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1 maximum allowable limit
предельно допустимый уровень (загрязнения)
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[А.С.Гольдберг. Англо-русский энергетический словарь. 2006 г.]Тематики
EN
Англо-русский словарь нормативно-технической терминологии > maximum allowable limit
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2 maximum allowable limit
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3 maximum allowable limit
1) Техника: максимально допустимый уровень2) Экология: предельно допустимый уровень, максимально допустимый уровень (MAL; МДУ)Универсальный англо-русский словарь > maximum allowable limit
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4 limit
1) предел; граница; порог || устанавливать предел; ограничивать2) габарит3) допуск4) мн. ч. интервал значений•limit from the left — предел слева;limit from the right — предел справа;to exceed forward center of gravity limit — возд. превышать переднюю максимально допустимую центровку;to fall within clearance limits — вписываться в габарит;to pass to the limit — переходить к пределуlimit of drilling mud temperature stability — предельная (теоретическая) термостойкость бурового раствораlimit of "in" — предел втягивания ( руки робота)limit of "out" — предел выдвижения ( руки робота)limit of plasticity — предел пластичности, граница раскатывания ( глинистых грунтов)limit of proportionality — сопр. предел пропорциональностиlimit of superheat — предельный перегрев ( при вскипании жидкости)limit of "swing" — предел качания ( руки робота)-
age limit
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allowable time limit
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alternating bending stress fatigue limit
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audibility limit
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axleload limit
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backfire limit
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bilateral limit
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breaking limit
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burning limit
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check-in time limit
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clearance limit
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combustion limit
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condemning limit
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confidence limit
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constraint limit
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conventional endurance limit
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corrosion endurance limit
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creep limit
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cross-wind limit
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damming limit
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design limits
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detection limit
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dimension limit
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discharge limits
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elastic limit
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endurance limit
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estimated limit
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expected destruction limit
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explosive limits
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exposure limit
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extension limit
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fatigue limit
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fetch limit
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fiducial limit
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fire limits
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fixed stop limit
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flame initiation limit
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flashback limit
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flyover noise limit
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force power limit
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glass-forming limit
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grade limit
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gradeability limit
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high stop warning limit
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high torque limit
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highest torque limit
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hydraulic valve operating limit
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ice limit
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ignition limit
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improper limit
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inflammability limit
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interlocking limit
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keeping limit
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kinetic limit
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lean limit
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liquid limit
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load limit
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long-wavelength limit
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long-wave limit
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low stop limit
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low torque warning limit
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lower explosive limit
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lower frequency limit
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lower limit
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lowest torque limit
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machine overload limit
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magnetic limit
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maximum concentration limit
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maximum permissible limit
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measurement limits
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negative deviation limit
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neutron dose limit
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noise exposure limit
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normal operation limits
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operating temperature limit
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operation time limit
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page limit
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pedal travel limit
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permissible limit
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physical limits
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plastic limit
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positive deviation limit
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power system stability limit
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predetermined maximum limit
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prescribed limit
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preset limit
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preset size limit
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processing limits
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programmable limit
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proportional limit
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rate limit
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rated limit
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reaction limit
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rebuild limit
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reject limit
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release limit
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resolution limit
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response limit
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restricting speed limit
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robot's load limit
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saturation limit
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semiautomatically selected limit
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service limit
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Shannon limit
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short-wavelength limit
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short-wave limit
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smoke limit
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solubility limit
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speed limit
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station limit
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steady-state stability limit
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stress limit
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switching limit
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tensile yield limit
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tension-and-compression fatigue limit
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thermal cracking limit
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threshold concentration limit
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tightening limit
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time-current zone limits
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tolerance limit
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torque limit
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torque power limit
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torsional endurance limit
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towing speed limit
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transient stability limit
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travel limit
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tripping limit
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ultimate stress limit
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upper elevation limit
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upper frequency limit
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upper limit
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voltage-temperature limits
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warning limit
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wear limit
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yard limit -
5 limit
1) предел; предельное количество; ограничение || ограничивать; задавать предел, задавать пределы || предельный; граничный2) допуск; предельный размер3) ограничитель; конечный выключатель•- acceleration limitwithin the tolerance limits — в допустимых размерных пределах; в пределах допусков
- acceptable limit of safety factor
- action limits
- alignment limits
- allowable limits
- average outgoing quality limit
- bending endurance limit
- confidence limit
- constraint limit
- control limits
- creep limit
- creeping limit
- detection limit
- double software limit
- down limit
- elastic limit
- electric limit
- emergency shutdown limit
- emission limit
- end-of-travel limit
- endurance limit
- EOT limit
- error limit
- fatigue endurance limit
- fatigue limit
- fault limits
- fixed stop limit
- force/torque/power limit
- grading limit
- innermost limit
- laser-annealing-induced solubility limit
- legibility limit
- limit of accuracy
- limit of action
- limit of effective range
- limit of endurance
- limit of size
- limit of tolerance
- limits of error
- limits of interference
- limits of reach
- lower limit
- machine overload limit
- maximum limit of size
- maximum material limit
- memory capacity limit
- minimum limit of size
- minimum material limit
- outermost limit
- pitting limit
- predetermined limit
- predetermined maximum limit
- preprogrammed limit
- prescribed limit
- preset limit
- preset size limit
- programmable limit
- proportional elastic limit
- proportional limit
- proportionality limit
- rate limit
- resolution limit
- returning limit
- robot's load limit
- saturation limit
- scoring limit
- search limits
- semiautomatically selected limit
- set limit
- setting limit
- software limit
- software stroke limits
- speed limit
- stability limit
- stress limit
- stroke limit
- surface endurance limit
- tight limit
- tolerable limit
- tolerance limit
- travel limit
- up limit
- upper limit
- VB limit
- warning limit
- wear limit
- working limit
- yield limitEnglish-Russian dictionary of mechanical engineering and automation > limit
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6 maximum
1. n максимум; максимальное значение; высшая степень2. n астр. момент максимальной яркости звезды или её величина в это время; звёздный максимум3. a максимальныйmaximum search — поиск максимума; поиск максимального числа
Синонимический ряд:1. supreme (adj.) foremost; greatest; highest; maximal; optimum; outside; paramount; supreme; top; topmost; utmost2. limit (noun) apex; ceiling; climax; crest; culmination; height; limit; limitation; peak; pinnacle; summit; top; ultimate; utmostАнтонимический ряд: -
7 limit
age limitпредельный срок службыaircraft limit switchконцевой выключатель в системе воздушного суднаallowable time limitдопустимый предел наработкиatmospheric limitsатмосферные ограниченияcenter-of-gravity limitпредел центровкиcheck-in time limitвремя окончания регистрацииclearance limitграница действия разрешенияcoverage limitзона действияcross-wind limitограничение по боковому ветруdesigned stress limitпредел допустимых расчетных перегрузокdown-lock limit switchконцевой выключатель замка выпущенного положения(шасси) endurance limitдопустимый предел выносливостиengine limit governorрегулятор предельных оборотов двигателяfatigue limitпредел усталостиflyover noise limitдопустимый предел шума при полетеforward limitпревышать переднюю максимально допустимую центровкуgap limit gageкалибр - скобаglide slope limit lineлиния ограничения отклонения от глиссадыlimit advisoryконсультативное сообщение об ограниченияхlimit bank warning unitблок сигнализации предельного кренаlimit flight timeограничивать полетное времяlimiting range of massпредел ограничения массыlimit loadпредельная нагрузкаlimit operating loadпредельная эксплуатационная нагрузкаlimit speed switchсигнализатор достижения предельной скоростиlimit switchконцевой выключательlimit switch actuating pinшток концевого выключателяlimit switch assemblyблок концевых выключателейlower limitнижняя границаmaximum limit speedмаксимально допустимая скоростьmaximum speed limiting systemсистема ограничения максимальных оборотовno limitsбез ограниченийobstacle clearance limitминимальная высота пролета препятствийoperation time limitмаксимально допустимое время работыoverspeed limiting controlузел ограничения заброса оборотовpitch limit systemсистема ограничения шага(воздушного винта) plug limit gageкалибр-пробкаrudder limiting systemсистема ограничения отклонения руля направленияrudder limit stop actuatorмеханизм ограничения отклонения руля направленияstability limitпредел устойчивостиstress limitпредел нагрузкиtable of limitsтаблица ограниченийtemperature limit switchсигнализатор ограничения температурыtime limitограничение по времениun-lock limit switchконцевой выключатель замка убранного положения(шасси) upper age limitверхний возрастной пределupper limitверхняя границаvisibility limitпредел видимостиwind limitпредел скорости ветра -
8 MAL
maximum allowable limit - максимально допустимый уровень -
9 MAL
1) Медицина: максимально допустимый уровень (maximal allowable limit)2) Техника: maximum allowable limit3) Юридический термин: Member at Large5) Физиология: Malignant, Mouth And Lips6) Глоссарий компании Сахалин Энерджи: maximum allowable level7) Программирование: Mips Assembly Language8) Автоматика: multipurpose assembly language9) Яхтенный спорт: Малазия (Обозначения на парусах) -
10 Mal
1) Медицина: максимально допустимый уровень (maximal allowable limit)2) Техника: maximum allowable limit3) Юридический термин: Member at Large5) Физиология: Malignant, Mouth And Lips6) Глоссарий компании Сахалин Энерджи: maximum allowable level7) Программирование: Mips Assembly Language8) Автоматика: multipurpose assembly language9) Яхтенный спорт: Малазия (Обозначения на парусах) -
11 mal
1) Медицина: максимально допустимый уровень (maximal allowable limit)2) Техника: maximum allowable limit3) Юридический термин: Member at Large5) Физиология: Malignant, Mouth And Lips6) Глоссарий компании Сахалин Энерджи: maximum allowable level7) Программирование: Mips Assembly Language8) Автоматика: multipurpose assembly language9) Яхтенный спорт: Малазия (Обозначения на парусах) -
12 предельно допустимая концентрация
Большой англо-русский и русско-английский словарь > предельно допустимая концентрация
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13 предельно допустимая концентрация
maximum allowable concentration, maximum permissible concentration, ( вредного вещества) maximum concentration limitАнгло-русский словарь технических терминов > предельно допустимая концентрация
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14 stress
1) (механическое) напряжение; напряжённое состояние; условное напряжение2) нагрузка, усилие3) гидроудар4) воздействие5) нагрузка на единицу площади, интенсивность нагрузки, удельная нагрузка•- actual stress - admissible stress - advancing load stress - allowable stress - alternate stress - applied stress - arch stress - axial stress - bar stress - basic stress - bearing stress - belt stresses - bending stress - blow stress - bond stress - braking stress - breaking stress - calculated stress - chord stress - circular symmetrical stress - combined stress - completely reversed stresses - complex stress - compressive stress - compressive stress in bending - concrete stress - constant stress - cooling stress - couple stress - crack stress - crackforming stress - crippling stress - critical stress - critical compressive stress - cross-bending stress - cyclical stresses - dead stress - dead-load stress - design stress - direct stress - discontinuity stress - downward stress - dynamic stress - ecological stress - edge stress - effective stress - elastic stress - engineering stress - erection stress - external stress - fabrication stress - failing stress - fatigue stress - fatigue limit stress - fibre stress - final stress - flexural stress - floor stress - fluctuating stresses - friction-induced stress - functional stress - gravity stress - ground stress - handling stress - heat stress - hoist stresses - hoop stress - horizontal stress - impact stress - indirect stress - induced stress - inherent stresses - initial stress - intermediate stress - internal stress - jacking stress - lateral stress - limiting maximum stress - linear stress - live load stress - load stress - local stresses - locked-up stresses - longitudinal stress - mechanical stress - net stress - neutral stress - normal stress - operating stress - operational stress - permissible stress - plane stress - point-load stress - primary stress - principal stresses - proof stress - radial stress - reinforcement stresses - relaxation of stresses - repeated stresses - residual stress - reverse stress - rupture stress - safe stress - secondary stress - shearing stress - shock stress - simple stress - snow load stress - specific stress - static stress - subsidiary stress - surface stress - sustained stress - sway stress - tangential stress - temperature stress - tensile stress - thermal stress - thermal stress on structure - three-dimensional stress - time-dependant stress - torsional stress - total stress - transverse stress - true stress - twisting stress - ultimate stress - uniaxial stress - unit stress - unsafe stress - varying stress - vibratory stress - volumetric stress - water stress - wave stress - welding stress - wheel-load stress - wind stress - working stress - yield stress - yield point stressstress due to prestress — усилие ( в бетоне), вызванное предварительным напряжением
* * *1. (внутреннее) усилие, внутренняя сила2. (механическое) напряжение3. нагрузка на единицу площади, интенсивность нагрузки, удельная нагрузкаstress acting away from the joint — усилие ( в элементе фермы), действующее от узла
stresses arising from bending and axial loading — напряжения, возникающие от поперечного изгиба и действия продольных сил
stress constant across the section — напряжение, постоянное по всему сечению
stress due to prestress — усилие обжатия бетона; напряжение в бетоне, вызванное обжатием
stresses due to wind forces — напряжения от сил ветра, напряжения от ветровой нагрузки
stresses induced by loads — напряжения, вызванные нагрузкой [нагружением] ( в отличие от температурных напряжений)
stress in reinforcement — напряжение [усилие] в арматуре
stresses in truss components [in truss members] — усилия в стержнях [элементах фермы]
stress resolved into two components — напряжение, разложенное на две составляющие
stress varying from point to point — напряжение, меняющееся от точки к точке ( сечения элемента)
- actual stressstresses with the elastic limit — напряжения, не превышающие предела упругости; напряжения в упругой области
- additional stress
- allowable stress
- allowable unit stress
- alternate stress
- anchorage bond stress
- average stress
- axial stress
- bar stress
- bearing unit stress
- bearing stress
- belt stress
- bending stress
- bending failure stress
- biaxial stress
- blow stress
- bond stress
- bottom-chord stress
- boundary stress
- breaking stress
- buckling stress
- calculated stress
- circumferential unit stress
- circumferential stress
- combined stresses
- combined bearing, bending, and shear stresses
- combined shear and bending stress
- compression stress
- compressive stress in bending
- concentrated-load stress
- constant stress
- crack-inducing stress
- crippling stress
- critical stress
- crushing stress
- cycle stress
- dead load stress
- design stress
- development bond stress
- deviation stress
- deviator stress
- direct stress
- drying shrinkage stresses
- dynamic stress
- edge stress
- effective stress
- equivalent stress
- erection stress
- extreme fiber stress
- extreme stress
- failure stress
- fatigue stress
- fiber stress
- final stress
- flexible stress
- floor stress during operation
- floor stress when climbing
- flow stress
- fluctuating stresses
- fracture stress
- freezing stresses
- gravity stress
- handling stresses
- high localized stresses
- hoop stress
- hydrostatic stress
- ideal main stress
- impact stresses
- initial stresses
- intergranular stress
- intermediate principal stress
- jacking stress
- larger principal stress
- limiting stresses permitted in the standard
- linearly varying stresses
- live-load stress
- local stresses
- local bond stress
- longitudinal stress
- main stress
- maximum stress
- maximum allowable stress
- maximum shearing stress
- mean stress
- mean cycle stress
- mean fatigue stress
- membrane stresses
- meridian stress
- negative normal stress
- neutral stress
- normal stress
- octahedral normal stress
- octahedral shear stress
- peak stress
- permissible stress
- plate stresses
- point-load stress
- positive normal stress
- primary stress
- principal stresses
- principal tensile stress
- proof stress
- proof stress at 0.2 percent set
- pulsating stress
- radial stress
- radial shearing stress
- reduced main stress
- reinforcement stress
- repeated stress
- residual stress
- reversed stress
- rupture stress
- safe stress
- secondary stresses
- service stress
- settlement stresses
- shear stress
- shear stresses on oblique planes
- shear buckling stress
- shearing stress
- shrinkage-related stress
- shrinkage stress
- smaller principal stress
- spherical stress
- splitting tensile stress
- static stress
- surface stress
- tangential stress
- temperature stress
- temporary stress
- tensile stress
- tensile stress due to bending
- thermal stress
- timber stresses
- time-dependent stress
- top-chord stress
- torsional stress
- total stress
- transverse bending stress in flange
- true stress
- truss stresses
- truss stresses determined by method of sections
- twisting stress
- ultimate stress
- ultimate shear stress
- ultimate tensile stress
- unit stress
- unit stress produced by design loads
- unrelieved stress
- working stress
- yield stress -
15 stress
- stress
- n1. (внутреннее) усилие, внутренняя сила
2. (механическое) напряжение
3. нагрузка на единицу площади, интенсивность нагрузки, удельная нагрузка
stress acting away from the joint — усилие ( в элементе фермы), действующее от узла
stresses arising from bending and axial loading — напряжения, возникающие от поперечного изгиба и действия продольных сил
stress constant across the section — напряжение, постоянное по всему сечению
stress due to prestress — усилие обжатия бетона; напряжение в бетоне, вызванное обжатием
stresses due to wind forces — напряжения от сил ветра, напряжения от ветровой нагрузки
stresses induced by loads — напряжения, вызванные нагрузкой [нагружением] ( в отличие от температурных напряжений)
stress in reinforcement — напряжение [усилие] в арматуре
stresses in truss components [in truss members] — усилия в стержнях [элементах фермы]
stress resolved into two components — напряжение, разложенное на две составляющие
stress varying from point to point — напряжение, меняющееся от точки к точке ( сечения элемента)
stresses with the elastic limit — напряжения, не превышающие предела упругости; напряжения в упругой области
- actual stress
- additional stress
- allowable stress
- allowable unit stress
- alternate stress
- anchorage bond stress
- average stress
- axial stress
- bar stress
- bearing unit stress
- bearing stress
- belt stress
- bending stress
- bending failure stress
- biaxial stress
- blow stress
- bond stress
- bottom-chord stress
- boundary stress
- breaking stress
- buckling stress
- calculated stress
- circumferential unit stress
- circumferential stress
- combined stresses
- combined bearing, bending, and shear stresses
- combined shear and bending stress
- compression stress
- compressive stress in bending
- concentrated-load stress
- constant stress
- crack-inducing stress
- crippling stress
- critical stress
- crushing stress
- cycle stress
- dead load stress
- design stress
- development bond stress
- deviation stress
- deviator stress
- direct stress
- drying shrinkage stresses
- dynamic stress
- edge stress
- effective stress
- equivalent stress
- erection stress
- extreme fiber stress
- extreme stress
- failure stress
- fatigue stress
- fiber stress
- final stress
- flexible stress
- floor stress during operation
- floor stress when climbing
- flow stress
- fluctuating stresses
- fracture stress
- freezing stresses
- gravity stress
- handling stresses
- high localized stresses
- hoop stress
- hydrostatic stress
- ideal main stress
- impact stresses
- initial stresses
- intergranular stress
- intermediate principal stress
- jacking stress
- larger principal stress
- limiting stresses permitted in the standard
- linearly varying stresses
- live-load stress
- local stresses
- local bond stress
- longitudinal stress
- main stress
- maximum stress
- maximum allowable stress
- maximum shearing stress
- mean stress
- mean cycle stress
- mean fatigue stress
- membrane stresses
- meridian stress
- negative normal stress
- neutral stress
- normal stress
- octahedral normal stress
- octahedral shear stress
- peak stress
- permissible stress
- plate stresses
- point-load stress
- positive normal stress
- primary stress
- principal stresses
- principal tensile stress
- proof stress
- proof stress at 0.2 percent set
- pulsating stress
- radial stress
- radial shearing stress
- reduced main stress
- reinforcement stress
- repeated stress
- residual stress
- reversed stress
- rupture stress
- safe stress
- secondary stresses
- service stress
- settlement stresses
- shear stress
- shear stresses on oblique planes
- shear buckling stress
- shearing stress
- shrinkage-related stress
- shrinkage stress
- smaller principal stress
- spherical stress
- splitting tensile stress
- static stress
- surface stress
- tangential stress
- temperature stress
- temporary stress
- tensile stress
- tensile stress due to bending
- thermal stress
- timber stresses
- time-dependent stress
- top-chord stress
- torsional stress
- total stress
- transverse bending stress in flange
- true stress
- truss stresses
- truss stresses determined by method of sections
- twisting stress
- ultimate stress
- ultimate shear stress
- ultimate tensile stress
- unit stress
- unit stress produced by design loads
- unrelieved stress
- working stress
- yield stress
Англо-русский строительный словарь. — М.: Русский Язык. С.Н.Корчемкина, С.К.Кашкина, С.В.Курбатова. 1995.
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16 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
-
17 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
-
18 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
-
19 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
-
20 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
См. также в других словарях:
maximum allowable concentration — didžiausioji leidžiamoji koncentracija statusas T sritis ekologija ir aplinkotyra apibrėžtis Rodiklis cheminių medžiagų kenksmingumui žmonių darbo ir gyvenamosios vietos aplinkoje apibūdinti – didžiausia vienkartinė arba paros vidutinė cheminio… … Ekologijos terminų aiškinamasis žodynas
maximum allowable error — didžiausia leidžiamoji paklaida statusas T sritis Standartizacija ir metrologija apibrėžtis Matavimo priemonės paklaidos norma, kurią nustato metrologijos taisyklės arba gamintojas. Didžiausia leidžiamoji paklaida rodo priemonės tikslumą.… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
maximum allowable error — didžiausioji leidžiamoji paklaida statusas T sritis fizika atitikmenys: angl. limit of error; maximum allowable error vok. Fehlergrenze, f rus. предельно допустимая погрешность, f pranc. erreur maximale permise, f; erreur maximale tolérée, f … Fizikos terminų žodynas
maximum permissible concentration — didžiausioji leidžiamoji koncentracija statusas T sritis ekologija ir aplinkotyra apibrėžtis Rodiklis cheminių medžiagų kenksmingumui žmonių darbo ir gyvenamosios vietos aplinkoje apibūdinti – didžiausia vienkartinė arba paros vidutinė cheminio… … Ekologijos terminų aiškinamasis žodynas
limit of error — didžiausia leidžiamoji paklaida statusas T sritis Standartizacija ir metrologija apibrėžtis Matavimo priemonės paklaidos norma, kurią nustato metrologijos taisyklės arba gamintojas. Didžiausia leidžiamoji paklaida rodo priemonės tikslumą.… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
limit of error — didžiausioji leidžiamoji paklaida statusas T sritis fizika atitikmenys: angl. limit of error; maximum allowable error vok. Fehlergrenze, f rus. предельно допустимая погрешность, f pranc. erreur maximale permise, f; erreur maximale tolérée, f … Fizikos terminų žodynas
maximum — maximumly, adv. /mak seuh meuhm/, n., pl. maximums, maxima / meuh/, adj. n. 1. the greatest quantity or amount possible, assignable, allowable, etc. 2. the highest amount, value, or degree attained or recorded. 3. an upper limit allowed or… … Universalium
limit — {{Roman}}I.{{/Roman}} noun ADJECTIVE ▪ outer ▪ northern, southern, etc. ▪ three mile, etc. ▪ city … Collocations dictionary
maximum — noun (plural maxima or maximums) Etymology: Latin, neuter of maximus biggest more at maxim Date: 1740 1. a. the greatest quantity or value attainable or attained b. the period of highest, greatest, or utmost development 2. an upper limit allowed… … New Collegiate Dictionary
maximum — The greatest amount, value, or degree attained or attainable. [L. neuter of maximus, greatest] glucose transport m. the maximal rate of reabsorption of glucose from the glomerular filtrate; it amounts to approximately 320 mg/min in humans.… … Medical dictionary
limit — A boundary or end. [L. limes, boundary] critical l. the upper or lower boundary of a laboratory test result that indicates a life threatening value. elastic l. the greatest stress to which a material may be subjected and still be capable of… … Medical dictionary
