-
21 ampacity (US)
(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 > ampacity (US)
-
22 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
-
23 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
-
24 switch
1) переключатель
2) включатель
3) выключатель
4) коммутационный механизм
5) переключать
6) переключение
7) шальтер
8) искатель
9) <comput.> кнопочный
10) коммутатор
11) < railways> стрелочный
12) включать
13) менять направление
14) выключать
15) переключательный
16) прут
17) штепсель
18) штепсельный
19) ключ
20) многоходовой
21) трансформаторный
– acknowledging switch
– air-break switch
– air-pressure switch
– alternate switch
– antenna switch
– antenna-ground switch
– anti-capacitance switch
– assignment switch
– at flick of switch
– automatic switch
– band switch
– barometric switch
– battery switch
– branch switch
– by-pass switch
– cam switch
– cam-operated switch
– cell switch
– challenge switch
– channel switch
– close switch
– connector switch
– control switch
– controlled switch
– cradle switch
– cross-bar switch
– crossbar switch
– crosspoint switch
– cutoff switch
– delayed-action switch
– diode switch
– door-operated switch
– double-break switch
– double-pole switch
– double-throw switch
– double-way switch
– drum switch
– earthing switch
– electronic switch
– emergency switch
– enclosed switch
– end cell switch
– end switch
– end-cell switch
– entrance switch
– explosion-proof switch
– ferrite switch
– filament switch
– finder switch
– flag switch
– flush-mounting switch
– foot switch
– forestalling switch
– four-layer switch
– function switch
– fuse switch
– gang switch
– gate-activated switch
– grounding switch
– group switch
– hand-operated switch
– high-speed switch
– horn-gap switch
– interlocked switch
– interval cam switch
– knife switch
– lever switch
– limit switch
– liquid-level switch
– mains switch
– master switch
– matrix switch
– mercury switch
– minor switch
– motor-operated switch
– multi-pole switch
– multi-position switch
– multiple switch
– multiple-contact switch
– multipole switch
– multiway switch
– nut switch
– oil-immersed switch
– on-off switch
– one-motion switch
– open switch
– oscillating switch
– outlying switch
– pendulum switch
– piano-key switch
– plug switch
– plug-in switch
– pole switch
– power switch
– power-operated switch
– proximity switch
– push-button switch
– range switch
– reed switch
– relay switch
– remote switch
– reset switch
– rocker switch
– rotary switch
– route switch
– safety switch
– sectionalizing switch
– semiconductor switch
– single-break switch
– single-pole switch
– single-way switch
– slide switch
– solenoid switch
– solenoid-operated switch
– solid-state switch
– spring-return switch
– starting switch
– static switch
– step switch
– step-by-step switch
– stepping switch
– Strowger switch
– surface switch
– switch adjustment
– switch apparatus
– switch arm
– switch board
– switch chair
– switch circuit
– switch contacts
– switch engine
– switch in use
– switch indicator
– switch key
– switch lamp
– switch off
– switch on light
– switch out of use
– switch tie
– switch tongue
– switch tower
– switch tracks
– thermal switch
– throw a switch
– throwing of a switch
– thyristor switch
– toggle switch
– transfer switch
– transistor switch
– transmit-receive switch
– two-motion switch
– vacuum switch
– voltage-selector switch
– wafer switch
– wave-range switch
azimuth stowing switch — <tech.> ключ походного положения азимутальный
field discharge switch — <electr.> автомат гашения поля
magnetically operated switch — выключатель с магнитным приводом
momentary action switch — клавишный переключатель без фиксации
move switch to OFF position — ставить выключатель в положение ВЫКЛ
move switch to ON position — ставить выключатель в положение ВКЛ
numerical connector switch — искатель с вынужденным движением
silicon bilateral switch — тиристор симметричный пороговый триодный
switch laser Q to a low value — выключать добротность лазера
switch machine lever — рукоятка управления стрелочным приводом
switch section of multiple — секция многократного поля добавочная
switch signal lever — < railways> рукоятка стрелочного указателя
trafction indicator switch — переключатель указателя поворота
-
25 expenditure
n1) расход, расходование; трата, потребление3) расходы, затраты, издержки
- accrued expenditures
- actual gross expenditures
- additional expenditures
- administrative expenditures
- advertising expenditures
- aggregate expenditures
- agricultural expenditures
- armament expenditures
- brand advertising expenditures
- budget expenditures
- budgeted expenditures
- budget loan expenditures
- business expenditures
- capital expenditures
- capital expenditures on equipment
- capital goods expenditures
- cash expenditures
- consumption expenditures
- cumulative expenditures
- current expenditures
- defence expenditures
- design expenditures
- development expenditures
- environmental expenditures
- estimated expenditures
- excess expenditures
- extra expenditures
- extra-budgetary expenditures
- extraordinary expenditures
- federal expenditures
- fixed capital expenditures
- foreign expenditure
- general average expenditures
- general government expenditures
- government expenditures
- government capital expenditures
- government loan expenditures
- health expenditures
- housing expenditures
- idle facility expenditure
- indirect expenditures
- induced expenditures
- initial expenditures
- initial capital expenditures
- internal administrative expenditures
- investment expenditures
- labour expenditure
- lavish expenditures
- lobbying expenditures
- maintenance expenditures
- maximum expenditures
- military expenditures
- minimum expenditures
- motor expenditures
- national expenditures
- nonproductive expenditures
- nonrecurrent expenditures
- nonrecurring expenditures
- operating expenditures
- operational expenditures
- passenger service expenditures
- personal consumption expenditures
- planned expenditures
- port expenditures
- productive expenditures
- promotional expenditures
- public expenditures
- public capital expenditures
- publicity expenditures
- recoverable expenditures
- recurrent expenditures
- recurring expenditures
- rent expenditure
- research expenditures
- research and development expenditures
- revenue expenditures
- routine expenditures
- ruinous expenditures
- running expenditures
- social expenditures
- social security expenditures
- state expenditures
- taxable expenditures
- total expenditures
- transfer expenditures
- unallocable expenditures
- unproductive expenditures
- waste expenditure
- wasteful expenditures
- welfare expenditures
- work time expenditures
- expenditure of capital
- expenditures of future periods
- expenditure of human labour
- expenditure of labour power
- expenditures charged to a capital account
- expenditures charged to a depreciation reserve
- expenditures on personnel
- expenditures on selling effort
- expenditures on state apparatus
- expenditures per unit of output
- free of all expenditures
- allocate expenditures
- approve expenditures
- authorize expenditures
- cover expenditures
- cut expenditures
- draw in expenditures
- incur expenditures
- meet expenditures
- overestimate expenditures
- prescribe expenditure
- reduce expenditures
- restrict expenditures
- sequestrate expenditures
- slash expenditure
- undertake expendituresEnglish-russian dctionary of contemporary Economics > expenditure
-
26 a palace revolution
Many of the innumerable conquests of power by this or that "strong man" were simply "palace revolutions", seizures of the State apparatus by rival cliques of army officers who were in no way hostile to the ruling landowners. (W. Foster, ‘Outline Political History of the Americas’, ch. 18) — В большинстве случаев бесчисленные захваты власти "сильными личностями" были просто-напросто дворцовыми переворотами, государственная власть переходила от одной клики армейских офицеров к другой, причем сами по себе эти соперничавшие клики отнюдь не были враждебны правящему классу землевладельцев.
-
27 static
статика; статические свойства (напр. балансировки колеса); электростатические явления; помеха электростатического происхождения; атмосферные помехи; ухудшение; усугбление; II статический; стационарный; неподвижный- static aeroelasticity - static air pressure - static angle of friction - static arrester - static breakdown voltage - static breeze - static buffering - static characteristic - static charge - static charge meter - static check - static coefficient - static commutation - static compaction - static compensation - static compensator - static conditions - static connection seal - static contact - static control - static controller - static current - static discharge - static discharge protection - static disturbance - static dump - static elasticity - static electricity test - static electromechanical relay - static elimination - static eliminator - static equilibrium equation - static error - static exciter - static failure - static force - static frequency converter - static friction force - static friction in suspension - static fuel flow method - static high-voltage distribution - static imbalance - static inverter - static indentation method - static load rating - static-loaded tyre radius - static loading - static loading fixture - static loading stress - static lubrication - static mass balancing - static mass spectrometer - static measurements - static measuring force - static mode - static moment - static-moment calculation - static operating life test - static orifice - static overvoltage - static part - static pile driving resistance of soil - static potential - static power amplifier - static pressure - static pressure energy - static pressure gradient - static pressure profile - static pressure traverse - static protection device - static regime - static regulator - static relay - static relay with output contact - static roller - static safety factor - static scales - static seal - static spline - static spray scrubber - static spring deflection - static spring rate - static stability - static stator - static steady-state instability - static steering torque - static stiffness - static strength - static stress - static suction head - static suction lift - static switch - static time delay - static tipping load rating - static toe-in - static toe-out - static torque - static torque-vs-angular-displacement curve - static-type plow - static tyre deflection - static tyre rate - static unbalance - static-weight roller - coefficient of static friction - datum statics - lightning static - man-made statics - precipitation static - residual statics
- 1
- 2
См. также в других словарях:
state — state, the state The state is a distinct set of institutions that has the authority to make the rules which govern society . It has, in the words of Max Weber, a ‘monopoly on legitimate violence’ within a specific territory. Hence, the state… … Dictionary of sociology
State (polity) — This article is about the general concept of the state. For the subjects of international law, see Sovereign state. For other uses, see State (disambiguation). The frontispiece of Thomas Hobbes Leviathan A state is an organised political… … Wikipedia
State — A state is a political association with effective sovereignty over a geographic area and representing a population. These may be nation states, sub national states or multinational states. A state usually includes the set of institutions that… … Wikipedia
state — {{Roman}}I.{{/Roman}} noun 1 condition ADJECTIVE ▪ acceptable, fit, good, healthy ▪ She managed to get the company s finances into a healthy state. ▪ appalling (esp. BrE) … Collocations dictionary
State crime — In criminology, state crime is activity or failures to act that break the state s own criminal law or public international law. For these purposes, Ross (2000b) defines a state as the elected and appointed officials, the bureaucracy, and the… … Wikipedia
State terrorism — refers to acts of terrorism conducted by governments. ControversyLike the definition of terrorism and the definition of state sponsored terrorism, the definition of state terrorism remains controversial and without international consensus. [… … Wikipedia
State monopoly capitalism — Part of a series on Marxism … Wikipedia
state + geography — by John Protevi In A Thousand Plateaus the state s production of striated space has complex relations to numerous other spatialising processes. Among them we find two familiar forms: the territories operated by primitive societies and the… … The Deleuze dictionary
state + geography — by John Protevi In A Thousand Plateaus the state s production of striated space has complex relations to numerous other spatialising processes. Among them we find two familiar forms: the territories operated by primitive societies and the… … The Deleuze dictionary
state — statable, stateable, adj. /stayt/, n., adj., v., stated, stating. n. 1. the condition of a person or thing, as with respect to circumstances or attributes: a state of health. 2. the condition of matter with respect to structure, form,… … Universalium
Infrastructural power — is the capacity of the state to penetrate civil society and to use this penetration to enforce policy throughout its entire territory. [1] The concept of infrastructural power was introduced by sociologist Michael Mann in his article The… … Wikipedia
