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1 current limiting device
токоограничивающее устройство
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[Интент]Тематики
EN
Англо-русский словарь нормативно-технической терминологии > current limiting device
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2 current limiting device
Техника: ограничитель потребляемого токаУниверсальный англо-русский словарь > current limiting device
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3 current-limiting device
Техника: токоограничивающее устройствоУниверсальный англо-русский словарь > current-limiting device
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4 fault-current limiting device
устройство ограничения токов КЗ
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[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
устройство ограничения токов КЗ при повреждениях
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[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]Тематики
- электротехника, основные понятия
EN
Англо-русский словарь нормативно-технической терминологии > fault-current limiting device
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5 discharge-current limiting device
Большой англо-русский и русско-английский словарь > discharge-current limiting device
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6 discharge-current limiting device
Англо-русский словарь технических терминов > discharge-current limiting device
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7 discharge-current limiting device
Техника: ограничитель тока разрядаУниверсальный англо-русский словарь > discharge-current limiting device
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8 fault-current limiting device
Универсальный англо-русский словарь > fault-current limiting device
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9 fault-current limiting device
Англо-русский словарь по электроэнергетике > fault-current limiting device
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10 device
1) устройство2) установка; агрегат3) аппарат4) механизм5) прибор; измерительное устройство7) компонент; элемент8) схема•devices identical in design — конструктивные аналоги;-
alphanumeric display device-
automatic exposure control device-
bubble memory device-
bucket brigade charge-coupled device-
decision-making device-
drilling bit feed device-
electrical device-
exposure control device-
Gunn-effect device-
Hall-effect device-
hard-copy output device-
household electrical device-
humidity detecting device-
hybrid-type device-
Josephson-effect device-
maneuvering propulsion device-
materials-handling device-
multiport device-
night observation device-
noise dampening device-
photoconducting device-
propulsion device-
protection device-
raster-display device-
registering pin device-
reversible film feeding device-
seed-feeding device-
supply reel braking device-
three-axis device -
11 device
приспособление; механизм; устройство; установка; прибор; аппарат (см. также apparatus, instrument, mechanism); элемент; компонент; метод; методика; процедура; способ; план; проект; схема; эмблема; амер. значок- device capacity - device class - device complexity - device control character - device control register - device control unit - device coordinates - device cycle - device directory - device docking - device driver - device error message - device executive - device for all-range centrifugal regulator correction - device ID - device independent - device integration - device operating failures - device queue - device resolution - device stability - device status condition - device under test - activation device - alarm device - anticrash device - AND device - anti-dazzling device - anticollision device - anticreep device - antidive device - antijamming device - antijoy ride device - antipumping device - antiroll device - antirotation device - assembly feed device - automatic arm locking device - automatic tracking device - bit rotation device - breakaway device - breakaway safety device - breakout device - bridge device - bridging device - built-in diagnostic device - bucket-tipping device - casing-rotating device - catch device - catching device - center-locating device - central control device - chain-stretching device - chain-type leveling device - levelling device - changeover device - character display device - charging device - checking device - chip control device - chip flushing device - choice device - chuck jaw-changing device - chuck jaw-forming device - chuck location device - chucking device - circular milling device - clearance device - clearing device - clever device - clutch antirotation device - clutch-operating device - code device - coded automatic reader device - cold-start device - compensating device - complete device - compliance device - compliant device - computer access device - conditioning device - constant hydrostatic head device - constant tension device - constant torque device - contact device - contact sealing device - continuously variable adjustment device - control device - control-monitor device - control device controlling device - controlled device - controlled handling device - controlling device - conveying-loading device - coolant transfer device - copying device - correcting device - crane device - cross rail clamping device - current-collecting device - custom's device - cutoff device - cut-out device - cutter angle testing device - cutter-checking device - cutter-trueing device - damping device - data storage device - data-setting device - deburring device - deep hole tapping device - defective device - delta-connected device - density device - depth-measuring device - differential device - differential speed reduction device - digital measuring device - dimension monitoring device - directed beam display device - discrete output device - disengaging device - disk-type leveling device - display device - distance-measuring device - diverting device - dividing device - dragging device - dressing device - drilling device - drive device - driven device - driving roller device - duplicating device - edging device - educational device - electric control device - electromechanical locking device in case of rope failure - electronic storage device - emergency cutoff device - emergency-knockoff device - emergency release device - emergency stop device - emission control device - emptying device - end device device - end-finishing device - end-machining device - end-of-arm tooling safety device - energy storage device - error-detection device - error-sensing device - escapement device - estimation device - etching device - executive device - expandable holding device - external diagnostic device - external read-in device - fail-active device - fail-passive device - fail-safe device - failure-detection device - failure-indicating device - failure-sensing device - fastening device - fault-isolation device - fault-locating device - feed control device - feeding device - fifth-wheel device - finger-type leveling device - finger-type levelling device - fixed length stroke device - fixing device - fixturing device - flaw-detecting device - flotation device - flow control device - flow-diverting device - fluid logic device - four-arm device - fuel-metering device - fuel run-out warning device - functional switching device - galvanic device - gas discharge device - gas-partitioning device - go-no-go device - grabbing device - graphic input device - gravitational separating device - gravity device - gripping device - guard device - guide device - Hall device - Hall-effect device - handling device - hard-wired command-and-control device - hauling device - height-measuring device - height setting-and-measuring device - helical milling device - high-pressure cleaning device - hoisting device - hold-down device - hold-off device - holding device - holding down device - hole-locating device - homing device - honing device - hooking device - hopper-type loading device - hydraulic releasing device - hydraulic retaining device - hydraulically actuated retaining device - ignition device - in-line device - in-process gaging device - in-process storage device - indexing device - indicating device - indicator device - inertial energy-storage device - information-processing device - input device - input-output device - inspection device - insulation monitoring device - interference detection device - interlock device - interlocking device - isolating device - jarring device - jaw shift device - jet device - joint device - knock-off device - labour-saving device - latching device - laying device - lift device - lift device with insulating arm - lifting device - limiting device - linear measuring device - load-handling device - load safety device - load-unload device - loading device - loading-unloading device - locating device - locking device - long lateral device - long normal device - low-frequency galvanic device - lubricating device - M-code device - machine retaining device - machine-dedicated device - machining device - magnetic holding device - magnetic medium input device - magnetic release device - magnetic testing device - magnetizing device - make-and-break device - manual input device - marking device - master device - master locating device - matching device - material-handling device - materials-handling device - measuring device - mechanical switching device - mechanical system diagnostic device - mending device - metering device - metrology room device - microautomatic device - microfocused device - micrometric displacement device - microspacing device - minimum-current release device - miter-cutting device - mixing device - monitoring device - monostable device - motion translation device - movement position device - muffling device - multichannel analyzer device - multidigit display device - multipallet automatic pallet-changing device - multipart clamping device - multiple switching device - multipoint measuring device - night viewing device - noise-attenuating device - noise-eliminating device - nondeteriorating device - nonsynchronous loading device - normal device - normal logging device - numerical control device - nut-locking device - off-line device - offloading device - offtake device - oiling device - oleodynamic device - on-line device - operating device - operation-performing device - optical reading device - optical scanning device - optoelectronic device - OR device - orienting device - origin-shift device - output device - oval turning device - overcurrent release device - overload-detecting device - overload device - overload prevention device - overload-protection device - overload release device - overload safety device - override-idle economy device - pallet load-unload device - pallet locating-and-clamping device - pallet shuttle device - pallet transfer device - pallet transport device - part handling-and-storage device - part-marking device - part present device - part presentation device - part probing device - partitioning device - pen-equipped device - peripheral recording device - permanent insulation monitoring device - personal protective device - photoelectric device - photoelectric semiconductor device - photosensitive device - pick device - pick-and-place device - pickup device - pipe collapsing device - pipe-cutting device - pipe hoisting device - pipe makeup and breakout automatic device - pipe-shearing device - pipe stabber device - pit level device - plotting device - plug-in device - plugging device - pointer device - pointer-type device - pointing device - poligon-cutting device - polyphase device - polyphase electrical device - porosity-estimating device - porosity-sensitive device - position control device - positioning device - power-assisted clamping device - power chucking device - preselector device - presence sensing device - pressure abnormal fall detecting device - pressure-difference device - pressure fall preventing device - pressure-sensing device - primary device - printing device - probe control device - probe-changing device - probing device - process-monitoring device - profiling device - program transfer device - programmable device - programmable wheel trueing device - projection optical device - propulsion device - propulsive device - protecting device - protective device - puller device - pulling device - pushing device - radial stretching device - radius planing device - radius trueing device - rail-clamping device - rail-setting device - ratchet device - ratcheting device - reading device - readout device - ready-not-ready device - reclosing device - recognition device - recording device - redundancy device - redundant device - regulating device - regulator device - relay device - releasing device - relief device - relieving device - remote maintenance device - repairable device - resetting device - resistivity measuring device - resolver position measuring device - rest device - restraint device - retaining device - retrieval device - return spring device - reverse-current release device - reverse-thrust device - reversing device - right-angle orientating device - robot device - robot-like device - robot load-unload device - robot part-handling device - robotic device - robotic inspection device - robotic loading device - rocking device - roll feed device - rotary machining device - rotary power-torque device - rotating device - sand-spraying device - safety device - safety alarm device - safety control device - safety interlock device - safety locking device - safety slipping device - sampling device - scanning device - scraping device - screening device - screw copying device - screw locking device - sealing device - search device - searching device - securing device - seed-feeding device - sowing device - seed-sowing device - self-balancing device - self-diagnosis device - self-gripping device - self-healing device - self-leveling device - self-levelling device - self-reacting device - self-repair device - semiautomatic device - semiconductor device - semiconductor display device - semiconductor power device - semiconductor switching device - sending device - sensing device - sensing-switching device - sensor device - separation device - serial device - setting device - shaker device - shearing device - short normal device - short-time memory device - shut-down device - shut-off device - shuting-off device - sighting device - signal device - signaling device - single-lever locking device - single-phase device - single-phase electrical device - single-pole switching device - sizing device - skew-compensating device - slitter device - slowing-down device - smart device - smart power device - snap-action switching device - sonic device - sound emitting device - special machine retaining device - speed reduction device - speed-limit device - speed-limiting device - speed-sensing device - spindle-keylock device - spindle-keylocking device - spinning device - spiral milling device - split clamping device - spooling device - spraying device - spreading device - spring balancing device - squelch device - stall warning device - star-connected device - starting device - static switching device - steadying device - steering device - stirring device - stocking device - stop device - stopper-rod device - stopping device - storage device - stretching device - strip-off device - stroke device - surface-mounted device - swing arm device - swirling device - switch device - switching device - switch-type sensing device - switching-off device - table-tilting device - tactile sensing device - take-up device - taper-turning device - tapping device - tea-leaf harvesting device - picking device - telechiric device - telemetering device - tensioner device - tensioning device - testing device - thermal release device - thermoelectric device - three-axis sensing device - three-dimensional sensing device - three-linear axis device - thrust-vectoring device - tightening device - tilting device - time-cycling device - time-delay device - tipping device - tool-changing device - tool-checking device - tool feed control device - tool-guiding device - tool life control device - tool-loading device - tool-pregaging device - tool-presetting device - tool-setting device - tool storage device - toolholder-changing device - toolholding device - torque release device - tracing device - transfer device - trip-free mechanical switching device - tripping device - trouble-location device - trouble-shooting device - trueing device - trunnion device - tube end finishing device - tube-cutting device - tube-trimming device - turnaround device - turnover device - twin-pallet rotating device - two-axis sensing device - ultrasonic proximity device - universal machine retaining device - upsetting device - unwinding device - variable gain device - variable speed device - vector-measuring device - visible light emission device - warning device - washing device - water suction device - waveguide protection device - wear-sensing device - weighting device - wheel-trueing device - withdrawing device - work recognition device - work rest device - work-staging device - work transfer device - workhandling device - workholding device - workpiece holddown device - workpiece-sensing device - workpiece support device - worm-type leveling device - zero-resetting device - zero-setting device -
12 device
1) устройство
2) прибор
3) приспособление
4) аппарат
5) орган
6) орудие
7) механизм
– adjusting device
– alarm device
– analog device
– analogue device
– antijamming device
– antiskid device
– arc control device
– artificial device
– ash sluicing device
– ash-sluicing device
– azimuthal device
– batching device
– calling device
– catching device
– charge-coupled device
– charging device
– checking device
– clamping device
– coding device
– coding device
– computing device
– covering device
– cryoelectronic device
– damping device
– device coordinates
– digital device
– distance-measuring device
– distribution device
– electronic device
– encryption device
– etching device
– fail-safe device
– feeding device
– fifth-wheel device
– gas-discharge device
– gas-filled device
– height-measuring device
– height-warning device
– high-lift device
– hoisting device
– input device
– input-output device
– input/output device
– jet device
– levelling device
– loading device
– locking device
– louver-damper device
– magnetizing device
– matching device
– measuring device
– metering device
– microautomatic device
– microphone-earphone device
– mixing device
– nonreciprocal device
– optoelectron device
– origin-shift device
– output device
– peripheral device
– pointing device
– pressure-difference device
– primary device
– protection device
– protective device
– puller device
– pushing device
– put-down device
– ray-locking device
– reclosing device
– regulator device
– safely device
– safety device
– sealing device
– self-reacting device
– semiautomatic device
– semiconductor device
– sensing device
– separation device
– shaker device
– shearing device
– shorting device
– sighting device
– signal device
– signaling device
– signalling device
– sound-imaging device
– speed-limiting device
– spinning device
– spraying device
– spreading device
– squelch device
– starting device
– stopper-rod device
– stopping device
– surface-mounted device
– surface-mounted device
– swirling device
– switching device
– tape-moving device
– telechiric device
– telemetering device
– telephone device
– tensioning device
– test device
– testing device
– through-hole device
– thrust-vectoring device
– tripping device
– turn-over device
– unwinding device
– upsetting device
automatic tracking device — <comput.> устройство сопровождения автоматическое
finger-type levelling device — пальчатый выравнивающий аппарат
graphic device interface — интерфейс графического устройства
hybrid protection device — гибридное СВЧ защитное устройство
package of a semiconductor device — корпус полупроводникового прибора
star tracking device — <astr.> астроориентатор
telephone switching device — телефонное коммутационное устройство
terminal of a semiconductor device — вывод полупроводникового прибора
waveguide protection device — волноводное защитное устройство
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13 device
1) устройство; механизм; приспособление2) прибор; аппарат3) установка, агрегат• -
14 limiting value of the non-operating current in case of unbalanced load in a multiphase circuit
- предельное значение тока несрабатывания при неравномерной нагрузке в многофазной цепи
предельное значение тока несрабатывания при неравномерной нагрузке в многофазной цепи
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[IEV number 442-05-63]EN
limiting value of the non-operating current in case of unbalanced load in a multiphase circuit
Maximum value of current which, in the absence of any fault to frame or to earth, and of an earth leakage current, can flow in a circuit containing only two active conductors of the installation, without causing operation of the part of the residual current device performing the evaluation.
[IEV number 442-05-63]FR
valeur limite du courant de non-fonctionnement en service déséquilibré dans un circuit polyphasé
Valeur maximale du courant pouvant circuler, en l'absence de tout défaut à la masse ou à la terre et de tout courant de fuite à la terre, dans un circuit intéressant seulement deux conducteurs actifs de l'installation sans provoquer le fonctionnement de la partie du dispositif de coupure différentiel assurant la fonction mesure.
[IEV number 442-05-63]EN
- limiting value of the non-operating current in case of unbalanced load in a multiphase circuit
DE
- Grenzwert der Nichtbetätigungs-Überstromstärke bei unsymmetrischen Lasten in einem Mehrphasen-Stromkreis
FR
- valeur limite du courant de non-fonctionnement en service déséquilibré dans un circuit polyphasé
Англо-русский словарь нормативно-технической терминологии > limiting value of the non-operating current in case of unbalanced load in a multiphase circuit
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15 limiting value of the non-operating current in case of balanced load
предельное значение тока несрабатывания при равномерной нагрузке
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[IEV number 442-05-64]EN
limiting value of the non-operating current in case of balanced load
Maximum value of current which, in the absence of any fault to frame or to earth, and of an earth leakage current, can flow in a circuit without any load unbalance, without causing operation of the part of the residual current device performing the evaluation.
[IEV number 442-05-64]FR
valeur limite du courant de non-fonctionnement en service équilibré
Valeur maximale du courant pouvant circuler dans un circuit, en l'absence de tout défaut à la masse ou à la terre et de tout courant de fuite à la terre en l'absence de tout déséquilibre de charge, sans provoquer le fonctionnement de la partie du dispositif de coupure différentiel assurant la fonction mesure.
[IEV number 442-05-64]EN
DE
FR
Англо-русский словарь нормативно-технической терминологии > limiting value of the non-operating current in case of balanced load
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16 limiting non-actuating time
предельное время неотключения
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[IEV number 442-05-23]EN
limiting non-actuating time
maximum delay during which a value of residual current higher than the residual non-operating current can be applied to the residual current device without bringing it actually to operate
[IEV number 442-05-23]FR
temps limite de non-réponse
temps maximal pendant lequel on peut appliquer au dispositif de coupure différentiel une valeur du courant différentiel supérieure à la valeur du courant différentiel de non-fonctionnement, sans provoquer son fonctionnement effectif
[IEV number 442-05-23]Тематики
- электротехника, основные понятия
EN
DE
FR
3.3.11 предельное время неотключения (limiting non-actuating time): Максимальный промежуток времени, в течение которого дифференциальный отключающий ток, приложенный к УЗО, не вызывает его срабатывания.
Источник: ГОСТ Р МЭК 60755-2012: Общие требования к защитным устройствам, управляемым дифференциальным (остаточным) током оригинал документа
Англо-русский словарь нормативно-технической терминологии > limiting non-actuating time
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17 limiting value of the operating voltage of the auxiliary source
- предельное наименьшее значение рабочего напряжения вспомогательного источника питания
предельное наименьшее значение рабочего напряжения вспомогательного источника питания
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[IEV number 442-05-33]EN
limiting value of the operating voltage of the auxiliary source
minimum value of the voltage of the auxiliary source, at which the residual current device still operates under specified conditions in the case of decreasing voltage of the auxiliary source
[IEV number 442-05-33]FR
valeur limite de la tension de fonctionnement de la source auxiliaire
valeur minimale de la tension de la source auxiliaire pour laquelle le dispositif de coupure différentiel fonctionne encore dans des conditions spécifiées en cas de diminution de la tension de la source auxiliaire
[IEV number 442-05-33]Тематики
EN
DE
FR
Англо-русский словарь нормативно-технической терминологии > limiting value of the operating voltage of the auxiliary source
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18 conditional short-circuit current (of a circuit or a switching device)
условный ток короткого замыкания (в цепи или коммутационном аппарате)
Ожидаемый ток, который цепь или коммутационнный аппарат, защищенные установленным устройством от коротких замыканий, способны удовлетворительно выдерживать в течение всего времени срабатывания этого устройства в указанных условиях эксплуатации и поведения.
Примечания
1 В настоящем стандарте устройством для защиты от коротких замыканий служит, как правило, автоматический выключатель или плавкие предохранители.
2 Это определение отличается от МЭК 60050(441-17-20) расширением понятия токоограничивающего аппарата до устройства для защиты от коротких замыканий, функция которого не сводится только к токоограничению.
[ ГОСТ Р 50030. 1-2000 ( МЭК 60947-1-99)]EN
conditional short-circuit current (of a circuit or a switching device)
the prospective current that a circuit or a switching device, protected by a specified current limiting device, can satisfactorily withstand for the operating time of that current limiting device under specified conditions of use and behaviour
[IEV number 441-17-20]FR
courant de court-circuit conditionnel (d'un circuit ou d'un appareil de connexion)
courant présumé qu'un circuit ou un appareil de connexion, protégé par un dispositif limiteur de courant spécifié, peut supporter de façon satisfaisante pendant la durée de fonctionnement de cet appareil limiteur de courant dans des conditions spécifiées d'emploi et de comportement
[IEV number 441-17-20]Тематики
- выключатель автоматический
- выключатель, переключатель
- предохранитель
- электротехника, основные понятия
EN
DE
FR
- courant de court-circuit conditionnel (d'un circuit ou d'un appareil de connexion)
Англо-русский словарь нормативно-технической терминологии > conditional short-circuit current (of a circuit or a switching device)
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19 assembly equipped with devices limiting internal arc effects
НКУ с устройствами ограничения воздействия внутренней дуги
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[Интент]Параллельные тексты EN-RU
Assemblies equipped with devices limiting internal arc effects (active protection)
A design philosophy which is completely different from that just considered consists in guaranteeing the resistance to internal arcing by installing devices limiting the arc.
The approaches in that direction can be of two different types:
• limiting the destructive effects of the arc, once it has occured, by means of arc detectors
• limiting the destructive effects of the arc, once it has occured, by means of overpressure detectors.
The first possibility consists in installing in the assembly arc detectors which sense the light flux associated with the electric arc phenomenon.
Once the arc has been detected, these devices send an opening signal to the incoming circuit-breaker, thus guaranteeing tripping times of the order of 1-2 ms, therefore shorter than those proper of the circuit-breaker.
The operating logic of an arc detector is the following: the occurrence of an arc inside the switchboard is detected by the arc detector because an intense light radiation is associated with this phenomenon.
The arcing control system detects the event and sends a tripping signal to the circuit-breaker.
All the above with trip times of a few milliseconds and supplanting the tripping of the CB overcurrent relay which, for example, could be delayed due to current selectivity questions.
Figure 1 shows the possible positions where this device can be installed inside a switchboard.
The ideal solution is that which provides the installation of at least one detector for each column, with the consequent reduction to a minimum of the length of the optical fibers carrying the signal.
In order to prevent from an unwanted tripping caused by light sources indepent of the arc (lamps, solar radiation etc.), an additional current sensor is often positioned at the incoming of the main circuit-breaker.
Only in the event of an arc, both the incoming sensor which detects an “anomalous” current due to the arc fault as well as the sensor detecting the light radiation as sociated with the arc enable the system to intervene and allow the consequent opening of the circuit-breaker.
The second possibility consists in installing overpressure sensors inside the switchboard.
As previously described, the overpressure wave is one of the other effects occurring inside an assembly in case of arcing.
As a consequence it is possible to install some pressure sensors which are able to signal the pressure peak associated with the arc ignition with a delay of about 10-15 ms.
The signal operates on the supply circuit-breaker without waiting for the trip times of the selectivity protections to elapse, which are necessarily longer.
Such a system does not need any electronic processing device, since it acts directly on the tripping coil of the supply circuit-breaker.
Obviously it is essential that the device is set at fixed trip thresholds.
When an established internal overpressure is reached, the arc detector intervenes.
However, it is not easy to define in advance the value of overpressure generated by an arc fault inside a switchboard.
[ABB]НКУ с устройствами ограничения воздействия внутренней дуги (активная защита)
Для решения этой задачи используются совершенно другие, отличающиеся от ранее рассмотренных, принципы, заключающиеся в том, что противодействие внутренней дуге обеспечивается применением устройств, ограничивающих саму дугу.
Существует два типа решения проблемы в этом направлении:
• ограничение разрушающего воздействия дуги после того, как ее обнаружат специальные устройства
• ограничение разрушающего воздействия дуги после того, как специальные устройства обнаружат возникновение избыточного давления.
В первом случае в НКУ устанавливают устройства обнаружения дуги, реагирующие на световой поток, сопровождающий явление электрической дуги.
При обнаружении дуги данные устройства посылают сигнал управления на размыкание вводного автоматического выключателя. Гарантируемое время реакции составляет 1-2 мс, что меньше времени срабатывания автоматического выключателя.
Логика работы устройства обнаружения дуги следующая: Дуга, возникшая внутри НКУ, обнаруживается датчиком, реагирующим на интенсивное световое излучение, которым сопровождается горение дуги.
Обнаружив дугу, система управления посылает сигнал автоматическому выключателю.
Время срабатывания датчика и системы управления составляет несколько миллисекунд, что меньше времени срабатывания автоматического выключателя, осуществляющего защиту от сверхтока, который обычно для обеспечения требуемой селективности срабатывает с задержкой.
На рис. 1 показаны места возможной установки устройства защиты внутри НКУ.
Идеальным решением является установка, по крайней мере, одного устройства защиты в каждый шкаф многошкафного НКУ.
Это позволит до минимума сократить длину оптоволоконных кабелей передачи сигнала.
Для предотвращения ложного срабатывания от других источников света (т. е. не от дуги), например, таких как лампы, солнечное излучение и т. п., дополнительно в главной цепи вводного автоматического выключателя устанавливают датчик тока.
Только при наличии двух событий, а именно: срабатывания датчика света и обнаружения аномального увеличения тока, система управления считает, что возникла электрическая дуга и подает команду на отключение вводного автоматического выключателя.
Второе решение заключается в установке внутри НКУ датчика избыточного давления.
Как было описано ранее, одним из характерных проявлений электрической дуги, возникшей внутри НКУ, является ударная волна.
Это означает, что можно установить несколько датчиков давления, задачей которых является обнаружение импульса давления (с задержкой 10…15 мс), обусловленного зажиганием дуги.
Сигнал от датчиков давления поступает на вводной автоматический выключатель, который срабатывает без задержки на обеспечение селективности.
Такая система не нуждается в электронном устройстве обработки информации, поскольку воздействует непосредственно на независимый расцепитель автоматического выключателя.
Вполне понятно, что такое устройство имеет фиксированный порог срабатывания.
Датчик-реле дуги сработает, как только будет достигнуто заданное значение избыточного давления.
Следует иметь в виду, что не так легко заранее определить значение избыточного давления, которое будет создано при зажигании дуги внутри НКУ.
[Перевод Интент]Тематики
- НКУ (шкафы, пульты,...)
EN
Англо-русский словарь нормативно-технической терминологии > assembly equipped with devices limiting internal arc effects
-
20 time-delay residual current device
устройство дифференциального тока с выдержкой времени
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[IEV number 442-05-05]EN
time-delay residual current device
residual current device specially designed to attain a predetermined value of limiting non-actuating time, corresponding to a given value of residual current
[IEV number 442-05-05]FR
dispositif différentiel temporisé
dispositif de coupure différentiel spécialement conçu pour obtenir une valeur prédéterminée du temps limite de non-réponse correspondant à une valeur donnée du courant différentiel
[IEV number 442-05-05]Тематики
- аппарат, изделие, устройство...
- электроустановки
Обобщающие термины
EN
DE
FR
3.3.12 УЗО с выдержкой времени (time-delay residual current device): УЗО, специально предназначенное для обеспечения заранее установленного значения предельного времени неотключения, соответствующего данному значению дифференциального тока.
Источник: ГОСТ Р МЭК 60755-2012: Общие требования к защитным устройствам, управляемым дифференциальным (остаточным) током оригинал документа
Англо-русский словарь нормативно-технической терминологии > time-delay residual current device
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