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1 melt temperature
The English-Russian dictionary general scientific > melt temperature
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2 melt temperature
Химия: температура расплава -
3 melt temperature
English-russian plastics terminology dictionary > melt temperature
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4 melt temperature
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5 melt temperature
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6 melt temperature
English-Russian small dictionary of medicine > melt temperature
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7 melt
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8 melt
1. Iice (snow, wax, a candle, etc.) melts лед и т.д. тает; metal (iron, ice, etc.) melts металл и т.д. плавится; his heart melted его сердце растаяло /смягчилось/2. IImelt in some manner melt quickly (slowly, completely, easily, gradually, partially, etc.) быстро и т.д. таять /плавиться/; the mist (the clouds, etc.) melted rapidly туман и т.д. быстро рассеялся; the butter has melted at once масло сейчас же разошлось /растопилось/3. IIImelt smth. melt wax (snow, ice, etc.) растапливать /расплавлять/ воск и т.д.; melt iron (glass, metal, etc.) плавить железо и т.д., pity (smb.'s tears, smb.'s entreaties, etc.) melted his heart жалость и т.д. смягчала /растопила/ его сердце, жалость и т.д. смягчала его; melt the mist (the clouds, etc.) разогнать /рассеять/ туман и т.д.4. IVmelt smth. in some manner melt smth. partially (gradually, methodically, scientifically, at last, accidentally, etc.) частично и т.д. растопить /расплавить/ что-л.5. XVI1) melt in smth. lead (glass, etc.) melts in the fire свинец и т.д. плавится в огне; sugar (this powder, etc.) melts in water (in one's tea, etc.) сахар и т.д. растворяется в воде и т.д.; these pears melt in the mouth эти груши так и тают во рту; melt at smth. melt at a great heat (at a given temperature, etc.) плавиться от жары и т.д., melt with smth. melt with love (with sympathy, with pity, with tenderness, etc.) таять /млеть/ от любви и т.д.; melt into smth. the man (the beggar, etc.) melted into the night человек и т.д. исчез /растаял/ в ночи2) melt into smth. the sea (the ocean, the outline, etc.) melts into the sky on the horizon (into each other, etc.) море и т.д. сливается с небом на горизонте и т.д.6. XXI1melt smth. into smth. melt all the colours into one сплавить все цвета вместе; melt smth. in smth. melt butter in a pan (in hot water) распустить /растопить/ масло на сковороде (в горячей воде) -
9 temperature
температура; температурная граница; температурный temperature of inflammation температурное воспламенение temperature ablation - температура абляции temperature absolute - абсолютная температура в Кельвинах temperature actual - истинная температура temperature ag(e)ing - температура старения temperature ambient - температура окружающей среды temperature ash-fusion - температура плавления золы temperature atmospheric - атмосферная температура, температура воздуха в атмосфере temperature autoignition - температура самовоспламенения temperature background - фоновая температура temperature "black(ness)" - «черная» температура, температура абсолютно черного тела temperature boiling - температура (точка) кипения temperature breakdown - температура разложения temperature breathing line - температура на уровне головы temperature bulk - средняя температура массы (вещества); объемная температура temperature burning - температура горения temperature ceiling - температура у потолка; предельная температура (использования) temperature centigrade - температура в градусах Цельсия temperature chamber - температура в камере сгорания temperature chamber-wall - температура стенок камеры сгорания temperature combustion - температура горения temperature combustion gas - температура газообразных продуктов сгорания temperature comfort - эффективная температура temperature compression - температура (в конце) сжатия temperature condensing - температура сжижения (конденсации) temperature consolidation - температура спекания temperature coolant - температура охлаждающей среды temperature critical - критическая температура temperature cryogenic - криогенная температура temperature crystallization - температура кристаллизации temperature curing - температура выдержки или отверждения temperature cycle - температура цикла temperature decomposition - температура разложения temperature deformation - температура деформации temperature degassing - температура обезгаживания (дегазации) temperature dew-point - температура точки росы (конденсации), точка росы temperature discharge - температура выхлопных газов temperature dissociation - температура диссоциации (разложения) temperature effective - эффективная температура temperature elevated - повышенная температура temperature emitter - температура излучения temperature environment(al) - температура окружающей среды temperature equilibrium - установившаяся (равновесная) температура temperature exhaust - температура выхлопных газов temperature extraordinarily high - сверхвысокая температура temperature Fahrenheit - температура по шкале Фаренгейта temperature fail - температура разрушения temperature firing - температура воспламенения temperature flame - температура воспламенения или пламени temperature flash - температура вспышки temperature floor - температура у пола temperature flowing - температура оплавления (покрытий) temperature free-air - температура наружного воздуха temperature freezing - температура затвердевания (замерзания) temperature fuel element - температура топливного элемента temperature fusion - температура (точка) плавления temperature gas absorption - температура газоноглощения temperature gas-inlet - входная (начальная) температура газа temperature gelatinization - температура желатинизации temperature hardening - температура закалки или твердения temperature heating - температура нагрева temperature heat-rejection - температура отвода тепла temperature heat-treatment - температура термической обработки temperature holding - температура выдержки temperature ignition - температура воспламенения temperature impact - температура при ударе temperature indoor - комнатная температура temperature infiltration - температура пропитки temperature initial - начальная температура temperature inlet - начальная температура, температура на входе temperature inlet - of air - температура поступающего воздуха temperature intake - начальная температура, температура на входе temperature ionization - температура ионизации temperature irradiation - температура облучения temperature isothermal - изотермическая температура temperature Kelvin - температура в Кельвинах temperature kindling - температура воспламенение temperature limiting - критическая температура temperature liquefaction - температура сжижения; температура размягчения (аморфного тела) temperature maximum -cycle - максимальная температура цикла temperature melt(ing) - температура (точка) плавления temperature moderate - средняя (умеренная) температура temperature normal - нормальная температура temperature normal running - нормальная эксплуатационная температура; нормальный режим температур temperature normal storage - нормальная температура хранения temperature operating - рабочая температура; температурный порог (пожарного извещателя) temperature ordinary room - нормальная комнатная температура outdoor - температура наружного воздуха. temperature outgassing - температура обезгаживания (дегазации) temperature outlet - температура на выходе; конечная температура temperature outside air - температура наружного воздуха temperature peak flame - высшая температура пламени temperature prepyrolysis - предпиролизная температура temperature probe - температура по прибору temperature propellant - (начальная) температура ракетного топлива temperature pyrolysis - температура пиролиза temperature pyrometric - пирометрическая температура temperature radiant (radiation) - температура радиации (излучения) temperature recombination - температура рекомбинации temperature recovery - температура восстановления temperature reduced - приведенная температура temperature refrigerant - температура хладагента temperature representative - характерная температура temperature resulting radiation - результирующая температура излучения temperature return - of water температура обратной воды temperature room - комнатная температура temperature running - рабочая (эксплуатационная) температура temperature salt - температура соляной ванны temperature saturation - температура насыщения (точки росы) temperature selfheating - температура самонагревания temperature selfignition - температура самовоспламенения temperature setting - температура схватывания или отверждения; экзотермия temperature shield - температура теплозащитной оболочки temperature skin - температура поверхностного слоя, поверхностная температура temperature smo(u)ldering - температура тления temperature softening - температура (точка) размягчения temperature spontaneous-ignition - температура самовоспламенения temperature stagnation - температура заторможенного потока temperature standard - температура воздуха в стандартной атмосфере; нормальная температура temperature steady-state - установившаяся температура temperature stream - температура потока temperature subambient - низкая (пониженная) температура (ниже комнатной) temperature sublimation - температура сублимации (возгонки) temperature substrate - температура подложки temperature subzero - температура ниже нуля, отрицательная температура temperature surface - температура поверхности temperature thermodynamic - термодинамическая температура temperature total - суммарная температура; полная температура (параметр торможения) temperature transient - нестационарная (неустановившаяся) температура temperature treatment - температура обработки temperature turbine-exit - температура газа на выходе из турбины temperature ultimate service - предельная эксплуатационная температура temperature vulcanization - температура вулканизации temperature wall - температура стенки temperature welding - температура сварки temperature wet-bulb - температура по смоченному термометру (психрометра) temperature working - рабочая температура temperature yield - температура текучести; температура растекаемости (пластмассы) temperature zero - нулевая температура, абсолютный нуль -
10 growth melt
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11 low-temperature melt
Англо-русский металлургический словарь > low-temperature melt
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12 low-temperature melt
Металлургия: плавление при низкой температуре -
13 thickness of the melt water layer corresponding to 1 grad. C of positive daily air temperature
Универсальный англо-русский словарь > thickness of the melt water layer corresponding to 1 grad. C of positive daily air temperature
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14 growth
1) рост; увеличение; развитие2) рост; выращивание (напр. кристалла)3) прирост; увеличение•growth by exsolution — рост посредством выпадения преципитатов, экстрактивный рост
growth by flux evaporation — выращивание методом испарения расплава;
growth by open-tube process — выращивание в проточной системе, выращивание методом открытой трубы;
growth by reversible reactions — выращивание методом обратимых реакций;
- growth of wavegrowth in open boat — выращивание в открытой лодочке, выращивание методом Чалмерса
- abnormal grain growth
- aqueous growth
- aqueous-solutlon growth
- arc-image growth
- boat growth
- cellular growth
- Chalmers' growth
- chemical reaction growth
- conservative crystal growth
- continuous grain growth
- controlled dendritic growth
- convection-limited growth
- crucibleless growth
- crystal growth
- crystal-pulling growth
- crystal-pushing growth
- Czochralski growth
- dendrite-ribbon growth
- dendrite-web growth
- dendritic growth
- diffusion-controlled growth
- diffusion-limited growth
- discontinuous grain growth
- domain growth
- electrochemical growth
- epitaxial growth
- epitaxial film growth
- epitaxial vacuum growth
- exaggerated grain growth
- facet growth
- fernlike growth
- flame-fusion growth
- flux growth
- fractal growth
- gaseous growth
- gaseous-phase growth
- gel growth
- grain growth
- heteroepitaxial growth
- high-temperature growth
- homoepitaxial growth
- hopper growth
- horizontal Bridgman-Stockbarger growth
- hydrothermal growth
- ingot growth
- irreversible growth
- isotropic growth
- Kruger-Finke growth
- Kyropoulos growth
- layer growth
- liquid-metal solvent growth
- liquid-phase growth
- logistic growth
- low-temperature growth
- melt growth
- molten-salt growth
- monocomponent growth
- multiwafer film growth
- nonconservative growth
- normal grain growth
- oriented growth
- oxide growth
- pedestal growth
- poly growth
- preferential growth
- pseudomorphic growth
- rate growth
- rheotaxial growth
- seeded growth
- selective growth
- sheet growth
- single-crystal growth
- solid-liquid growth
- solid-solid growth
- solutioh growth
- spherulitic growth
- spiral growth
- sublimation-condensation growth
- thermal growth
- thermal-gradient growth
- transport-limited growth
- unintentional growth
- vapor growth
- vapor-liquid-solid growth
- vapor-phase growth
- vapor-solid growth
- Verneuil growth
- vertical Bridgman-Stockbarger growth
- V-L-S growth
- whisker growth
- zero-gravity crystal growth -
15 method
метод; способ- method of moments
- method of spin-density functional
- access method
- aluminum resist method
- angle-lapping method
- aperture field method
- B-method
- balanced method
- basic direct access method
- basic sequential access method
- basic telecommunication access method
- batch method
- Bayesian methods
- box-diffusion method
- Box-Wilson method
- Bridgman method
- Bridgman-Stockbarger method
- bright-field method
- cavity method
- Chalmers method
- chemical-reaction method
- chemical vapor infiltration method
- Cochran-Orcutt method
- coherent-pulse method
- collocation method
- common access method
- compensation method
- conditional maximum likelihood method
- conjugate gradients method
- constant-temperature method
- contact method
- convex combination method
- critical path method
- crucibleless method
- crystal-pulling method
- cylinder method
- Czochralski method
- dark-field method
- decoupled method
- Delphi method
- deposition method
- derivate approximation method
- desiccant packing method
- destructive method
- differential-conductivity method
- differential Doppler method
- diffraction method
- diffused-collector method
- diffused-meltback method
- diffusion method
- direct method
- dispersion and mask method
- dispersion and mask template method
- distribution-free method
- dot-alloying method
- double-doping method
- double-exposure method
- dynamic bubble collapse method
- edge enhancement method
- electronic-recording method
- electron-lithography method
- electron-orbit method
- Engle-Granger method
- epitaxial-diffused method
- equisignal-zone method
- equivalent-current-sheet method
- estimation method
- etching method
- etch-pit method
- evaporation method
- event-driven method
- FDTD method
- field matching method
- filter method of single-sideband signals generation
- finite-difference method
- finite-difference time domain method
- finite-element method
- flame-fusion method
- flip-chip method
- floating-probe method
- floating-zone method
- four-point probe method
- frequency-domain method
- fusion method
- fuzzy method
- Galerkin's method
- Gauss-Newton method
- Gauss-Seidel method
- generalized method of moments
- generalized instrumental variables method
- geometrical optics method
- goal-driven method
- gradient method
- Green function method
- growth method
- heavy ball method
- heuristic method
- hierarchical direct access method
- hierarchical indexed direct access method
- hierarchical indexed sequential access method
- hierarchical sequential access method
- Horner method
- hot-probe method
- hypothetico-deductive method
- incomplete Choleski-decomposition method
- indexed sequential-access method
- indirect method
- induced electromotive force method
- induced EMF method
- induced magnetomotive force method
- induced MMF method
- insertion method
- in situ method
- instrumental variables method
- intaglio method
- intelligent decision support method
- interference method
- introspective method
- ion-drift method
- ion-implantation method
- isothermal method
- isothermal dipping method
- jack-knife method
- Jackson method
- Johansen method
- Kiefer-Wolfowitz method
- k-means method
- k-partan method
- Krüger-Finke method
- Kyropoulos method
- laborious method
- learning subspace method
- least distance method
- least-squares method
- Levenberg-Marquardt method
- lithographic method
- lobe switching method
- logistic method
- Marquardt method
- masking method
- matrix method
- maximum entropy method
- maximum likelihood method
- meltback method
- melt-freeze method
- melt-quench method
- memory operating characteristic method
- modified partan method
- molecular-field method
- Monte Carlo method
- morphological method
- Newton method
- Newton-Raphson method
- nodal method
- nondestructive method
- null method
- offset carrier method
- offset subcarrier method
- OLS method
- operations research method
- ordered elimination method
- ordinary least squares method
- orthogonalized plane wave method
- outer product of gradient method
- overcompensated method
- over-under probe method
- oxide resist method
- pair-exchange method
- partan method
- path compression method
- path-of-steepest-ascent method
- path sensitizing method
- pedestal method
- perturbation method
- phase-contrast method
- phase-plane method
- phasing method of single-sideband signals generation
- photoconductive decay method
- photolithographic method
- planographic method
- powder method
- principal components method
- probe method
- pseudopotential method
- queued access method
- queued indexed sequential access method
- queued sequential access method
- queued telecommunication access method
- random-walk method
- ray-optics method
- recalculation method
- receiver operating characteristic method
- recrystallization method
- rejection-mask method
- resonance method
- rotary-crystallizer method
- rotating crystal method
- roulette wheel method
- schlieren method
- scientific method
- sector method
- sequential-access method
- silk-screening method
- simplex method
- simulated annealing method
- skip-field method
- slow-cooling method
- solder-reflow method
- solid-state diffusion method
- speckle method
- spectral-domain method
- spray-processing method
- staining method
- state-space method
- static baycenter method
- stationary-phase method
- strain-annealed method
- sublimation-condensation method
- surface-potential equilibration method
- symbolic layout method
- symmetric displacement method
- temperature differential method
- temperature-variation method
- thermal-gradient method
- time-domain method
- Todama method
- traveling-solvent method
- trial-and-error method
- two-wattmeter method
- van der Pol method
- vapor-liquid-solid method
- variable-metric method
- vector-potential method
- Verneuil method
- vernier pulse-timing method
- virtual storage access method
- virtual telecommunications access method
- VLS method
- Warnier-Orr method
- wire-wrap method
- zero method -
16 growth
1) рост; увеличение; развитие2) рост; выращивание (напр. кристалла)3) прирост; увеличение•growth by exsolution — рост посредством выпадения преципитатов, экстрактивный рост
growth by open-tube process — выращивание в проточной системе, выращивание методом открытой трубы
- aqueous growthgrowth in open boat — выращивание в открытой лодочке, выращивание методом Чалмерса
- aqueous-solutlon growth
- arc-image growth
- boat growth
- cellular growth
- Chalmers' growth
- chemical reaction growth
- conservative crystal growth
- continuous grain growth
- controlled dendritic growth
- convection-limited growth
- crucibleless growth
- crystal growth
- crystal-pulling growth
- crystal-pushing growth
- Czochralski growth
- dendrite-ribbon growth
- dendrite-web growth
- dendritic growth
- diffusion-controlled growth
- diffusion-limited growth
- discontinuous grain growth
- domain growth
- electrochemical growth
- epitaxial film growth
- epitaxial growth
- epitaxial vacuum growth
- exaggerated grain growth
- facet growth
- fernlike growth
- flame-fusion growth
- flux growth
- fractal growth
- gaseous growth
- gaseous-phase growth
- gel growth
- grain growth
- growth of metastable phases
- growth of wave
- heteroepitaxial growth
- high-temperature growth
- homoepitaxial growth
- hopper growth
- horizontal Bridgman-Stockbarger growth
- hydrothermal growth
- ingot growth
- irreversible growth
- isotropic growth
- Kruger-Finke growth
- Kyropoulos growth
- layer growth
- liquid-metal solvent growth
- liquid-phase growth
- logistic growth
- low-temperature growth
- melt growth
- molten-salt growth
- monocomponent growth
- multiwafer film growth
- nonconservative growth
- normal grain growth
- oriented growth
- oxide growth
- pedestal growth
- poly growth
- preferential growth
- pseudomorphic growth
- rate growth
- rheotaxial growth
- seeded growth
- selective growth
- sheet growth
- single-crystal growth
- solid-liquid growth
- solid-solid growth
- solutioh growth
- spherulitic growth
- spiral growth
- sublimation-condensation growth
- thermal growth
- thermal-gradient growth
- transport-limited growth
- unintentional growth
- vapor growth
- vapor-liquid-solid growth
- vapor-phase growth
- vapor-solid growth
- Verneuil growth
- vertical Bridgman-Stockbarger growth
- V-L-S growth
- whisker growth
- zero-gravity crystal growthThe New English-Russian Dictionary of Radio-electronics > growth
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17 method
метод; способ- aluminum resist method
- angle-lapping method
- aperture field method
- balanced method
- basic direct access method
- basic sequential access method
- basic telecommunication access method
- batch method
- Bayesian methods
- B-method
- box-diffusion method
- Box-Wilson method
- Bridgman method
- Bridgman-Stockbarger method
- bright-field method
- cavity method
- Chalmers method
- chemical vapor infiltration method
- chemical-reaction method
- Cochran-Orcutt method
- coherent-pulse method
- collocation method
- common access method
- compensation method
- conditional maximum likelihood method
- conjugate gradients method
- constant-temperature method
- contact method
- convex combination method
- critical path method
- crucibleless method
- crystal-pulling method
- cylinder method
- Czochralski method
- dark-field method
- decoupled method
- Delphi method
- deposition method
- derivate approximation method
- desiccant packing method
- destructive method
- differential Doppler method
- differential-conductivity method
- diffraction method
- diffused-collector method
- diffused-meltback method
- diffusion method
- direct method
- dispersion and mask method
- dispersion and mask template method
- distribution-free method
- dot-alloying method
- double-doping method
- double-exposure method
- dynamic bubble collapse method
- edge enhancement method
- electronic-recording method
- electron-lithography method
- electron-orbit method
- Engle-Granger method
- epitaxial-diffused method
- equisignal-zone method
- equivalent-current-sheet method
- estimation method
- etching method
- etch-pit method
- evaporation method
- event-driven method
- FDTD method
- field matching method
- filter method of single-sideband signals generation
- finite-difference method
- finite-difference time domain method
- finite-element method
- flame-fusion method
- flip-chip method
- floating-probe method
- floating-zone method
- four-point probe method
- frequency-domain method
- fusion method
- fuzzy method
- Galerkin's method
- Gauss-Newton method
- Gauss-Seidel method
- generalized instrumental variables method
- generalized method of moments
- geometrical optics method
- goal-driven method
- gradient method
- Green function method
- growth method
- heavy ball method
- heuristic method
- hierarchical direct access method
- hierarchical indexed direct access method
- hierarchical indexed sequential access method
- hierarchical sequential access method
- Horner method
- hot-probe method
- hypothetico-deductive method
- in situ method
- incomplete Choleski-decomposition method
- indexed sequential-access method
- indirect method
- induced electromotive force method
- induced EMF method
- induced magnetomotive force method
- induced MMF method
- insertion method
- instrumental variables method
- intaglio method
- intelligent decision support method
- interference method
- introspective method
- ion-drift method
- ion-implantation method
- isothermal dipping method
- isothermal method
- jack-knife method
- Jackson method
- Johansen method
- Kiefer-Wolfowitz method
- k-means method
- k-partan method
- Krüger-Finke method
- Kyropoulos method
- laborious method
- learning subspace method
- least distance method
- least-squares method
- Levenberg-Marquardt method
- lithographic method
- lobe switching method
- logistic method
- Marquardt method
- masking method
- matrix method
- maximum entropy method
- maximum likelihood method
- meltback method
- melt-freeze method
- melt-quench method
- memory operating characteristic method
- method of edge waves
- method of moments
- method of spin-density functional
- modified partan method
- molecular-field method
- Monte Carlo method
- morphological method
- Newton method
- Newton-Raphson method
- nodal method
- nondestructive method
- null method
- offset carrier method
- offset subcarrier method
- OLS method
- operations research method
- ordered elimination method
- ordinary least squares method
- orthogonalized plane wave method
- outer product of gradient method
- overcompensated method
- over-under probe method
- oxide resist method
- pair-exchange method
- partan method
- path compression method
- path sensitizing method
- path-of-steepest-ascent method
- pedestal method
- perturbation method
- phase-contrast method
- phase-plane method
- phasing method of single-sideband signals generation
- photoconductive decay method
- photolithographic method
- planographic method
- powder method
- principal components method
- probe method
- pseudopotential method
- queued access method
- queued indexed sequential access method
- queued sequential access method
- queued telecommunication access method
- random-walk method
- ray-optics method
- recalculation method
- receiver operating characteristic method
- recrystallization method
- rejection-mask method
- resonance method
- rotary-crystallizer method
- rotating crystal method
- roulette wheel method
- schlieren method
- scientific method
- sector method
- sequential-access method
- silk-screening method
- simplex method
- simulated annealing method
- skip-field method
- slow-cooling method
- solder-reflow method
- solid-state diffusion method
- speckle method
- spectral-domain method
- spray-processing method
- staining method
- state-space method
- static baycenter method
- stationary-phase method
- strain-annealed method
- sublimation-condensation method
- surface-potential equilibration method
- symbolic layout method
- symmetric displacement method
- temperature differential method
- temperature-variation method
- thermal-gradient method
- time-domain method
- Todama method
- traveling-solvent method
- trial-and-error method
- two-wattmeter method
- van der Pol method
- vapor-liquid-solid method
- variable-metric method
- vector-potential method
- Verneuil method
- vernier pulse-timing method
- virtual storage access method
- virtual telecommunications access method
- VLS method
- Warnier-Orr method
- wire-wrap method
- zero methodThe New English-Russian Dictionary of Radio-electronics > method
-
18 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
-
19 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
-
20 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
См. также в других словарях:
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melt — v. & n. v. 1 intr. become liquefied by heat. 2 tr. change to a liquid condition by heat. 3 tr. (as molten adj.) (usu. of materials that require a great deal of heat to melt them) liquefied by heat (molten lava; molten lead). 4 a intr. & tr.… … Useful english dictionary
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