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1 code current
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2 code current
Железнодорожный термин: кодированный ток (комбинация частот или импульсов) -
3 code current
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4 code current
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5 code current frequency
Телекоммуникации: частота кодового сигналаУниверсальный англо-русский словарь > code current frequency
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6 code current frequency
Англо-русский железнодорожный словарь > code current frequency
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7 code current track circuit
Англо-русский железнодорожный словарь > code current track circuit
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8 code-current control
Англо-русский железнодорожный словарь > code-current control
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9 code current frequency
English-Russian dictionary of modern telecommunications > code current frequency
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10 code current frequency
English-Russian dictionary of Information technology > code current frequency
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11 code
- code
- nправила, свод правил
- codes of practice
- code of Practice on safety
- building code
- color code
- current design codes
- fire code
- local building codes
- safety code
- safety code for cranes
- seismic building code
- signal code
- state building code
- uniform building code
- weather code
Англо-русский строительный словарь. — М.: Русский Язык. С.Н.Корчемкина, С.К.Кашкина, С.В.Курбатова. 1995.
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12 current
1. n течение, потокgreat ocean currents such as the Gulf Stream — сильные океанские течения, например Гольфстрим
2. n струя, тяга воздуха3. n амер. гидр. приливное или неприливное течение; поток4. n течение, ход5. n эл. электрический ток6. a текущий; нынешний; современныйcurrent situation — современное положение; текущий момент
current fashions — современные фасоны; последняя мода
7. a циркулирующий; находящийся в обращении, ходячийcurrent bank notes — банкноты, находящиеся в обращении
circulating current — циркулирующий ток; блуждающие токи
current proof — пробный оттиск газеты, находящейся в печати
8. a австрал. разг. родившийся в Австралии9. a физ. токовый, связанный с протеканием токаСинонимический ряд:1. fashionable (adj.) a la mode; accepted; fashionable; in vogue; stylish; topical2. modern (adj.) latter-day; modern; modern-day3. present (adj.) circulating; common; contemporary; existent; existing; extant; general; instant; new; popular; present; present-day; prevailing; prevalent; rampant; regnant; rife; ruling; todayish; up-to-date; vogue; widespread4. electricity (noun) electricity; juice5. stream (noun) course; draft; drift; flood; flow; flux; progress; progression; river; run; rush; spate; stream; tendency; tenor; tide; trendАнтонимический ряд:esoteric; obsolete; outmoded; private; rejected; secret; uncommon -
13 code
1) кодекс2) код; условные знаки; индекс3) система сигналов; шифр•- codes of design - code of practice - code of recommended practice - boiler code - building code - catalogue code - identifying code - international codes - postal code - project code - safety code - sanitary code - standard code - vendor code - water code* * *правила, свод правил- codes of practice
- code of Practice on safety
- building code
- color code
- current design codes
- fire code
- local building codes
- safety code
- safety code for cranes
- seismic building code
- signal code
- state building code
- uniform building code
- weather code -
14 current-carrying capacity
(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
предельно допустимый ток
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]Тематики
- электротехника, основные понятия
EN
прочность печатной платы к токовой нагрузке
Свойство печатной платы сохранять электрические и механические характеристики после воздействия максимально допустимой токовой нагрузки на печатный проводник или металлизированное отверстие печатной платы.
[ ГОСТ Р 53386-2009]Тематики
EN
Англо-русский словарь нормативно-технической терминологии > current-carrying capacity
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15 code
1) код2) шифр3) программа•- access code
- adaptive predictive code
- additional code
- address code
- Aiken code
- Alpha code
- alphabetic code
- alphanumeric code
- alternate mark inversion code
- alternating code
- ambush code
- answer-back code
- application code
- area code
- authentication code
- automatic code
- backward f-code
- balanced code
- bar code
- Baudot code
- binary code
- bi-phase code
- block code
- Bose-Chaudhuri-Hocquenguem code
- cable code
- call direction code
- called station code
- calling code
- carrier recovering code
- CCIT2 code
- central office code
- closed group locking code
- color code
- comma-free code
- command code
- complement code
- completion code
- computer code
- concatenated code
- condition code
- constant code
- Continental code
- continuous-radio code
- convolutional code
- correcting code
- country code
- creeping code
- cyclic code
- data code
- data-network identification code
- decade code
- decimal code
- dense-binary code
- destination point code
- device control codes
- directing code
- display-unlock code
- distribution code
- double-current cable code
- double-pulse code
- drop-frame time code
- dynamic code
- eight-level code
- engineering code
- equal-length code
- error code
- error status code
- error-correcting code
- error-detection code
- even code
- excessless code
- execution operation code
- extended binary-coded decimal-interchange code
- extension-start code
- fault code
- frame rate code
- framing code
- gold code
- Gray code
- group start code
- Hagelbarger code
- Hamming code
- identifying code
- instruction code
- international cable code
- international dialing code
- interpretative code
- invalid code
- inverse code
- iterative code
- letter code
- line code
- linear code
- local code
- long code
- magnetic code
- Manchester code
- marking code
- message-authentication code
- Miller-square code
- minimum-distance code
- modified-AMI code
- modified-Huffman code
- Morse code
- Morse-cable code
- multilevel code
- multiple-address code
- multiple-frequency code
- Murray code
- n-ary code
- natural code
- n-channel code
- n-digit code
- n-level code
- nonbinary code
- nonlinear code
- nonprint code
- n-unit code
- one-address code
- one-level code
- optical line code
- optimum code
- originating point code
- outgoing station code
- overprecision code
- packet-linear code
- paired-disparity code
- pair-separated triple code
- panel code
- paper-tape code
- parallel code
- pattern code
- perfect code
- permutation code
- personal code
- picture start code
- PIN code
- polar code
- polinomial code
- polling ID code
- prefix code
- prefix-free code
- primary code
- primitive code
- printing telegraph code
- private code
- product code
- programmable unlock code
- pseudorandom noise code
- PST code
- pulse code
- punch-tape code
- quant scale code
- quasi-perfect code
- quick-dial code
- radio search code
- recycling code
- redundant code
- Reed-Solomon code
- reference select code
- reflected code
- reflex binary code
- remote fax activation code
- retrieval code
- return code
- road code
- ROMable code
- routing code
- RS-code
- RZ-code
- selector call code
- self-demarcating code
- self-synchronizing code
- self-testing code
- series code
- signaling code
- simple code
- single-digit code
- single-frequency code
- skip code
- slice start code
- speed-dial code
- stage code
- start code
- startstop code
- stop code
- syllable code
- symmetrical code
- synchronization code
- system code
- systematic error checking code
- tag code
- telegraph code
- teleprinter code
- teletypewriter code
- three-digit code
- time code
- transmission system code
- trellis code
- trouble code
- trunk code
- two-digit code
- two-out-of-five code
- uneven code
- unified code
- unit code
- unit-distance code
- user-data start code
- variable length code
- vertical interval time code
- watchdog code
- Z-codeEnglish-Russian dictionary of telecommunications and their abbreviations > code
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16 current-carrying capacity
1. допустимая нагрузка током2. нагрузочная способность по токуEnglish-Russian big polytechnic dictionary > current-carrying capacity
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17 code generator
1. кодогенератор; генератор кода; блок генерации2. кодогенератор; генератор кода; блок генерации программы -
18 current instruction
instruction code — код команды; система команд; набор команд
do-nothing instruction — холостая команда; фиктивная команда
skeleton instruction — команда-заготовка; скелетная команда
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19 current number
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20 current of set
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