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1 основы военно-инженерного дела
Military: basic field engineeringУниверсальный русско-английский словарь > основы военно-инженерного дела
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2 основное поле
1) Engineering: main field2) Mathematics: base field, basic field, gross field, ground field3) Information technology: master field -
3 полевой оригинал
1) Engineering: base sheet (карты), basic plate (карты), field sheet (карты), field survey sheet (карты), survey plate (карты), surveying panel (карты), surveyor's plate (карты)2) Cartography: compilation base, compilation sheet, field document (карты), field map, master sheet, survey plat, survey sheet, topographic manuscript, topographical manuscript -
4 относиться к
. все, кого это касается; к ним относится; касаться; не относящийся к; охватывать; падать на; равным образом; распространяться на; справедлив для; это особенно относится к случаям, когда когда•Evidently Einstein's restriction should not apply to this wave.
•The laboratory rules are concerned with noncritical operations.
•The following rules of centrifugal machines hold true for all centrifugal pumps.
•Henry's Law refers only to the effect of pressure.
•Faraday's laws relate to the electrolysis of solutions and fused salts.
•The term "computer-aided engineering" refers to a "total" system concept, in which...
•The result is only appropriate for a finite time interval which is undetermined as yet.
•The above example pertains to the diffusion of liquids.
•The result applies (or refers, or relates) to mass transfer from plate to fluid, or fluid to plate.
•The book deals with (or treats on) distillation.
•Another question has to do with diseases arising from dietary deficiencies.
•This will be true for (or of) very high electric fields.
•Lines la and 2a apply to a 47-microfarad, 35-volt polar capacitor.
•The term caisson covers a wide range of foundation structures.
•Similar considerations hold for emitting molecules.
•This is particularly true in humid regions.
•These properties are not pertinent to the problem at hand.
•This is especially the case with wide armature cores.
•The differences are a matter of degree rather than of type.
•These terms are related to certain atomic groupings.
•The discoveries concern the properties of electric charges.
•This discussion has so far concerned itself with the experimental results obtained.
•The common names isobutane and isopentane apply to those isomers having...
•The third factor concerns the bulky nature of...
•The most significant developments of that period centred around the field of communications.
II•The basic principle of the device dates from (or back to) the 15th century.
•The first trials go back to 1912.
•These mummies are dated to 2800 B.C.
•Most abrasive materials fall in the region at the top of the scale.
•All the above forces fall in(to) this category.
•All forms of anemia fall into two main types.
•The discussion of pseudovectors belongs to the domain of the tensor calculus.
IV•Mathematical biophysics stands in the same relation to experimental biology as mathematical physics to experimental physics.
Русско-английский научно-технический словарь переводчика > относиться к
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5 опорная сеть
1) Military: (топогеодези-ческая) control net, control network2) Engineering: basic network (метеорологических станций)3) Construction: photo control, photo control (на аэроснимках)4) Topography: ground control, horizontal control5) Information technology: backbone, backbone network6) Astronautics: field control, survey control7) Geophysics: reference( gravity standardization) network8) Network technologies: core network (Cisco)9) Oceanography: fundamental net, fundamental network -
6 НКУ с защитой от воздействия электрической дуги
- internal arc-proof switchgear and controlgear assemblу
- arc-resistant switchgear
- arc-proof switchgear
- arc-proof switchboard
- arc-proof low voltage switchgear and controlgear assembly
НКУ с защитой от воздействия электрической дуги
комплектное устройство с защитой от электрической дуги
низковольтное комплектное устройство с защитой от электрической дуги
НКУ распределения и управления с защитой от электрической дуги
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[Интент]EN
arc-resistant switchgear
A type of switchgear design which is designed to withstand the effects of an internal arcing fault, without causing harm to personnel who are located in defined areas. It is not intended to withstand these internal arcing fault without possibly causing physical damage to the structure and/or components, but often the physical damage is less with an arc-resistant design.
There are three classes of protection:
Type A - eliminates the emission of gases and particles from the front of the switchgear during an internal arcing fault,
Type B - eliminates the emission of gases and particles from the front and sides of the switchgear during an internal arcing fault,
Type C - eliminates the emission of gases and particles from the front and sides of the switchgear, from between compartments within the same cell, and between adjacent cells during an internal arcing fault.
Arc-resistant switchgear has traditionally been metal-clad, but the basic concept could also be applied to other types of switchgear as well.
arc-proof switchgear
An incorrect term. Please refer to arc-resistant switchgear
[Schneider Electric]
[ http://electrical-engineering-portal.com/glossary-of-medium-voltage-switchgear-terms]Параллельные тексты EN-RU
If the electric arc occurs inside LV switchgear it generates internal overpressures and results in local overheatings which may cause high mechanical and thermal stresses in the equipment.
Besides, the involved materials can generate hot decomposition products, gases or fumes, which, due to the overpressure, are almost always ejected to the outside of the enclosure thus jeopardizing the operator safety.
The European Directive 2006/95/EC states the fundamental safety requirements for low voltage electric materials (from 50 V to 1000 V in alternating current, from 75 V to 1500 V in continuos current) to be put on the market within the European Community.
Among the essential safety requirements defined by this Directive particular importance is given to the need of taking technical measures to prevent “temperature rises, electric arcs or radiations which may result in hazards” from occurring.
This aspect has always been highly considered for apparatus, but it has been wrongly neglected for electrical switchgear and only in the last 10-15 years it has been catching on both at Italian as well as at international level.
Safety for the operator and for the installation in case of arcing inside LV switchgear can be obtained through three different design philosophies:
1. assemblies mechanically capable of withstanding the electric arc (passive protection)
2. assemblies equipped with devices limiting the effects of internal arcing (active protection)
3. assemblies equipped with current limiting circuitbreakers.
These three solutions (also combined together) have found a remakable development in the industrial field and have been successfully applied by the main manufacturers of LV switchgear and controlgear assemblies.
As it can be seen hereafter by examining the first two solutions, an “active” protection against arc faults is intrinsecally more complex than a “passive” one.
This because of the presence of additional electromechanical/ electronic devices5 which limit the arcing effects and which, by their nature, may be subject to faults or not-tripping.
[ABB]Дуга, возникшая внутри НКУ, создает внутреннее избыточное давление и вызывает локальный перегрев, что может привести к воздействию на оборудование значительного механического напряжения и перепада температур.
Кроме того, под воздействием дуги различные материалы разлагаются на продукты, имеющие высокую температуру, в том числе газы и дым, которые почти всегда вырываются из оболочки НКУ под высоким давлением, подвергая опасности оперативный персонал.
Европейская директива 2006/95/EC определяет основные требования безопасности для низковольтного (от 50 до 1000 В переменного тока и от 75 до 1500 В постоянного тока) оборудования поставляемого на рынок Европейского Сообщества.
Одно из основных требований безопасности, определяемое данной директивой как наиболее важное, заключается в необходимости предпринять технические меры для предотвращения "подъема температуры, возникновения электрической дуги или излучения", которые могут причинить ущерб.
Данная проблема всегда учитывалась при создании различных аппаратов, но незаслуженно игнорировалась при разработке электрических комплектных устройств, и только в последние 10-15 лет ей стали уделять должное внимание как в Италии, так и во всем мире.
При возникновении электрической дуги внутри НКУ безопасность оператора и электроустановки обеспечивается тремя способами:
1. Конструкция НКУ должна выдерживать механические воздействия, возникающие при горении электрической дуги (пассивная защита).
2. НКУ должно быть оснащено устройствами, ограничивающими воздействие электрической дуги (активная защита)
3. НКУ должны быть оснащены токоограничивающими автоматическими выключателями.
Указанные три способа (применяемые совместно) получили дальнейшее развитие в промышленности и успешно применяются основными изготовителями НКУ распределения и управления.
Как будет показано далее при рассмотрении первых двух способов, активная защита от дуговых» неисправностей является более сложной, чем пассивная защита.
Это объясняется необходимостью использования дополнительных электромеханических или электронных устройств, задачей которых является ограничение воздействий дуги и которые сами могут оказаться неисправными и не сработать.
[Перевод Интент]Тематики
- НКУ (шкафы, пульты,...)
Синонимы
- комплектное устройство с защитой от электрической дуги
- низковольтное комплектное устройство с защитой от электрической дуги
- НКУ распределения и управления с защитой от электрической дуги
EN
Русско-английский словарь нормативно-технической терминологии > НКУ с защитой от воздействия электрической дуги
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