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41 external power supply
1. внешний источник питания2. внешний источник энергииelectrical supply — источник тока; подача электроэнергии
English-Russian big polytechnic dictionary > external power supply
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42 DC power supply system
Авиация: direct current power supply systemУниверсальный англо-русский словарь > DC power supply system
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43 constant current
постоянный ток
Электрический ток, не изменяющийся во времени.
Примечание — Аналогично определяют постоянные электрическое напряжение, электродвижущую силу, магнитный поток и т. д.
[ ГОСТ Р 52002-2003]Параллельные тексты EN-RU For definition, the electric current called “direct” has a unidirectional trend constant in time.
As a matter of fact, by analyzing the motion of the charges at a point crossed by a direct current, it results that the quantity of charge (Q) flowing through that point (or better, through that cross section) in each instant is always the same.
[ABB]Постоянным током называется электрический ток, значение и направление которого, не изменяются во времени.
Если рассматривать постоянный ток как прохождение элементарных электрических зарядов через определенную точку, то значение заряда (Q), протекающего через эту точку (а вернее через это поперечное сечение проводника) за единицу времени будет постоянным.
[Перевод Интент]Direct current, which was once the main means of distributing electric power, is still widespread today in the electrical plants supplying particular industrial applications.
The advantages in terms of settings, offered by the employ of d.c. motors and by supply through a single line, make direct current supply a good solution for railway and underground systems, trams, lifts and other transport means.
In addition, direct current is used in conversion plants (installations where different types of energy are converted into electrical direct energy, e.g. photovoltaic plants) and, above all, in those emergency applications where an auxiliary energy source is required to supply essential services, such as protection systems, emergency lighting, wards and factories, alarm systems, computer centers, etc..
Accumulators - for example – constitute the most reliable energy source for these services, both directly in direct current as well as by means of uninterruptible power supply units (UPS), when loads are supplied in alternating current.
[ABB]Когда-то электрическая энергия передавалась и распределялась только на постоянном токе. Но и в настоящее время в отдельных отраслях промышленности постоянный ток применяется достаточно широко.
Возможности использования двигателей постоянного тока и передачи электроэнергии по линии с меньшим числом проводников дают неоспоримые преимущества при электроснабжении железных дорог, подземного транспорта, трамваев, лифтов и т. д.
Кроме того, существуют источники постоянного тока, являющиеся преобразователями различных видов энергии непосредственно в электрическую энергию, например, фотоэлектрические станции. Дополнительные источники постоянного тока применяют в аварийных ситуациях для питания систем защиты, аварийного освещения жилых районов и на производстве, систем сигнализации, компьютерных центров и т. д.
Для решения указанных задач наиболее подходящим источником электроэнергии является аккумулятор. Нагрузки постоянного тока получают электропитание непосредственно от аккумулятора. Нагрузки переменного тока – от источника бесперебойного питания (ИБП), частью которого является аккумулятор.
[Перевод Интент]Direct current can be generated:
- by using batteries or accumulators where the current is generated directly through chemical processes;
- by the rectification of alternating current through rectifiers (static conversion);
- by the conversion of mechanical work into electrical energy using dynamos (production through rotating machines).
[ABB]Постоянный ток можно получить следующими способами:
- от аккумуляторов, в которых электрическая энергия образуется за счет происходящих внутри аккумулятора химических реакций;
- выпрямлением переменного тока с помощью выпрямителей (статических преобразователей);
- преобразованием механической энергии в электрическую с помощью генераторов постоянного тока (вращающихся машин).
[Перевод Интент]In the low voltage field, direct current is used for different applications, which, in the following pages, have been divided into four macrofamilies including:
- conversion into other forms of electrical energy (photovoltaic plants, above all where accumulator batteries are used);
- electric traction (tram-lines, underground railways, etc.);
- supply of emergency or auxiliary services;
- particular industrial installations (electrolytic processes, etc.).
[ABB]Можно выделить четыре области применения постоянного тока в низковольтных электроустановках:
- преобразование различных видов энергии в электрическую (фотоэлектрические установки с аккумуляторными батареями);
- энергоснабжение транспорта на электрической тяге (трамваи, метро и т. д.)
- электропитание аварийных или вспомогательных служб;
- специальные промышленные установки (например, с использованием электролитических процессов и т. п.).
[Интент]Тематики
- электротехника, основные понятия
Синонимы
EN
ток постоянной величины
неизменный 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
Синонимы
EN
Англо-русский словарь нормативно-технической терминологии > constant current
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44 alternating current
эл. переменный токСинонимический ряд:electric current (noun) current; direct current; electric current; electricity; high voltage; power; public utilities; spark; voltage -
45 alternating current
= AC; = a.c.; = I ACэлектрический ток ( electric current), например в обычной электросети, меняющий своё направление с частотой 50 Гц - в России и 60 Гц - в США. Может быть представлен в виде синусоидальной волныAnt:Англо-русский толковый словарь терминов и сокращений по ВТ, Интернету и программированию. > alternating current
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46 RF power supply
English-Russian dictionary on nuclear energy > RF power supply
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47 off-site power supply
нормальное питание от постороннего источника; нормальное питание от сети; электроэнергия от постороннего источника; электроэнергия от сетиEnglish-Russian dictionary on nuclear energy > off-site power supply
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48 outside power supply
нормальное питание от постороннего источника; нормальное питание от сети; электроэнергия от постороннего источника; электроэнергия от сетиEnglish-Russian dictionary on nuclear energy > outside power supply
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49 radio-frequency power supply
English-Russian dictionary on nuclear energy > radio-frequency power supply
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50 continuous current-carrying capacity
длительная пропускная способность по току
—
[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
(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
Англо-русский словарь нормативно-технической терминологии > continuous current-carrying capacity
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51 continuous current
(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
непрерывный ток
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999]Тематики
- электротехника, основные понятия
EN
Англо-русский словарь нормативно-технической терминологии > continuous current
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52 DCPSP
direct-current power supply panel - панель источников питания постоянного тока -
53 DCPA
усилитель мощности постоянного тока в системе оборудования BTSАнгло-русский cловарь терминов и сокращений по мобильной радиосвязи стандарта GSM > DCPA
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54 DCP
1) Общая лексика: Directorate Change Panel (SEIC), Dental Care Professional (dental nurses, hygienists, therapists and technicians)2) Компьютерная техника: Data Collection Processor, Distributive Collaboration and Prioritization, цифровой процессор обработки звука, digital sound processor3) Авиация: Discrete Coding Panel4) Спорт: Don't Count Points5) Военный термин: Damage Control Party, Damage Control Plate, Defense Civilian Personnel, Defense Cryptologic Program, Direct Combat Probability, Director of Civilian Personnel, Directorate of Civilian Personnel, Dolphin Communication Project, data collecting platform, decision coordination paper, defense capability in personnel, defense cooperation program, degree completion program, dental continuation pay, depth charge projector, design change proposal, development concept paper, disaster control plan, display control panel, division contract point6) Техника: 1, 3-dichloropropene, 2,4-dichlorophenol, design change package, digital clock pulse, digital computer programming, digital contour processing, document control procedure, direct control panel7) Сельское хозяйство: Dicalcium Phosphate, digestible crude protein8) Химия: dichloropropanol9) Математика: Differential Characteristic Probability10) Метеорология: Data Collection Package11) Юридический термин: delivered freight/carriage paid to (...)12) Астрономия: Direct Current Power system13) Биржевой термин: Defined Contribution Plan14) Музыка: Drum Corps Planet, Drums, Chicken, and Poop15) Политика: Democracy Cell Project16) Телекоммуникации: Digital Communications Protocol17) Сокращение: Decision Co-ordinating Paper (USA), Decision Coordinating Paper, Digital Communications Processor, Diploma in Clinical Pathology, Dual Circularly Polarized (antenna), Deputy Commissioner of Police (заместитель комиссара полиции; сокращение принято в Индии)18) Университет: Degree Confluence Project, Delta College Programming, Disabilities and Computing Program19) Физика: Dielectronic Core Polarization20) Физиология: dipeptidyl carboxypeptidase I21) Школьное выражение: Denver Cooperative Preschool22) Электроника: Direct Current Plasma, Direct Current Power23) Вычислительная техника: data communications processor, differential computing potentiometer, display control program, distributed communications processor, distributed component platform, Data Compression Protocol (Motorola)24) Литература: Distinguished Club Program25) Нефть: freight or carriage paid26) Иммунология: Disease Control Priorities27) Космонавтика: Data Collection Platform28) Фирменный знак: Derry City Productions, Diablo Custom Publishing, Die Cast Promotions, Disney Consumer Products29) Экология: Diversion Control Program, платформа для сбора данных30) Деловая лексика: Deferred Compensation Plan31) Глоссарий компании Сахалин Энерджи: предположения об изменениях в проекте (Design Change Proposal)32) Образование: Downtown College Prep33) Сетевые технологии: data communication processor, процессор передачи данных34) Полимеры: dicapryl phthalate, dicumyl peroxide, dicyclopentadiene, dicyclor hexyl phthalate35) Безопасность: Default Children Pids36) Расширение файла: Device Control Protocol, Data CodePage (OS/2), Device code page (OS/2), Digital Light Processing (TI), OS/2 device code page37) Пожарное дело: огнетушащий порошок (dry chemical powder)38) Фармация: Decentralized procedure39) Программное обеспечение: DCP Compression Protocol, Data Compression Protocol, Delphi Compiled Package, Digital Copy Permitted -
55 DCPA
1) Морской термин: Distance to the Closest Point of Approach2) Военный термин: Defense Civil Preparedness Agency3) Техника: 2, 4-dichlorophenoxyacetic acid, direct current power amplifier, driver control power amplifier4) Сокращение: Defense Civil Preparedness Agency (USA)5) Театр: Denver Center for the Performing Arts6) Транспорт: Defense Civil Preparedness Agency (US)7) Программное обеспечение: Data Capture and Processing Application8) Хобби: Dutchess County Pistol Association -
56 DCPA
1. 2,4- dichlorophenoxyacetic acid - 2,4-дихлорфеноксиуксусная кислота; 2,4-Д;2. Defense Civil Preparedness Agency - Управление гражданской обороны;3. direct current power amplifier - усилитель мощности постоянного тока;4. driver control power amplifier - усилитель мощности в системе управления приводом -
57 DCOK
1) Компьютерная техника: Direct Current power OK2) Юридический термин: District Court Of Kathmandu -
58 DCPS
1) Военный термин: Data Communications Protocol Standard2) Техника: data compression processing system, data control panel submodule, dynamic crew procedures simulator3) Сокращение: Data Collection & Processing System4) Школьное выражение: Dade County Public Schools, Date County Public Schools, Duval County Public Schools5) Электроника: Direct Current Power System6) Вычислительная техника: Data Communications Protocol Standards7) Фирменный знак: District of Columbia Pawn Shop8) Образование: District Of Columbia Public School9) Правительство: Dorchester Center Postal Station -
59 DCPSP
Электротехника: direct-current power supply panel -
60 DCPSP
панель питания постоянного тока
—
[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
Англо-русский словарь нормативно-технической терминологии > DCPSP
См. также в других словарях:
Direct current — (red curve). The horizontal axis measures time; the vertical, current or voltage. Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by such sources as batteries, thermocouples, solar cells, and… … Wikipedia
direct current — n. an electric current flowing in one direction: abbrev. DC: cf. ALTERNATING CURRENT * * * ▪ electronics abbreviation Dc, flow of electric charge that does not change direction. Direct current is produced by batteries, fuel cells,… … Universalium
direct current (DC) — Flow of electric charge that does not change direction. Direct current is produced by batteries, fuel cells, rectifiers, and generators with commutators. Direct current was supplanted by alternating current (AC) for common commercial power in the … Universalium
power for direct current — nuolatinės srovės galia statusas T sritis Standartizacija ir metrologija apibrėžtis Dydis, išreiškiamas nuolatinės įtampos ir srovės stiprio sandauga: P = U · I; čia U – įtampa (potencialų skirtumas), I – srovės stipris. atitikmenys: angl. power… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
power for direct current — nuolatinės srovės galia statusas T sritis fizika atitikmenys: angl. power for direct current vok. Gleichstromleistung, f rus. мощность постоянного тока, f pranc. puissance de courant continu, f … Fizikos terminų žodynas
direct-current supply — maitinimas nuolatine srove statusas T sritis automatika atitikmenys: angl. d.c. power supply; direct current supply vok. Gleichstromspeisung, f rus. питание постоянным током, n pranc. alimentation continue, f; alimentation en courant continu, f … Automatikos terminų žodynas
direct current — F/A/V electricity that maintains a steady flow and does not reverse direction, unlike alternating current (AC). Usually provided by batteries, AC to DC transformers, and power supplies … Audio and video glossary
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