complex+material

(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

(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

(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

выйти из трудного положения — to come out of a difficult situation

изучить положение — to study the situation

исправить положение — to mend / to redress the situation

контролировать положение — to bring the situation under control

нормализовать положение — to normalize the situation, to bring the situation back to normal

обострить / усугубить положение — to exacerbate / to aggravate the situation

поправить положение — to remedy the situation

спасти положение — to retrieve a situation

стабилизировать положение — to stabilize the situation

урегулировать положение — to resolve / to handle a situation

бедственное положение — disastrous situation

безвыходное / безнадёжное положение — desperate condition / situation

взрывоопасное положение — explosive situation

затруднительное положение — embarrassing situation, quandary

критическое положение — critical situation

международное положение — international situation

обзор международного положения — survey of the international situation

ухудшение международного положения — deterioration of the international situation

мировое продовольственное положение — world food situation

мировое экономическое положение — world economic situation

напряжённое положение — situation of strain, tense situation

иметь дело с напряжённым положением — to deal with a situation of strain

неравноправное положение — unequal situation

нестабильное / неустойчивое положение — situation of insecurity

обостряющееся международное положение — aggravating international situation

политическое положение — political situation

обострение политического положения — aggravation / worsening of a political situation

неустойчивость политического положения — political instability

правовое положение, положение, возникшее в результате выполнения договора — legal situation created through the execution of the treaty

социально-экономическое положение — socio-economic situation

стратегическое положение — strategic(al) situation

угрожающее положение — grave / perilous situation

ухудшающееся положение — deteriorating situation

финансовое положение — financial position / standing / situation, state of play

экономическое положение — economic situation, economic status

экономическое положение ухудшается — the economic situation is deteriorating

обострение положения — aggravation of the situation

острота положения — exigencies of the situation

положение в области международных платёжных балансов / расчётов — world payment situation

положение, при котором существует прочная безопасность и стабильность — situation of lasting security and stability

урегулирование положения — handling of the situation

воспользоваться своим положением — to capitalize on one's position

восстановить своё положение — to regain one's positions

занимать положение — to occupy a position

менять положение — to shift one's position

находиться в неравном положении — to be in an unequal position

находиться на нелегальном положении — to be operating illegally, be in hiding

перейти на нелегальное положение — to go underground

поставить в зависимое положение — to place in a position of dependence

потерять прежнее положение — to give / to lose ground

ведущее положение в мировой науке — leading place in world science

занимать ведущее положение — to take the leading place, to be at the top

видное / выдающееся положение — prominence

выигрышное положение — winning / advantageous / strong position

высокое положение — high position, eminence

высокое положение в обществе — high position in society

занимающий высокое положение — eminent ranking

доминирующее положение — dominant position

восстановить доминирующее положение — to resume a dominant position

занимать доминирующее положение — to occupy a dominant position

законное положение — legal standing

имущественное положение — property status

ложное положение — false / ambigious position

материальное положение — material standing

неполноправное положение — unequal position

неполноправное положение женщин — unequal position of women

общественное положение — social status, walk

официальное положение — official standing

преимущественное положение — preponderant position

привилегированное положение — privileged position

занимать привилегированное положение — to take a privileged position

равное положение — equal status

семейное положение — family status

служебное положение — official position / status

злоупотребление служебным положением — abuse of one's office

положение в обществе — social status

положение отверженного — pariah status

положение темнокожего населения — status of the coloured population

военное положение — martial law

быть на военном положении — to be under martial law

вводить / объявить военное положение — to declare / to introduce / to impose / to proclaim martial law

отменить военное положение — to lift martial law

переводить на военное положение — to put on a war footing

осадное положение — state of siege

ввести осадное положение — to establish / to impose a state of siege

объявить осадное положение — to declare / to proclaim a state of siege

отменить осадное положение — to lift the state of siege

чрезвычайное положение — emergency situation, state of emergency

ввести / объявить в стране чрезвычайное положение — to impose / to declare a state of emergency in a country

объявить чрезвычайное положение — to declare / to proclame a state of emergency

отменить чрезвычайное положение — to lift the state of emergency

продлить чрезвычайное положение — to extend / to prolong state of emergency

снять некоторые ограничения, обусловленные чрезвычайным положением — to relax / to ease the state of emergency

отступить от положения — to derogate from a provision

содержать положения — to embody regulations

толковать положения Устава ООН — to interpret the provisions of the UN Charter

действующее положение — provision in force

в рамках действующих положений — under provisions in force

договорное положение — treaty / contractual provision

делимость договорных положений — separability of treaty provisions

делимость положений договора не допускается — no separation of the provisions of the treaty is permitted

(существенное) нарушение договорных положений — (material) breach of treaty provisions

заключительное положение — final clause

ключевые положения договора — key provisions of a treaty

общие положения — general provisions

ограничительное положение — safeguarding clause

основные положения — principal provisions

прочие положения — miscellaneous provisions

спорное положение — debatable provision

уставные положения — constitutional provisions

ясно выраженное положение — explicit provision

нарушение положения договора — violation of a treaty provision

положения, введённые в законодательство государства — provisions incorporated into the legislation of a state

положения договора — treaty provisions, provisions of a treaty

применение положений договора — application of the provisions / of a treaty

в соответствии с положениями договора — in conformity with the provisions of the treaty

положение о наибольшем благоприятствовании — most favoured nation clause

положение о персонале — staff regulations

положение я, регулирующие торговлю — enactments for the regulation of trade

сфера применения положения — scope of provision

быть хозяином положения — to bear / to carry the bag

быть на высоте положения — to be equal / to rise to the occasion

оказаться в ложном положении — to be in a false position

оказаться в лучшем положении, чем кто-л. — to have an advantage of / over smb.

бедственное положение — plight

быть в бедственном положении — to be in a shambles

безвыходное положение — hopeless situation, impasse, dead end, deadlock

быть / находиться в безвыходном положении — to be at a deadlock

попасть в безвыходное положение — to come to / to reach a dead end

запутанное положение — knot

затруднительное положение — troublesome / difficult situation / involvement

быть / находиться в затруднительном положении — to be at a low ebb, to top the barrel

выпутаться из затруднительного положения — to extricate oneself from difficulties

поставить кого-л. в затруднительное положение — to manoeuvre smb. into a corner / an awkward position

настоящее / фактическое положение дел — actual state of things

невыгодное положение — disadvantage

находиться в невыгодном положении — to be at a disadvantage

ставить в невыгодное положение — to place at a disadvantage

небезопасное положение — insecure position

неловкое положение — awkward position / situation

неопределённое положение — fuzzy position

непрочное положение — unstable / shaky position

сложное положение — complex situation

современное положение дел — present-day situation

сохранять существующее положение — to maintain the status quo

трудное положение — difficult situation

попасть в трудное положение — to get into a difficulty

щекотливое положение — awkward / embarrassing situation

положение дел — state of affairs / things, juncture

извращать подлинное положение дел — to distort the true state of affairs

исправить положение дел — to put things right

при настоящем положении дел — at this juncture

положение, из которого невозможно выйти — catch 22

в положении доверенного лица — in a fiduciary capacity

географическое положение — geographical location

In specific (or individual) cases excess ammonium hydroxide dissolves copper as a complex ion.

In some instances one can use pulsed laser to permit...

This material may, on occasion, be seen to leave the comet's nucleus.

In specific (or individual) cases excess ammonium hydroxide dissolves copper as a complex ion.

In some instances one can use pulsed laser to permit...

This material may, on occasion, be seen to leave the comet's nucleus.

High-bromine compounds often impart self-extinguishing characteristics to other materials.

The mechanical properties of polymeric materials are very complex.

The features of the new material will be described below.

The calculations become more intricate (or tedious, or involved, or cumbersome).

This is a much more elaborate procedure than is necessary for the coal material itself.

One of today's most important and challenging problems is the development of...

A combination magnetic/filter separator cuts down costs, but is an elaborate piece of equipment.

The surface wind system... is much more complicated and complex than...

Fairly elaborate computations are necessary.

Techniques which are common in the motion-picture business have been adopted for many of the more involved

(or intricate) television productions.

Very sophisticated mathematical techniques...

Sophisticated equipment...

A composite two-fibre waveguide...

The transition is a compound one (both the spin and the orbit must change).

A composite particle...

The technique eliminates the need to design...

The development of the high-speed wind tunnel obviated the need for these techniques.

The method obviates the necessity for (or dispenses with) a second light source.

The new material will save costly grinding and finishing.

This makes shaft lining unnecessary in hard massive rocks.

The float process does away with the polishing operations.

Thus the need to store substantial quantities of spares will be avoided.

This eliminates the necessity for manual adjustments.

The new device eliminates the need for (or of) the coupling capacitor.

They have done away with the need for lenses.

This approximation dispenses with the need for complex computer calculations.