as+are

1) gener. a (100 ûâ. ì)

2) eng. a

 

низковольтное устройство распределения и управления (НКУ)
Низковольтные коммутационные аппараты и устройства управления, измерения, сигнализации, защиты, регулирования, собранные совместно, со всеми внутренними электрическими и механическими соединениями и конструктивными элементами.
[ ГОСТ Р МЭК 61439-1-2012]

низковольтное устройство распределения и управления
Комбинация низковольтных коммутационных аппаратов с устройствами управления, измерения, сигнализации, защиты, регулирования и т. п., полностью смонтированных изготовителем НКУ (под его ответственность на единой конструктивной основе) со всеми внутренними электрическими и механическими соединениями с соответствующими конструктивными элементами
Примечания
1. В настоящем стандарте сокращение НКУ используют для обозначения низковольтных комплектных устройств распределения и управления.
2. Аппараты, входящие в состав НКУ, могут быть электромеханическими или электронными.
3. По различным причинам, например по условиям транспортирования или изготовления, некоторые операции сборки могут быть выполнены на месте установки, вне предприятия-изготовителя.
[ ГОСТ Р 51321. 1-2000 ( МЭК 60439-1-92)]

EN

power switchgear and controlgear assembly (PSC-assembly)
low-voltage switchgear and controlgear assembly used to distribute and control energy for all types of loads, intended for industrial, commercial and similar applications where operation by ordinary persons is not intended
[IEC 61439-2, ed. 1.0 (2009-01)]

low-voltage switchgear and controlgear assembly
combination of one or more low-voltage switching devices together with associated control, measuring, signalling, protective, regulation equipment, etc., completely assembled under the responsibility of the manufacturer with all the internal electrical and mechanical interconnections and structural parts.
[IEC 61892-3, ed. 2.0 (2007-11)]

switchgear and controlgear
a general term covering switching devices and their combination with associated control, measuring, protective and regulating equipment, also assemblies of such devices and equipment with associated interconnections, accessories, enclosures and supporting structures
[IEV number 441-11-01]

switchgear and controlgear
electric equipment intended to be connected to an electric circuit for the purpose of carrying out one or more of the following functions: protection, control, isolation, switching
NOTE – The French and English terms can be considered as equivalent in most cases. However, the French term has a broader meaning than the English term and includes for example connecting devices, plugs and socket-outlets, etc. In English, these latter devices are known as accessories.
[IEV number 826-16-03 ]

switchboard
A large single electric control panel, frame, or assembly of panels on which are mounted (either on the back or on the face, or both) switches, overcurrent and other protective devices, buses, and usually instruments; not intended for installation in a cabinet but may be completely enclosed in metal; usually is accessible from both the front and rear.
[ McGraw-Hill Dictionary of Architecture & Construction]

switchboard
One or more panels accommodating control switches, indicators, and other apparatus for operating electric circuits
[ The American Heritage Dictionary of the English Language]

FR

ensemble d'appareillage de puissance (ensemble PSC)
ensemble d'appareillage à basse tension utilisé pour répartir et commander l'énergie pour tous les types de charges et prévu pour des applications industrielles, commerciales et analogues dans lesquelles l'exploitation par des personnes ordinaires n'est pas prévue
[IEC 61439-2, ed. 1.0 (2009-01)]

appareillage, m
matériel électrique destiné à être relié à un circuit électrique en vue d'assurer une ou plusieurs des fonctions suivantes: protection, commande, sectionnement, connexion
NOTE – Les termes français et anglais peuvent être considérés comme équivalents dans la plupart des cas. Toutefois, le terme français couvre un domaine plus étendu que le terme anglais, et comprend notamment les dispositifs de connexion, les prises de courant, etc. En anglais, ces derniers sont dénommés "accessories".
[IEV number 826-16-03 ]

appareillage
terme général applicable aux appareils de connexion et à leur combinaison avec des appareils de commande, de mesure, de protection et de réglage qui leur sont associés, ainsi qu'aux ensembles de tels appareils avec les connexions, les accessoires, les enveloppes et les charpentes correspondantes
[IEV number 441-11-01]

A switchboard as defined in the National Electrical Code is a large single panel, frame, or assembly of panels on which are mounted, on the face or back or both switches, overcurrent and other protective devices, buses, and, usually, instruments.
Switchboards are generally accessible from the rear as well as from the front and are not intended to be installed in cabinets.
The types of switchboards, classified by basic features of construction, are as follows:
1. Live-front vertical panels
2. Dead-front boards
3. Safety enclosed boards( metal-clad)

[American electricians’ handbook]

---

Параллельные тексты EN-RU

The switchboard plays an essential role in the availability of electric power, while meeting the needs of personal and property safety.

Its definition, design and installation are based on precise rules; there is no place for improvisation.

The IEC 61439 standard aims to better define " low-voltage switchgear and controlgear assemblies", ensuring that the specified performances are reached.

It specifies in particular:

> the responsibilities of each player, distinguishing those of the original equipment manufacturer - the organization that performed the original design and associated verification of an assembly in accordance with the standard, and of the assembly manufacturer - the organization taking responsibility for the finished assembly;

> the design and verification rules, constituting a benchmark for product certification.

All the component parts of the electrical switchboard are concerned by the IEC 61439 standard.

Equipment produced in accordance with the requirements of this switchboard standard ensures the safety and reliability of the installation.

A switchboard must comply with the requirements of standard IEC 61439-1 and 2 to guarantee the safety and reliability of the installation.

Managers of installations, fully aware of the professional and legal liabilities weighing on their company and on themselves, demand a high level of safety for the electrical installation.

What is more, the serious economic consequences of prolonged halts in production mean that the electrical switchboard must provide excellent continuity of service, whatever the operating conditions.

[Schneider Electric]

НКУ играет главную роль в обеспечении электроэнергией, удовлетворяя при этом всем требованиям по безопасности людей и сохранности имущества.

Выбор конструкции, проектирование и монтаж основаны на чётких правилах, не допускающих никакой импровизации.

Требования к низковольтным комплектным устройствам распределения и управления сформулированы в стандарте МЭК 61439 (ГОСТ Р 51321. 1-2000).

В частности, он определяет:

> распределение ответственности между изготовителем НКУ - организацией, разработавшей конструкцию НКУ и проверившей его на соответствие требованиям стандарта, и сборщиком – организацией, выполнившей сборку НКУ;

> конструкцию, технические характеристики, виды и методы испытаний НКУ.

В стандарте МЭК 61439 (ГОСТ Р 51321. 1-2000) описываются все компоненты НКУ.

Оборудование, изготовленное в соответствии с требованиями этого стандарта, обеспечивает безопасность и надежность электроустановки.

Для того чтобы гарантировать безопасность эксплуатации и надежность работы электроустановки, распределительный щит должен соответствовать требованиям стандарта МЭК 61439-1 и 2.

Лица, ответственные за электроустановки, должны быть полностью осведомлены о профессиональной и юридической ответственности, возложенной на их компанию и на них лично, за обеспечение высокого уровня безопасности эксплуатации этих электроустановок.

Кроме того, поскольку длительные перерывы производства приводят к серьезным экономическим последствиям, электрический распределительный щит должен обеспечивать надежную и бесперебойную работу независимо от условий эксплуатации.

[Перевод Интент]

 

LV switchgear assemblies are undoubtedly the components of the electric installation more subject to the direct intervention of personnel (operations, maintenance, etc.) and for this reason users demand from them higher and higher safety requirements.

The compliance of an assembly with the state of the art and therefore, presumptively, with the relevant technical Standard, cannot be based only on the fact that the components which constitute it comply with the state of the art and therefore, at least presumptively, with the relevant technical standards.

In other words, the whole assembly must be designed, built and tested in compliance with the state of the art.

Since the assemblies under consideration are low voltage equipment, their rated voltage shall not exceed 1000 Va.c. or 1500 Vd.c. As regards currents, neither upper nor lower limits are provided in the application field of this Standard.

The Standard IEC 60439-1 states the construction, safety and maintenance requirements for low voltage switchgear and controlgear assemblies, without dealing with the functional aspects which remain a competence of the designer of the plant for which the assembly is intended.

[ABB]

Низковольтные комплектные устройства (НКУ), вне всякого сомнения, являются частями электроустановок, которые наиболее подвержены непосредственному вмешательству оперативного, обслуживающего и т. п. персонала. Вот почему требования потребителей к безопасности НКУ становятся все выше и выше.

Соответствие НКУ современному положению дел и вследствие этого, гипотетически, соответствующим техническим стандартам, не может основываться только на том факте, что составляющие НКУ компоненты соответствуют современному состоянию дел и поэтому, по крайней мере, гипотетически, - соответствующим техническим стандартам

Другими словами, НКУ должно быть разработано, изготовлено и испытано в соответствии с современными требованиями.

Мы рассматриваем низковольтные комплектные устройства и это означает, что их номинальное напряжение не превышает 1000 В переменного тока или 1500 В постоянного тока. Что касается тока, то ни верхнее, ни нижнее значение стандартами, относящимися к данной области, не оговариваются

Стандарт МЭК 60439-1 устанавливает требования к конструкции, безопасности и техническому обслуживанию низковольтных комплектных устройств без учета их функций, полагая, что функции НКУ являются компетенцией проектировщиков электроустановки, частью которых эти НКУ являются.

[Перевод Интент]

Тематики

• НКУ (шкафы, пульты,...)

Классификация

>>>

Действия

• изготовление НКУ
• испытание НКУ
• подключение НКУ
• проектирование НКУ

Синонимы

• низковольтное комплектное устройство
• низковольтное устройство распределения и управления
• НКУ

Сопутствующие термины

• изготовитель НКУ

EN

• assembly
• electrical switchboard
• low voltage controlgear and assembly
• low voltage switchboard
• low voltage switchgear and controlgear assembly
• low-voltage switchgear and controlgear assembly
• LV switchgear and controlgear assembly
• LV switchgear assembly
• panel
• power switchgear and controlgear assembly
• PSC-assembly
• switchboard
• switchgear and controlgear
• switchgear/controlgear

DE

• Schaltanlagen und/oder Schaltgeräte

FR

• appareillage
• ensemble d'appareillage de puissance
• ensemble PSC

 

полихлорированный бифенил
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

polychlorinated biphenyl
PCBs are a family of chemical compounds which do not exist in nature but which are man-made. Commercial mixtures are clear, pale yellow liquids, manufactured by the replacement of hydrogen atoms on the biphenyl molecule by chlorine. Because of their physical properties, PCBs are commonly found in electrical equipment which requires dielectric fluid such as power transformers and capacitors, as well as in hydraulic machinery, vacuum pumps, compressors and heat-exchanger fluids. Other uses include: lubricants, fluorescent light ballasts, paints, glues, waxes, carbonless copy paper, inks including newspapers, dust-control agents for dirt roads, solvents for spreading insecticides, cutting oils. PCBs are stable compounds and although they are no longer manufactured they are extremely persistent and remain in huge quantities in the atmosphere and in landfill sites. They are not water-soluble and float on the surface of water where they are eaten by aquatic animals and so enter the food chain. PCBs are fat-soluble, and are therefore easy to take into the system, but difficult to excrete. (Source: PZ / PHC)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• polychlorinated biphenyl

DE

• Polychlorbiphenyl

FR

• polychlorobiphényle

 

травы
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

grass
A very large and widespread family of Monocotyledoneae, with more than 10.000 species, most of which are herbaceous, but a few are woody. The stems are jointed, the long, narrow leaves originating at the nodes. The flowers are inconspicuous, with a much reduced perianth, and are wind-pollinated or cleistogamous. The fruit in single-seeded, usually a caryopsis. Grasses are the most important of all plants for food. (Source: ALL)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• grass

DE

• Gras

FR

• herbe

 

использование теплотворной способности
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

utilisation of calorific value
Calorific value is the heat per unit mass produced by complete combustion of a given substance. Calorific values are used to express the energy values of fuels; usually these are expressed in megajoules per kilogram. They are also used to measure the energy content of foodstuffs; i.e. the energy produced when the food is oxidized in the body. The units here are kilojoules per gram. Calorific values are measured using a bomb calorimeter (apparatus consisting of a strong container in which the sample is sealed with excess oxygen and ignited electrically. The heat of combustion at constant volume can be calculated from the resulting rise in temperature). (Source: DICCHE)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• utilisation of calorific value

DE

• Brennwertnutzung

FR

• utlisation du pouvoir calorifique

 

 

масляный трансформатор
Трансформатор с жидким диэлектриком, в котором основной изолирующей средой и теплоносителем служит трансформаторное масло
[ ГОСТ 16110-82]

---

масляный трансформатор
Трансформатор, магнитная система и обмотки которого погружены в масло
(МЭС 421-01-14)
[ ГОСТ 30830-2002]

EN

oil-immersed type transformer
a transformer of which the magnetic circuit and windings are immersed in oi
[IEV number 421-01-14]

FR

transformateur immergé dans l'huile
transformateur dont le circuit magnétique et les enroulements sont immergés dans l'huile
[IEV number 421-01-14]

Oil transformers
The magnetic circuit and the windings are immersed in a liquid dielectric that provides insulation and evacuates the heat losses of the transformer.
This liquid expands according to the load and the ambient temperature. PCBs and TCBs are now prohibited and mineral oil is generally used. It is flammable and requires protective measures against the risks of fire, explosion and pollution.

The most commonly used protective measures are the DGPT or the DGPT2: Gas, Pressure and Temperature sensor with 1 or 2 sensing levels on the temperature. This system cuts off the LV load (1st level) then the HV supply (2nd level) when there is a fault inside the transformer. A holding tank is used to recover all the liquid dielectric.

Of the four types of immersed transformer: free breathing transformers, gas cushion transformers, transformers with expansion tank and transformers with integral filling, only the latter are currently installed.
[Legrand]

Масляные трансформаторы
Магнитная система и обмотки трансформатора погружены в жидкий диэлектрик, служащий изоляцией и теплоносителем.
Жидкий диэлектрик изменяет свой объем в соответствии с нагрузкой трансформатора и температурой окружающей среды. Поскольку в настоящее время применение полихлорированных дифенилов и тетрахлорбифенилов запрещено, то в основном используют минеральное масло. Оно огнеопасно, поэтому необходимо принимать меры против возникновения пожара, взрыва и загрязнения окружающей среды.

Как правило, применяются системы DGPT (одноуровневые системы, использующие датчики газа, давления и температуры) или DGPT2 – двухуровневые системы. В случае возникновения аномального состояния трансформатора данные системы отключают нагрузку цепей низшего напряжения (первый уровень защиты), а затем питание обмотки высшего напряжения (второй уровень защиты). Активная часть трансформатора находится в баке и полностью покрыта жидким диэлектриком.

Существует четыре типа масляных трансформаторов: трансформаторы с системой свободного дыхания, трансформаторы с газовой подушкой между зеркалом масла и крышкой трансформатора, трансформаторы с расширительным баком и трансформаторы с гофрированным баком. В настоящее время применяют только трансформаторы последнего типа
[Интент]

[http://www.ramo-chelny.ru/konschasti.html]

Масляный трансформатор:

1. Шихтованный магнитопровод
2. Обмотка низшего напряжения
3. Обмотка высшего напряжения
4. Трубчатый бак
5. Термометр
6. Переключатель регулировочных отводов обмотки высшего напряжения
7. Ввод (проходной изолятор) обмотки низшего напряжения
8. Ввод (проходной изолятор) обмотки высшего напряжения
9. Расширительный бак

[http://transfcomplect.narod.ru/transformator.html]

Тематики

• трансформатор

Классификация

>>>

EN

• oil transformer
• oil-cooled transformer
• oil-immersed type transformer

DE

• Öltransformator

FR

• transformateur immergé dans l'huile

 

облучение продуктов питания
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

food irradiation
The most recent addition to food preservation technologies is the use of ionizing radiation, which has some distinct advantages over conventional methods. With irradiation, foods can be treated after packaging, thus eliminating post-processing contamination. In addition, foods are preserved in a fresh state and can be kept longer without noticeable loss of quality. Food irradiation leaves no residues, and changes in nutritional value due to irradiation are comparable with those produced by other processes. Irradiation is the process of applying high energy to a material, such as food, to sterilize or extend its shelf-life by killing microorganisms, insects and other pests residing on it. Sources of ionizing radiation that have been used include gamma rays, electron beams and X-rays. Gamma rays are produced by radioactive isotopes such as Cobalt-60. Electron beams are produced by linear accelerators, which themselves are powered by electricity. The dose applied to a product is the most important factor of the process. At high doses, food is essentially sterilized, just as occurs in canning. Products so treated can be stored at room temperature almost indefinitely. Controversial and banned in some countries. (Source: IFSE / VCN)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• food irradiation

DE

• Lebensmittelbestrahlung

FR

• irradiation des aliments

 

оптимизация
Процесс отыскания варианта, соответствующего критерию оптимальности
[Терминологический словарь по строительству на 12 языках (ВНИИИС Госстроя СССР)]

оптимизация
1. Процесс нахождения экстремума функции, т.е. выбор наилучшего варианта из множества возможных, процесс выработки оптимальных решений; 2. Процесс приведения системы в наилучшее (оптимальное) состояние. Иначе говоря, первое определение трактует термин «О.» как факт выработки и принятия оптимального решения (в широком смысле этих слов); мы выясняем, какое состояние изучаемой системы будет наилучшим с точки зрения предъявляемых к ней требований (критерия оптимальности) и рассматриваем такое состояние как цель. В этом смысле применяется также термин «субоптимизация» в случаях, когда отыскивается оптимум по какому-либо одному критерию из нескольких в векторной задаче оптимизации (см. Оптимальность по Парето, Векторная оптимизация). Второе определение имеет в виду процесс выполнения этого решения: т.е. перевод системы от существующего к искомому оптимальному состоянию. В зависимости от вида используемых критериев оптимальности (целевых функций или функционалов) и ограничений модели (множества допустимых решений) различают скалярную О., векторную О., мно¬гокритериальную О., стохастическую О (см. Стохастическое программирование), гладкую и негладкую (см. Гладкая функция), дискретную и непрерывную (см. Дискретность, Непрерывность), выпуклую и вогнутую (см. Выпуклость, вогнутость) и др. Численные методы О., т.е. методы построения алгоритмов нахождения оп¬тимальных значений целевых функций и соответствующих точек области допустимых значений — развитой отдел современной вычислительной математики. См. Оптимальная задача.
[ http://slovar-lopatnikov.ru/]

Параллельные тексты EN-RU из ABB Review. Перевод компании Интент

 

прогноз выбросов
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

emission forecast
The final step in a clean air plan is to predict future air quality to demonstrate that we can (if we can) meet the health standards by implementing the measures proposed in the plan. This is done by first projecting the emission inventory into the future, taking into account changes in population, housing, employment in specific business sectors, and vehicle miles traveled. These data are obtained from various sources and the resulting emissions are adjusted to account for regulations and control measures scheduled for implementation during the same time period. Additional adjustments are made to reflect large facilities that are expected to start up, modify, or shut down. The resulting inventory is an emission forecast, and is usually expressed in tons per day of particular pollutants for a given year. Additional steps may be required to determine how the forecasted quantities of air pollution will affect the overall air quality. One way to accomplish this is through computer modeling. A computer model simulates how pollutants disperse, react, and move in the air. The inputs to such a computer model are complex. They include weather patterns, terrain, and the chemical nature of air pollutants. (Source: APCD)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• emission forecast

DE

• Emissionsprognose

FR

• prévision d'émission

 

таракан
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

cockroach
The most primitive of the living winged insects. It is thought they have been unchanged for more than 300 million years, and are among the oldest fossil insects. Cockroaches are usually found in tropical climates, but a few species, out of the total 3.500 known species, have become pests. They are common household pests in many countries, imported by ship and carried home in grocery bags. Cockroaches eat plant and animal products, including food, paper, clothing and soiled hospital waste, fouling everything they touch with their droppings and unpleasant odour, to which many people are allergic. They are a major health hazard and carry harmful bacteria, protozoan parasites and faunal pathogens, including those that cause typhoid, leprosy and salmonella. Conventional insecticides make little or no impact on the cockroaches population. (Source: WRIGHT / WPR)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• cockroach

DE

• Schabe

FR

• cafards

 

алкан
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

alkane
Paraffins. A homologous series of saturated hydrocarbons having the general formula CnH2n+2. Their systematic names end in -ane. They are chemically inert, stable, and flammable. The first four members of the series (methane, ethane, propane, butane) are gases at ordinary temperatures; the next eleven are liquids, and form the main constituents of paraffin oil; the higher members are solids. Paraffin waxs consists mainly of higher alkanes. (Source: UVAROV)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• alkane

DE

• Alkan

FR

• alcane

 

атмосферный озон
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

atmospheric ozone
A triatomic molecule of oxygen; a natural constituent of the atmosphere, with the highest concentrations in the ozone layer or stratosphere; it is found at a level between 15 and 30 km above the Earth, which prevents harmful ultraviolet B radiation, which causes skin cancer and threatens plant life, from reaching the ground. The fragile shield is being damaged by chemicals released on Earth. The main chemicals that are depleting stratospheric ozone are chlorofluorocarbons (CFCs), which are used in refrigerators, aerosols and as cleaners in many industries and halons, which are used in fire extinguishers. The damage is caused when these chemicals release highly reactive forms of chlorine and bromine. (Source: GILP96 / WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• atmospheric ozone

DE

• atmosphärisches Ozon

FR

• ozone atmosphérique

 

(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 I_Z
[ 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

• длительно допустимый ток
• допустимый ток

EN

• ampacity (US)
• continuous current
• continuous current-carrying capacity
• current-carrying capacity

DE

• Dauerstrombelastbarkeit, f
• Strombelastbarkeit, f

FR

• courant admissible, m
• courant permanent admissible, m

 

каталитический конвертер
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

catalytic converter
Catalytic converters are designed to clean up the exhaust fumes from petrol-driven vehicles, which are otherwise the major threat to air quality standards in congested urban streets and on motorways. Converters remove carbon monoxide, the unburned hydrocarbons and the oxides of nitrogen. These compounds are damaging to human health and the environment in a variety of ways. The converter is attached to the vehicle' s exhaust near the engine. Exhaust gases pass through the cellular ceramic substrate, a honeycomb-like filter. While compact, the intricate honeycomb structure provides a surface area of 23.000 square metres. This is coated with a thin layer of platinum, palladium and rhodium metals, which act as catalysts that simulate a reaction to changes in the chemical composition of the gases. Platinum and palladium convert hydrocarbons and carbon monoxide into carbon dioxide and water vapour. Rhodium changes nitrogen oxides and hydrocarbons into nitrogen and water, which are harmless. (Source: WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• catalytic converter

DE

• Abgaskatalysator

FR

• pot catalytique

 

комплектное распределительное устройство в металлической оболочке
-

EN

metal-enclosed switchgear
switchgear assemblies with an external metallic enclosure intended to be earthed and complete except for external connections
NOTE The metal-enclosed switchgear is subdivided into three types:
– metal-clad switchgear;
– compartmented switchgear (with one or more non-metallic partitions);
– cubicle switchgear
[IEC 61992-1, ed. 2.0 (2006-02)]

metal-clad switchgear
metal-enclosed switchgear in which components are arranged in separate compartments with metal partitions intended to be earthed
NOTE 1 This term applies to metal-enclosed switchgear with metal partitions providing the degree of protection (or higher) included in IEC 61992-6 and having separate compartments at least for the following components:
– each main switching device;
– components connected to one side of a main switching device, for example, feeder circuit;
– components connected to the other side of the main switching device, for example, busbars; where more than one set of busbars is provided, each set is in a separate compartment.
NOTE 2 Metal-enclosed switchgear having metal partitions and meeting all the requirements of NOTE 1 may utilise an insulating shutter barrier as a part of a shutter arrangement, the combination of which provides the degree of protection included in Table 1 of IEC 61992-6 (or higher) and satisfies the requirements of the standard for partitions and shutters made of insulating material.
[IEC 61992-1, ed. 2.0 (2006-02)]

compartmented switchgear (with non-metallic partitions)
metal-enclosed switchgear in which components are arranged in separate compartments as for metal-clad switchgear, but with one or more non-metallic partitions providing the degree of protection (or higher) included in Table 1 of IEC 61992-6
NOTE Metal-enclosed switchgear in which the main circuit components are individually embedded in solid insulating material can be considered as an alternative, provided that the conditions specified in IEC 60466 are met.
[IEC 61992-1, ed. 2.0 (2006-02)]

cubicle switchgear
switchgear, other than metal-clad and compartmented switchgear
NOTE This term applies to switchgear having a metal enclosure and having
– a number of compartments fewer than required for metal-clad or compartmented switchgear, or
– partitions having a degree of protection lower than those indicated in Table 1 of IEC 61992-6, or
– no partitions.
[IEC 61992-1, ed. 2.0 (2006-02)]

FR

appareillage sous enveloppe métallique
ensemble d’appareillage avec une enveloppe métallique externe destinée à être mise à la terre, entièrement terminé, à l’exception des connexions extérieures
NOTE L’appareillage sous enveloppe métallique se subdivise en trois types:
– appareillage recouvert de métal;
– appareillage à compartiments (avec une ou plusieurs cloisons non métalliques);
– appareillage d’armoire.
[IEC 61992-1, ed. 2.0 (2006-02)]

appareillage recouvert de métal
appareillage sous enveloppe métallique dans lequel les éléments constitutifs sont disposés dans des compartiments séparés par des cloisons métalliques destinées à être mises à la terre
NOTE 1 Ce terme s’applique à l’appareillage sous enveloppe métallique avec des cloisons métalliques offrant le degré de protection de la CEI 61992-6 (ou un degré supérieur) et ayant des compartiments séparés au moins pour les éléments constitutifs suivants:
– chaque appareil principal de connexion;
– les éléments constitutifs connectés à une face de l'appareil principal de connexion, par exemple le circuit d’alimentation;
– les éléments constitutifs connectés à l’autre face de l'appareil principal de connexion, par exemple les jeux de barres; lorsqu’il y a plus d’un jeu de barres, chaque jeu est dans un compartiment séparé.
NOTE 2 L’appareillage sous enveloppe métallique qui possède des cloisons métalliques et qui répond à toutes les dispositions de la note 1 peut utiliser une barrière en volet isolant comme une partie d’une disposition de volet, dont la combinaison fournit un degré de protection inclus au Tableau 1 de la CEI 61992-6 (ou un degré supérieur) et satisfait aux exigences de la norme pour les cloisons et les volets en matériau isolant.
[IEC 61992-1, ed. 2.0 (2006-02)]

appareillage à compartiments (avec cloisons non métalliques)
appareillage sous enveloppe métallique dans lequel les éléments constitutifs sont disposés dans des compartiments séparés comme pour l’appareillage recouvert de métal, mais avec une ou plusieurs cloisons non métalliques fournissant le degré de protection du Tableau 1 de la CEI 61992-6 (ou un degré supérieur)
NOTE L’appareillage sous enveloppe métallique dans lequel les éléments constitutifs du circuit principal sont noyés individuellement dans un matériau isolant solide peut être considéré comme une alternative, si les conditions spécifiées dans la CEI 60466 sont satisfaites.
[IEC 61992-1, ed. 2.0 (2006-02)]

pareillage d’armoire
appareillage, autre que l’appareillage recouvert de métal ou à compartiments
NOTE Ce terme s’applique à l’appareillage ayant une enveloppe métallique et ayant:
– soit un nombre de compartiments inférieur à celui exigé pour les appareillages recouverts de métal ou à compartiments;
– soit des cloisons d’un degré de protection inférieur à ceux du Tableau 1 de la CEI 61992-6;
– soit pas de cloisons.
[IEC 61992-1, ed. 2.0 (2006-02)]

Комплектное распределительное устройство в металлической оболочке
Рис. ABB

ГОСТ 14693-90 - Устройства комплектные распределительные негерметизированные в металлической оболочке на напряжение до 10 кВ

Тематики

• комплектное распред. устройство (КРУ)

Синонимы

• КРУ в металлической оболочке

EN

• compartmented switchgear (with non-metallic partitions)
• cubicle switchgear
• MCSG
• MESG
• metal clad switch gear
• metal clad switchgear
• metal-enclosed switchgear
• metalclad switch gear
• metalclad switchgear

FR

• appareillage recouvert de métal
• appareillage sous enveloppe métallique
• appareillage à compartiments (avec cloisons non métalliques)
• pareillage d’armoire

 

линия вектора
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

line
Term used in GIS technologies in the vector type of internal data organization: spatial data are divided into point, line and polygon types. In most cases, point entities (nodes) are specified directly as coordinate pairs, with lines (arcs or edges) represented as chains of points. Regions are similarly defined in terms of the lines which form their boundaries. Some vector GIS store information in the form of points, line segments and point pairs; others maintain closed lists of points defining polygon regions. Vector structures are especially suited to storing definitions of spatial objects for which sharp boundaries exist or can be imposed. (Source: YOUNG)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• line

DE

• Linie

FR

• ligne

 

опустынивание
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

desertification
1) The development of desert conditions as a result of human activity or climatic changes.
2) The process of land damage which allows the soil to spread like a desert in arid and semi-arid regions. There is a loss of vegetative cover and the soil deteriorates in texture, nutrient content and fertility. Desertification affects the lives of three-quarters of the world's population, 70 % of all drylands and one quarter of the total land area of the planet. There are many reasons for desertification, but the majority are caused by human activities, overgrazing, deforestation, poor land management and over-exploitation. Agenda 21 states that the priority in combating desertification should be establishing preventive measures for lands that are not yet, or are only slightly, degraded.
(Source: LBC / WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• desertification

DE

• Wüstenausbreitung

FR

• désertification

 

природный заповедник
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

nature reserve
Areas allocated to preserve and protect certain animals and plants, or both. They differ from national park, which are largely a place for public recreation, because they are provided exclusively to protect species for their own sake. Endangered species are increasingly being kept in nature reserves to prevent them from extinction, particularly in India, Indonesia and some African countries. Natural reserves were used once to preserve the animals that landowners hunted, but, in the 19th century, they became places where animals were kept to prevent them from dying out. Special refuges and sanctuaries are also often designated to protect certain species or groups of wild animals or plants, especially if their numbers and distribution have been significantly reduced. They also serve as a place for more plentiful species to rest, breed or winter. Many parts of the world also have marine and aquatic reserves to protect different species of sea or freshwater plant and animal life. (Source: WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• nature reserve

DE

• Naturschutzgebiet

FR

• réserve naturelle

 

разведение устриц
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

oyster farming
There are two types of oyster farming: suspension culture, in which oysters are grown off bottom, in floating trays, is a labor-intensive form of cultivation that requires continuous tending and cleaning of both gear and shellfish, and bottom culture, which is similar to conventional crop farming on land; it involves selecting areas of the sea floor that provide a natural food supply, necessary currents, minimum exposure to predators, and proper temperature and then "seeding" the bottom with shellfish stock that are left to grow to market size. Then they are harvested with a bottom drag from a boat. Both suspension culture and bottom culture depend on natural food supplies for growing the shellfish being raised. (Source: MSTF)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• oyster farming

DE

• Austernzucht

FR

• ostréiculture

 

разрушение озонового слоя
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

EN

ozone layer depletion
The fragile shield of ozone is been damaged by chemicals released on earth. The main chemicals that are depleting stratospheric ozone are chlorofluorocarbons which are used in refrigerators, aerosols, and as cleaners in many industries, and halons, which are used in fire extinguishers. The damage is caused when these chemicals release highly reactive forms of chlorine and bromine. Over the past 30 years ozone levels over parts of Antarctica have dropped by almost 40% during some months and a "hole" in ozone concentrations is clearly visible in satellite observations. (Source: WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]

Тематики

• охрана окружающей среды

EN

• ozone layer depletion

DE

• Abbau der Ozonschicht

FR

• appauvrissement de la couche d'ozone