me across the shoulders la veste ne me va pas aux épaules ; ‘one size fits all’ ‘taille unique’ ;2 ( make or find room for) to fit sth in ou into loger qch dans, trouver de la place pour qch dans [room, house, car] ; can you fit this on your desk? peux-tu trouver de la place pour ça sur ton bureau? ;3 ( install) mettre [qch] en place [lock, door, window, kitchen, shower] ; to have sth fitted faire mettre qch en place ; to fit A to B, to fit A and B together assembler A avec B ; to fit sth into place mettre qch en place ; to fit sth with équiper qch de [attachment, lock] ; to be fitted with a radio être équipé d'une radio ;4 to fit sb for prendre les mesures de qn pour [garment, uniform] ; he's being fitted for a suit on est en train de lui prendre ses mesures pour un costume ; to fit sb with pourvoir qn de [hearing aid, prosthesis, pacemaker] ;5 ( be compatible with) correspondre à [description, requirements] ; aller avec [decor, colour scheme] ; we have no-one fitting that description nous n'avons personne qui corresponde à cette description ; the punishment should fit the crime la punition devrait être proportionnée à la faute ; ⇒ bill ;6 (qualify, make suitable) to fit sb for/to do [experience, qualifications] rendre qn apte à/à faire ; to be fitted for a role être apte à remplir un rôle.1 ( be the right size) [garment] être à ma/ta/sa taille, aller ; [shoes] être à ma/ta/sa pointure, aller ; [object, lid, sheet] aller ; these jeans fit, I'll take them ce jean est à ma taille, je le prends ; your jeans fit really well ton jean te va très bien ; this key doesn't fit cette clé ne va pas ;2 ( have enough room) tenir (into dans) ; the toys should fit into that box les jouets devraient tous tenir dans cette boîte ; will the table fit in that corner? y a-t-il de la place pour la table dans ce coin? ;3 ( go into designated place) to fit inside one another aller or se mettre les uns dans les autres ; to fit into a slot s'adapter or aller dans une fente ; to fit into place [part, handle] bien aller ; [cupboard, brick] bien rentrer ;4 fig (tally, correspond) his story doesn't fit son histoire ne tient pas debout ; something doesn't quite fit here il y a quelque chose qui ne va pas ici ; to fit with correspondre à [statement, story, facts] ; to fit into aller avec [ideology, colour scheme] ; it all fits into place! tout concorde!by ou in fits and starts par à-coups.■ fit in:▶ fit in1 lit [key, object] aller ; will you all fit in? (to car, room) est-ce qu'il y a de la place pour vous tous? ; these books won't fit in je n'arrive pas à caser ces livres ;2 fig ( be in harmony) s'intégrer (with à) ; he doesn't fit in il ne s'intègre pas ; I'll fit in with your plans j'accorderai mes projets avec les vôtres ;▶ fit [sth] in, fit in [sth]2 ( find time for) caser [game, meeting, break] ;▶ fit [sb] in, fit in [sb] trouver le temps pour voir [patient, colleague].■ fit on:▶ fit on aller ; where does it fit on? où est-ce que ça va? ;▶ fit on(to) [sth] aller sur ; this part fits on(to) this section ce morceau va sur cette partie ;▶ fit [sth] on mettre [top, piece].■ fit out, fit up:▶ fit [sth] out ou up, fit out ou up [sth] équiper (with de) ; to fit sth out as an office équiper qch pour en faire un bureau ; to fit sb out ou up with mettre [qch] à qn [costume, garment, hearing aid]. -
5 governor
1) (in the United States, the head of a state: the Governor of Ohio.) gouverneur/-eure2) (a member of the committee of people who govern a school, hospital etc: He is on the board of governors.) administrateur/-trice3) (a person who governs a province or colony.) gouverneur/-eure
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