-
1 sustaining capacity
- sustaining capacity
- n
Англо-русский строительный словарь. — М.: Русский Язык. С.Н.Корчемкина, С.К.Кашкина, С.В.Курбатова. 1995.
Англо-русский словарь строительных терминов > sustaining capacity
-
2 sustaining capacity
Строительство: несущая способность -
3 sustaining capacity
-
4 loss of sustaining capacity
- loss of sustaining capacity
- n
Англо-русский строительный словарь. — М.: Русский Язык. С.Н.Корчемкина, С.К.Кашкина, С.В.Курбатова. 1995.
Англо-русский словарь строительных терминов > loss of sustaining capacity
-
5 loss of sustaining capacity
Строительство: потеря несущей способностиУниверсальный англо-русский словарь > loss of sustaining capacity
-
6 loss of sustaining capacity
Англо-русский строительный словарь > loss of sustaining capacity
-
7 capacity
- capacity
- n1. производительность
2. грузоподъёмность
3. вместимость
4. мощность
5. способность ( материала)
6. электрическая ёмкость
7. подача (напр. насоса)
8. расход, пропускная способность
9. объём жидкости в сосуде, заполненном на 75 мм ниже переливного отверстия или верхнего края ( в сантехнике)
10. транспортирующая способность ( водного потока при переносе наносов)
- capacity of stream
- absolute traffic capacity
- absorbent capacity
- actual capacity
- actual carrying capacity
- adequate load-carrying capacity
- aerodrome handling capacity
- air capacity
- air carrying capacity
- airport capacity
- allowable bearing capacity
- apparent specific heat capacity
- average annual working capacity
- bearing capacity
- boiler capacity
- bucket capacity
- carrying capacity
- carrying capacity of a line
- channel capacity
- cooling capacity
- covering capacity
- damping capacity
- deformation capacity
- dehumidifying capacity
- delivery capacity
- design capacity
- digging capacity of power shovels
- discharge capacity
- dust holding capacity
- energy-absorption capacity
- erecting equipment capacity
- exchange capacity
- exchange capacity of ion exchanger
- fabricating capacity
- fabricating plant capacity
- fan capacity
- field capacity
- filter capacity
- flood absorption capacity
- gate capacity
- gross storage capacity
- hauling capacity
- heat capacity
- heating capacity
- heat storage capacity
- highway traffic capacity
- hoisting capacity
- holding capacity
- hourly capacity
- humidification capacity
- hydroscopic capacity
- idle capacity
- intersection capacity
- inverted capacity
- ion-exchange capacity
- labor capacity
- lane capacity
- lateral capacity of pile
- lifting capacity
- loading capacity
- load capacity
- load-carrying capacity
- moisture capacity
- nominal capacity
- oxidation capacity
- oxygenating capacity
- parking capacity
- pile load capacity
- pile capacity
- pipe capacity
- possible capacity
- posted capacity
- practical runway capacity
- production capacity
- radiating capacity
- rated capacity
- rated capacity of jack
- rated pumping capacity
- refrigerating capacity
- regulating capacity
- regulation carrying capacity
- reservoir capacity
- rotation capacity
- runway capacity
- saturation runway capacity
- seating capacity
- sediment-carrying capacity
- skin resistance capacity
- slewing capacity
- solids take-up capacity
- specific heat capacity
- steam-generating capacity
- storage capacity
- strain capacity
- strength-developing capacity
- subsoil bearing capacity
- suction capacity
- sustaining capacity
- tank capacity
- taxiway capacity
- terminal capacity
- thermal capacity
- thermal capacity of building
- throughput capacity
- total cooling capacity
- total storage capacity
- track capacity
- traffic capacity
- truck capacity
- ultimate bearing capacity
- ultimate carrying capacity of pile
- ultimate point capacity
- ultimate pullout capacity
- ultimate runway capacity
- ultimate static pile point capacity
- useful capacity
- visual airport weather runway departure capacity
- visual airport weather runway capacity
- volumetric heat capacity
- water-carrying capacity
- waterholding capacity
- waterproofing capacity
- water-retaining capacity
- wearing capacity
- wear capacity
- well capacity
- working capacity
Англо-русский строительный словарь. — М.: Русский Язык. С.Н.Корчемкина, С.К.Кашкина, С.В.Курбатова. 1995.
-
8 capacity
1) паспортная мощность; допустимая нагрузка; производительность; выработка3) пропускная способность, расход4) ёмкость (напр. водохранилища, кузова)6) способность•capacity in bales — грузовместимость для киповых, штучных грузов
- capacity of a storage battery - capacity of boiler - capacity of cell - capacity of crane - capacity of driven pile - capacity of floating dock - capacity of heat - capacity of heat transmission - capacity of highway - capacity of reaction - capacity of road - capacity of saturation - capacity of stream - capacity of tyre - capacity of unit - capacity of vehicle - absorbing capacity - absorption capacity - active reservoir capacity - active storage capacity - actual reservoir capacity - adhesive capacity - adsorptive capacity - aggregate capacity - air-conditioner capacity - annual capacity - apparent contaminant capacity - atmospheric moisture capacity - available capacity - basic capacity - bearing capacity of beam - blotting capacity - blower capacity - body capacity - boiler full power capacity - boiler overload capacity - bucket capacity - bunker capacity - burner capacity - burning capacity - carrying capacity - carrying capacity of crane - carrying capacity of pipe - colloidal capacity of bituminous substances - contaminant capacity - continuous capacity - conveyance capacity - conveying capacity - cubic capacity - cutting capacity - cylinder capacity - damage capacity - damping capacity - deformation capacity - delivery capacity - dependable capacity - designed capacity - dipper capacity - discharge capacity - dissolving capacity - driving capacity - earning capacity - effective capacity - elevating capacity - emergency capacity - extra-load bearing capacity - fan capacity - filter capacity - freight capacity - fuel capacity - generator capacity - gross capacity - guaranteed capacity - hauling capacity - heap capacity - heat capacity - heating capacity - high capacity - holding capacity - hourly capacity - hydraulic reservoir charge capacity - idle capacity - inactive storage capacity - infiltration capacity - information capacity - intake capacity - inverted capacity - labour capacity - lateral capacity of pile - lifting capacity of crane - lime-binding capacity - load-carrying capacity - maximum capacity - net capacity - output capacity - overhead door capacity per day - overload capacity - parking capacity - payload capacity - petrol capacity - pigment binding capacity - pile capacity - pipe capacity - posted capacity - productive capacity - pump capacity - pylon capacity - rated capacity - rated crane capacity - rated pumping capacity - refrigerating capacity - reserve capacity - road capacity - runway capacity - sand-carrying capacity of lime - solids take-up capacity - spare capacity - specific capacity - specific heat capacity - strain capacity - subsoil bearing capacity - supporting capacity - tank capacity - tested capacity - total cooling capacity - tractive capacity - traffic capacity - throughput capacity - ultimate capacity - ultimate working capacity - useful capacity - water capacity - wearing capacity - weight-carrying capacity - working capacitycapacity in grane — грузовместимость для насыпных, зерновых грузов
* * *1. производительность2. грузоподъёмность3. вместимость4. мощность5. способность ( материала)6. электрическая ёмкость7. подача (напр. насоса)8. расход, пропускная способность9. объём жидкости в сосуде, заполненном на 75 мм ниже переливного отверстия или верхнего края ( в сантехнике)10. транспортирующая способность ( водного потока при переносе наносов)- capacity of stream
- absolute traffic capacity
- absorbent capacity
- actual capacity
- actual carrying capacity
- adequate load-carrying capacity
- aerodrome handling capacity
- air capacity
- air carrying capacity
- airport capacity
- allowable bearing capacity
- apparent specific heat capacity
- average annual working capacity
- bearing capacity
- boiler capacity
- bucket capacity
- carrying capacity
- carrying capacity of a line
- channel capacity
- cooling capacity
- covering capacity
- damping capacity
- deformation capacity
- dehumidifying capacity
- delivery capacity
- design capacity
- digging capacity of power shovels
- discharge capacity
- dust holding capacity
- energy-absorption capacity
- erecting equipment capacity
- exchange capacity
- exchange capacity of ion exchanger
- fabricating capacity
- fabricating plant capacity
- fan capacity
- field capacity
- filter capacity
- flood absorption capacity
- gate capacity
- gross storage capacity
- hauling capacity
- heat capacity
- heating capacity
- heat storage capacity
- highway traffic capacity
- hoisting capacity
- holding capacity
- hourly capacity
- humidification capacity
- hydroscopic capacity
- idle capacity
- intersection capacity
- inverted capacity
- ion-exchange capacity
- labor capacity
- lane capacity
- lateral capacity of pile
- lifting capacity
- loading capacity
- load capacity
- load-carrying capacity
- moisture capacity
- nominal capacity
- oxidation capacity
- oxygenating capacity
- parking capacity
- pile load capacity
- pile capacity
- pipe capacity
- possible capacity
- posted capacity
- practical runway capacity
- production capacity
- radiating capacity
- rated capacity
- rated capacity of jack
- rated pumping capacity
- refrigerating capacity
- regulating capacity
- regulation carrying capacity
- reservoir capacity
- rotation capacity
- runway capacity
- saturation runway capacity
- seating capacity
- sediment-carrying capacity
- skin resistance capacity
- slewing capacity
- solids take-up capacity
- specific heat capacity
- steam-generating capacity
- storage capacity
- strain capacity
- strength-developing capacity
- subsoil bearing capacity
- suction capacity
- sustaining capacity
- tank capacity
- taxiway capacity
- terminal capacity
- thermal capacity
- thermal capacity of building
- throughput capacity
- total cooling capacity
- total storage capacity
- track capacity
- traffic capacity
- truck capacity
- ultimate bearing capacity
- ultimate carrying capacity of pile
- ultimate point capacity
- ultimate pullout capacity
- ultimate runway capacity
- ultimate static pile point capacity
- useful capacity
- visual airport weather runway departure capacity
- visual airport weather runway capacity
- volumetric heat capacity
- water-carrying capacity
- waterholding capacity
- waterproofing capacity
- water-retaining capacity
- wearing capacity
- wear capacity
- well capacity
- working capacity -
9 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
-
10 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
-
11 loss
- loss
- n1. потеря
2. затухание; ослабление
3. ущерб, убыток
- loss of bond stress
- loss of gloss
- loss of head
- loss of prestressing
- loss of prestress
- loss of prestress due to friction
- loss of prestress due to shrinkage of concrete
- loss of prestress due to steam curing
- loss of prestress during anchoring
- loss of stability
- loss of stress
- loss of sustaining capacity
- loss of water by evaporation
- loss of workability
- abrasion loss
- absorption loss
- air pressure losses
- anchorage loss
- branch loss
- cable losses
- chimney loss
- conduction loss
- design heat loss
- drift loss
- dynamic loss
- elastic losses
- energy losses due to friction
- entrance loss
- evaporation loss
- exit loss
- external heat loss
- fabric loss
- flue loss
- friction loss
- gross heat loss
- head loss
- head loss across filter
- head loss due to friction
- heat loss
- ignition loss
- impact loss
- infiltration heat loss
- insertion loss
- leakage loss
- local loss
- lockage loss
- pipe loss
- seepage loss
- sequence-stressing loss
- shock loss
- shrinkage loss of prestress
- strength loss
- stress loss
- structural heat loss
- total loss of prestress
- transmission loss
- transmission heat loss
- ventilation heat loss
- wall losses
- water loss
Англо-русский строительный словарь. — М.: Русский Язык. С.Н.Корчемкина, С.К.Кашкина, С.В.Курбатова. 1995.
-
12 loss
1) потеря; убыль; угар ( при плавке); утечка ( тока)2) убытки; ущерб; урон•- loss of head - loss of pressure - loss of pressure due to friction - loss of pressure due to shrinkage of concrete - loss of pressure head - loss of prestress - loss of prestressing - loss of stability - loss of workability - conveyance loss - evaporation loss - friction loss - head loss - heat loss - pressure loss - rattler losses - seepage losses - transmission loss - ventilation losses - water loss* * *1. потеря2. затухание; ослабление3. ущерб, убыток- loss of bond stress
- loss of gloss
- loss of head
- loss of prestressing
- loss of prestress
- loss of prestress due to friction
- loss of prestress due to shrinkage of concrete
- loss of prestress due to steam curing
- loss of prestress during anchoring
- loss of stability
- loss of stress
- loss of sustaining capacity
- loss of water by evaporation
- loss of workability
- abrasion loss
- absorption loss
- air pressure losses
- anchorage loss
- branch loss
- cable losses
- chimney loss
- conduction loss
- design heat loss
- drift loss
- dynamic loss
- elastic losses
- energy losses due to friction
- entrance loss
- evaporation loss
- exit loss
- external heat loss
- fabric loss
- flue loss
- friction loss
- gross heat loss
- head loss
- head loss across filter
- head loss due to friction
- heat loss
- ignition loss
- impact loss
- infiltration heat loss
- insertion loss
- leakage loss
- local loss
- lockage loss
- pipe loss
- seepage loss
- sequence-stressing loss
- shock loss
- shrinkage loss of prestress
- strength loss
- stress loss
- structural heat loss
- total loss of prestress
- transmission loss
- transmission heat loss
- ventilation heat loss
- wall losses
- water loss -
13 bearing
̈ɪˈbɛərɪŋ I
1. сущ.
1) ношение
2) поведение, манера вести себя;
осанка, выправка dignified bearing ≈ достойное поведение military bearing ≈ военная осанка regal, royal bearing ≈ манера держать себя по-королевски Syn: carriage, deportment, behaviour, demeanour
3) геральдика девиз
4) терпение, выдержка, способность переносить (испытание, боль и т. п.) to be insolent beyond bearing ≈ быть невыносимо наглым beyond all bearing past all bearing Syn: endurance, sustaining, supporting
5) опора;
поддерживающая поверхность;
точка опоры A greater number of bearings is required to prevent the mirror from becoming strained by its own weight. ≈ Необходимо большое число опор, чтобы не дать зеркалу деформироваться под влиянием собственного веса.
6) давление, нажим Syn: pressure, thrust
7) а) отношение, аспект the legal bearings of the case ≈ юридические аспекты дела The subject was thoroughly examined in all its bearings. ≈ Вопрос был тщательно рассмотрен со всех точек зрения. Syn: relation, connection, aspect б) значение, смысл the precise bearing of the word ≈ точное значение слова Syn: purport
1.
8) подшипник roller bearing
9) направление;
азимут, пеленг, румб;
мн. месторасположение Long wave pulse transmitter.. to enable bearings on the aircraft to be obtained on the ground. ≈ Длинноволновый радиопередатчик, позволяющий с земли определить местонахождение самолета. lose bearings take bearings
10) рождение, произведение на свет
11) а) плодоношение Syn: yielding б) плоды, урожай Syn: crop
1., fruit
1.
2. прил.
1) несущий и т. п.;
см. значения глагола bear II
2) а) рожающий, рождающий б) плодоносящий;
плодородный soils of a good bearing quality ≈ очень плодородная земля Although it was not a 'bearing year', the exhibition was very fine. ≈ Хотя этот год не был 'плодородным', выставка оказалась великолепной. Syn: fertile, productive II прил.;
бирж. играющий на понижениеношение - the * of arms is forbidden ношение оружия запрещено рождение, произведение на свет плодоношение;
стадия или способность плодоношения - to keep trees in * ухаживать за деревьями, чтобы они приносили плоды плоды, урожай - rich mellow *s (образное) обильный урожай плодов поведение, манера держаться - they loved her for her kindly * ее любили за доброту /за приятное обхождение/ осанка, выправка - proud * гордая осанка - the * of a soldier военная выправка терпение;
выдержка - past *, beyond all * нестерпимо - there is no * him он невыносим отношение, аспект, сторона;
подход - to consider a matter in all its *s рассмотреть что-л. со всех сторон - the legal *s of a case юридическая сторона дела - to have no * on the subject не иметь отношения к делу /к теме/ - his foolish question has no * on the problem его глупый вопрос не по делу часто pl (специальное) направление, ориентация;
курс или направление по компасу, азимут, пеленГ6 румб - * error ошибка пеленга - radio * радиопеленг - magnetic * магнитный азимут /пеленг/;
направление магнитной стрелки - compass * компасный азимут, компасный пеленг;
направление по компасу - *s of smth. месторасположение чего-л. - to take one's *s определять свое положение, ориентироваться - to lose one's *s заблудиться, потерять ориентацию - to be out of * растеряться, запутаться( морское) местоположение корабля подшипник опора, точка опоры, опорная поверхность( горное) простирание( пласта или рудного тела) (геральдика) фигура( на гербе) > to bring smb. to his *s поставить кого-л. на место;
сбить с кого-л. спесь несущий (специальное) несущий, опорный - * cable несущий канат - * block опорная подушка - * capacity допустимая нагрузка, грузоподъемность;
подъемная способность (дрожжей) - * value см. * cvapacity - * picket( военное) артиллерийская опорная точка;
геодезическая веха производящий на свет;
рождающий;
плодоносящийarmorial ~ геральдическая фигураbearing pres. p. от bear ~ девиз (на гербе) ~ значение;
the precise bearing of the word точное значение слова ~ несущий ~ ношение ~ тех. опора;
точка опоры ~ отношение;
to consider a question in all its bearings рассматривать вопрос со всех сторон;
this has no bearing on the question это не имеет никакого отношения к делу, вопросу ~ pl мор., ав., воен. пеленг, румб;
азимут;
to lose one's bearings потерять ориентировку;
заблудиться;
перен. растеряться;
to take one's bearings ориентироваться, определять положение ~ плодоношение ~ поведение;
осанка;
манера держать себя ~ тех. подшипник;
roller bearing роликовый подшипник ~ рождающий, порождающий;
bearing finder пеленгатор;
bearing capacity грузоподъемность;
допустимая нагрузка ~ рождение, произведение на свет ~ терпение;
beyond (или past) all bearing нестерпимый;
нестерпимо~ рождающий, порождающий;
bearing finder пеленгатор;
bearing capacity грузоподъемность;
допустимая нагрузка capacity: bearing ~ несущая способность~ рождающий, порождающий;
bearing finder пеленгатор;
bearing capacity грузоподъемность;
допустимая нагрузка~ терпение;
beyond (или past) all bearing нестерпимый;
нестерпимо~ отношение;
to consider a question in all its bearings рассматривать вопрос со всех сторон;
this has no bearing on the question это не имеет никакого отношения к делу, вопросу~ pl мор., ав., воен. пеленг, румб;
азимут;
to lose one's bearings потерять ориентировку;
заблудиться;
перен. растеряться;
to take one's bearings ориентироваться, определять положение~ значение;
the precise bearing of the word точное значение слова~ тех. подшипник;
roller bearing роликовый подшипник roller: ~ attr. тех. роликовый;
вальцовый;
roller bearing роликовый подшипник~ pl мор., ав., воен. пеленг, румб;
азимут;
to lose one's bearings потерять ориентировку;
заблудиться;
перен. растеряться;
to take one's bearings ориентироваться, определять положение~ отношение;
to consider a question in all its bearings рассматривать вопрос со всех сторон;
this has no bearing on the question это не имеет никакого отношения к делу, вопросу -
14 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
Франко-русский словарь нормативно-технической терминологии > courant admissible, m
-
15 courant permanent 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
Франко-русский словарь нормативно-технической терминологии > courant permanent admissible, m
-
16 Dauerstrombelastbarkeit, f
(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
Немецко-русский словарь нормативно-технической терминологии > Dauerstrombelastbarkeit, f
-
17 Strombelastbarkeit, f
(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
Немецко-русский словарь нормативно-технической терминологии > Strombelastbarkeit, f
-
18 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)
-
19 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
-
20 supporting
1. a поддерживающий; опорныйsupporting gas — поддерживающий газ; подъемный газ
2. a вспомогательныйsupporting programme — кинофильмы, идущие в дополнение к основному
3. a тех. несущий4. a элк. крепление монтажаСинонимический ряд:1. aiding (adj.) aiding; assistant; assisting; auxiliary; cooperating; helpful; helping; sustaining2. positive (adj.) acknowledging; acquiescent; affirmative; agreeing; assenting; concurring; confirming; endorsing; positive3. backing (verb) advocating; backing; championing; get behind; plump for; side with; siding with; stand behind; upholding4. bearing (verb) abiding; accepting; bearing; brooking; digesting; enduring; going; lumping; standing; sticking out; stomaching; suffering; swallowing; sweating out; taking; tolerating5. bearing up (verb) bearing up; bolstering; bracing; buoy up; buoying up; buttressing; carrying; propping; shoring up; sustaining; underpropping6. holding (verb) holding; upholding7. keeping (verb) keeping; maintaining; provide for; providing for8. sponsoring (verb) patronising; sponsoring
- 1
- 2
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