-
1 complex conductor
English-Russian big polytechnic dictionary > complex conductor
-
2 complex conductor
Механика: сложный проводник -
3 complex conductor
-
4 complex conductor
English-Russian dictionary of mechanical engineering and automation > complex conductor
-
5 conductor
1) провод2) проводник•- bimetallic conductor
- compacted conductor
- compensating conductor
- complex conductor
- composite conductor
- concentric conductor
- concentrically stranded conductor
- first-class conductor
- flexible conductor
- flush conductor
- grounding conductor
- heating conductor
- hollow conductor
- insulated conductor
- magnetic conductor
- neutral conductor
- second-class conductor
- simple conductor
- technological conductorEnglish-Russian dictionary of mechanical engineering and automation > conductor
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6 too complex
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7 courant admissible, m
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Франко-русский словарь нормативно-технической терминологии > courant admissible, m
-
8 courant permanent admissible, m
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Франко-русский словарь нормативно-технической терминологии > courant permanent admissible, m
-
9 Dauerstrombelastbarkeit, f
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Немецко-русский словарь нормативно-технической терминологии > Dauerstrombelastbarkeit, f
-
10 Strombelastbarkeit, f
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Немецко-русский словарь нормативно-технической терминологии > Strombelastbarkeit, f
-
11 continuous current-carrying capacity
длительная пропускная способность по току
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]Тематики
- электротехника, основные понятия
EN
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Англо-русский словарь нормативно-технической терминологии > continuous current-carrying capacity
-
12 ampacity (US)
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Англо-русский словарь нормативно-технической терминологии > ampacity (US)
-
13 continuous current
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
непрерывный ток
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999]Тематики
- электротехника, основные понятия
EN
Англо-русский словарь нормативно-технической терминологии > continuous current
-
14 current-carrying capacity
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
предельно допустимый ток
—
[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
прочность печатной платы к токовой нагрузке
Свойство печатной платы сохранять электрические и механические характеристики после воздействия максимально допустимой токовой нагрузки на печатный проводник или металлизированное отверстие печатной платы.
[ ГОСТ Р 53386-2009]Тематики
EN
Англо-русский словарь нормативно-технической терминологии > current-carrying capacity
-
15 PIC
1) Общая лексика: Роттердамская конвенция о применении процедуры предварительного обоснованного согласия в от (Rotterdam Convention on the Prior Consent Procedure for Certain Hazardous Chemical and Pesticides in International Trade)2) Компьютерная техника: Platform For Internet Content, Portable Imaging Computer, Programmable Instruction Chip, Programmable Intelligent Controller, programmable chip3) Авиация: КВС (Командир Воздушного Судна) (Pilot In Command), (pilot in command) командир экипажа4) Медицина: Pharmaceutical Inspection Convention, preinitiation complex5) Американизм: Pre Ike Credential, Public Interest Committee6) Военный термин: Pacific Imagery Processing and Interpretation Center, Parent Indicator Code, Persistence In Combat, Pioneers In Control, Processing and Interpretation Center, Public Information Committee, photointerpretation center, preinstallation calibration, preinstallation checkout, priority indicator code, procedures for instrument calibration, procurement information center, procurement information for contracts, program identification code, project information center, public information center, purpose identification code7) Техника: photographic interpretation center, pressure-indicating controller, pressurized ion chamber, program interrupt control, programmable integrated control equipment8) Шутливое выражение: Pissed Idiotic Child9) Юридический термин: Partner In Crime, Partners In Crime, Pre Inquiry Change10) Фармакология: Конвенция по фармацевтическим инспекциям (Pharmaceutical Inspection Convention)11) Биржевой термин: property index certificate12) Оптика: photonic integrated circuit13) Телекоммуникации: Personal Instant Communications, Physical Interface Card, Polyolefin Insulated Cable, Preferred Interexchange Carrier, Programmable Interrupt Controller14) Сокращение: Pacific Intelligence Center, Package Identification Code (barcode, USPS pub. 109), Pilot In Command, Plastic Insulated Conductor, Plastic/Polyethylene Insulated Cable, Position Independant Code, Programmable Integrated Circuit, Position Independent Code, Programmable Interruption Controller15) Университет: Pioneer Involvement Center16) Физика: Particle-In-Cell, Precision Ion Chamber17) Электроника: PC Paint image format18) Вычислительная техника: Primary Independent Carrier, personal intelligent communicator, programmable interface controller, расширение файлов в формате Lotus Pie, сжатие неподвижных изображений, Priority Interrupt Controller (IC), Point in Call (IN), Programmable Interrupt Controller (PIC), Plastic/Polyethelene Insulated Cable (Telephony)19) Нефть: Perforating Investigating Committee, person in charge, pressure indicator control, process interface unit20) Иммунология: Pre Initiation Complex21) Токсикология: poison information center22) Транспорт: Preferred Interstate Carrier23) Фирменный знак: Pig Improvement Company24) Экология: Pollution Identification And Correction25) СМИ: Picture In Case26) Деловая лексика: Paid In Capital, Purchase Integration And Completion27) Глоссарий компании Сахалин Энерджи: project inspection coordinator, контроллер индикатора давления (pressure indicator controller)28) Образование: Parent Involvement Committee, Polite In Class, Private Industry Council, Professional Instruction Center29) Сетевые технологии: Picture Image Compression, personal identification code, персональный идентификационный код30) Полимеры: polymer-impregnated concrete31) Программирование: Punch Invalid Character32) Сахалин Р: pressure indicator controller33) Химическое оружие: products of incomplete combustion34) Макаров: prior informed consent35) Расширение файла: Macintosh black & white PICT1 or color PICT2 file, PIXAR picture file, Personal Information Carrier, Pictor page format, Priority Interrupt Controller, Process Interface Control, Program Interrupt Controller, Picture file (and Graphic format, CShow, Alchemy, PC Paint, Pictor)36) Нефть и газ: person-in-charge, ответственное лицо37) Электротехника: polyethylene-insulated conductor38) Майкрософт: контроллер PIC39) Должность: Personal Information Connection, Pictorial Inventory Of Careers, Professional Interest Committee40) NYSE. Piccadilly Cafeterias, Inc.41) Аэропорты: Pine Cay, Turks & Caicos Islands -
16 Pic
1) Общая лексика: Роттердамская конвенция о применении процедуры предварительного обоснованного согласия в от (Rotterdam Convention on the Prior Consent Procedure for Certain Hazardous Chemical and Pesticides in International Trade)2) Компьютерная техника: Platform For Internet Content, Portable Imaging Computer, Programmable Instruction Chip, Programmable Intelligent Controller, programmable chip3) Авиация: КВС (Командир Воздушного Судна) (Pilot In Command), (pilot in command) командир экипажа4) Медицина: Pharmaceutical Inspection Convention, preinitiation complex5) Американизм: Pre Ike Credential, Public Interest Committee6) Военный термин: Pacific Imagery Processing and Interpretation Center, Parent Indicator Code, Persistence In Combat, Pioneers In Control, Processing and Interpretation Center, Public Information Committee, photointerpretation center, preinstallation calibration, preinstallation checkout, priority indicator code, procedures for instrument calibration, procurement information center, procurement information for contracts, program identification code, project information center, public information center, purpose identification code7) Техника: photographic interpretation center, pressure-indicating controller, pressurized ion chamber, program interrupt control, programmable integrated control equipment8) Шутливое выражение: Pissed Idiotic Child9) Юридический термин: Partner In Crime, Partners In Crime, Pre Inquiry Change10) Фармакология: Конвенция по фармацевтическим инспекциям (Pharmaceutical Inspection Convention)11) Биржевой термин: property index certificate12) Оптика: photonic integrated circuit13) Телекоммуникации: Personal Instant Communications, Physical Interface Card, Polyolefin Insulated Cable, Preferred Interexchange Carrier, Programmable Interrupt Controller14) Сокращение: Pacific Intelligence Center, Package Identification Code (barcode, USPS pub. 109), Pilot In Command, Plastic Insulated Conductor, Plastic/Polyethylene Insulated Cable, Position Independant Code, Programmable Integrated Circuit, Position Independent Code, Programmable Interruption Controller15) Университет: Pioneer Involvement Center16) Физика: Particle-In-Cell, Precision Ion Chamber17) Электроника: PC Paint image format18) Вычислительная техника: Primary Independent Carrier, personal intelligent communicator, programmable interface controller, расширение файлов в формате Lotus Pie, сжатие неподвижных изображений, Priority Interrupt Controller (IC), Point in Call (IN), Programmable Interrupt Controller (PIC), Plastic/Polyethelene Insulated Cable (Telephony)19) Нефть: Perforating Investigating Committee, person in charge, pressure indicator control, process interface unit20) Иммунология: Pre Initiation Complex21) Токсикология: poison information center22) Транспорт: Preferred Interstate Carrier23) Фирменный знак: Pig Improvement Company24) Экология: Pollution Identification And Correction25) СМИ: Picture In Case26) Деловая лексика: Paid In Capital, Purchase Integration And Completion27) Глоссарий компании Сахалин Энерджи: project inspection coordinator, контроллер индикатора давления (pressure indicator controller)28) Образование: Parent Involvement Committee, Polite In Class, Private Industry Council, Professional Instruction Center29) Сетевые технологии: Picture Image Compression, personal identification code, персональный идентификационный код30) Полимеры: polymer-impregnated concrete31) Программирование: Punch Invalid Character32) Сахалин Р: pressure indicator controller33) Химическое оружие: products of incomplete combustion34) Макаров: prior informed consent35) Расширение файла: Macintosh black & white PICT1 or color PICT2 file, PIXAR picture file, Personal Information Carrier, Pictor page format, Priority Interrupt Controller, Process Interface Control, Program Interrupt Controller, Picture file (and Graphic format, CShow, Alchemy, PC Paint, Pictor)36) Нефть и газ: person-in-charge, ответственное лицо37) Электротехника: polyethylene-insulated conductor38) Майкрософт: контроллер PIC39) Должность: Personal Information Connection, Pictorial Inventory Of Careers, Professional Interest Committee40) NYSE. Piccadilly Cafeterias, Inc.41) Аэропорты: Pine Cay, Turks & Caicos Islands -
17 pic
1) Общая лексика: Роттердамская конвенция о применении процедуры предварительного обоснованного согласия в от (Rotterdam Convention on the Prior Consent Procedure for Certain Hazardous Chemical and Pesticides in International Trade)2) Компьютерная техника: Platform For Internet Content, Portable Imaging Computer, Programmable Instruction Chip, Programmable Intelligent Controller, programmable chip3) Авиация: КВС (Командир Воздушного Судна) (Pilot In Command), (pilot in command) командир экипажа4) Медицина: Pharmaceutical Inspection Convention, preinitiation complex5) Американизм: Pre Ike Credential, Public Interest Committee6) Военный термин: Pacific Imagery Processing and Interpretation Center, Parent Indicator Code, Persistence In Combat, Pioneers In Control, Processing and Interpretation Center, Public Information Committee, photointerpretation center, preinstallation calibration, preinstallation checkout, priority indicator code, procedures for instrument calibration, procurement information center, procurement information for contracts, program identification code, project information center, public information center, purpose identification code7) Техника: photographic interpretation center, pressure-indicating controller, pressurized ion chamber, program interrupt control, programmable integrated control equipment8) Шутливое выражение: Pissed Idiotic Child9) Юридический термин: Partner In Crime, Partners In Crime, Pre Inquiry Change10) Фармакология: Конвенция по фармацевтическим инспекциям (Pharmaceutical Inspection Convention)11) Биржевой термин: property index certificate12) Оптика: photonic integrated circuit13) Телекоммуникации: Personal Instant Communications, Physical Interface Card, Polyolefin Insulated Cable, Preferred Interexchange Carrier, Programmable Interrupt Controller14) Сокращение: Pacific Intelligence Center, Package Identification Code (barcode, USPS pub. 109), Pilot In Command, Plastic Insulated Conductor, Plastic/Polyethylene Insulated Cable, Position Independant Code, Programmable Integrated Circuit, Position Independent Code, Programmable Interruption Controller15) Университет: Pioneer Involvement Center16) Физика: Particle-In-Cell, Precision Ion Chamber17) Электроника: PC Paint image format18) Вычислительная техника: Primary Independent Carrier, personal intelligent communicator, programmable interface controller, расширение файлов в формате Lotus Pie, сжатие неподвижных изображений, Priority Interrupt Controller (IC), Point in Call (IN), Programmable Interrupt Controller (PIC), Plastic/Polyethelene Insulated Cable (Telephony)19) Нефть: Perforating Investigating Committee, person in charge, pressure indicator control, process interface unit20) Иммунология: Pre Initiation Complex21) Токсикология: poison information center22) Транспорт: Preferred Interstate Carrier23) Фирменный знак: Pig Improvement Company24) Экология: Pollution Identification And Correction25) СМИ: Picture In Case26) Деловая лексика: Paid In Capital, Purchase Integration And Completion27) Глоссарий компании Сахалин Энерджи: project inspection coordinator, контроллер индикатора давления (pressure indicator controller)28) Образование: Parent Involvement Committee, Polite In Class, Private Industry Council, Professional Instruction Center29) Сетевые технологии: Picture Image Compression, personal identification code, персональный идентификационный код30) Полимеры: polymer-impregnated concrete31) Программирование: Punch Invalid Character32) Сахалин Р: pressure indicator controller33) Химическое оружие: products of incomplete combustion34) Макаров: prior informed consent35) Расширение файла: Macintosh black & white PICT1 or color PICT2 file, PIXAR picture file, Personal Information Carrier, Pictor page format, Priority Interrupt Controller, Process Interface Control, Program Interrupt Controller, Picture file (and Graphic format, CShow, Alchemy, PC Paint, Pictor)36) Нефть и газ: person-in-charge, ответственное лицо37) Электротехника: polyethylene-insulated conductor38) Майкрософт: контроллер PIC39) Должность: Personal Information Connection, Pictorial Inventory Of Careers, Professional Interest Committee40) NYSE. Piccadilly Cafeterias, Inc.41) Аэропорты: Pine Cay, Turks & Caicos Islands -
18 PEC
1) Военный термин: Pacific Command Electronic Intelligence Center, plant equipment code, production equipment code, program element code4) Религия: Pentecostal European Conference5) Автомобильный термин: power electronic converter6) Сокращение: Platform Evaluation Confidence, Printed Electronic Circuits, Professional Education Conference, Professional Educational Conference, Protestant Episcopal Church, photoelectrochemical cell7) Университет: Post Education Consortium8) Электроника: Perfect Electric Conductor plate, Platform Electronic Cards9) Вычислительная техника: packaged electronic circuit, Program Execution Control (IBM, OS/2)10) Нефть: parallel earthing conductor, protection earthing conductor, проводник защитного заземления11) Иммунология: peritoneal exudate cells12) Биотехнология: Peritoneal exudate cell13) Фирменный знак: Pacific Eye Clinic14) Глоссарий компании Сахалин Энерджи: главный подряд на проектирование (Principal Engineering Contract)15) Сетевые технологии: Peripheral Event Controller16) Полимеры: photoelectric cell17) Полупроводники: photoelectrochemical18) Сахалин Р: Primary Engineering Contractor, Principal Engineering Contract19) Физическая химия: фотоэлектрохимическое травление (photo-electro-chemical etching)20) Электротехника: post-emergency conditions21) Аэропорты: Pelican, Alaska USA22) Хобби: Personal Embroidery Card23) Международная торговля: President's Export Council -
19 Pec
1) Военный термин: Pacific Command Electronic Intelligence Center, plant equipment code, production equipment code, program element code4) Религия: Pentecostal European Conference5) Автомобильный термин: power electronic converter6) Сокращение: Platform Evaluation Confidence, Printed Electronic Circuits, Professional Education Conference, Professional Educational Conference, Protestant Episcopal Church, photoelectrochemical cell7) Университет: Post Education Consortium8) Электроника: Perfect Electric Conductor plate, Platform Electronic Cards9) Вычислительная техника: packaged electronic circuit, Program Execution Control (IBM, OS/2)10) Нефть: parallel earthing conductor, protection earthing conductor, проводник защитного заземления11) Иммунология: peritoneal exudate cells12) Биотехнология: Peritoneal exudate cell13) Фирменный знак: Pacific Eye Clinic14) Глоссарий компании Сахалин Энерджи: главный подряд на проектирование (Principal Engineering Contract)15) Сетевые технологии: Peripheral Event Controller16) Полимеры: photoelectric cell17) Полупроводники: photoelectrochemical18) Сахалин Р: Primary Engineering Contractor, Principal Engineering Contract19) Физическая химия: фотоэлектрохимическое травление (photo-electro-chemical etching)20) Электротехника: post-emergency conditions21) Аэропорты: Pelican, Alaska USA22) Хобби: Personal Embroidery Card23) Международная торговля: President's Export Council -
20 pec
1) Военный термин: Pacific Command Electronic Intelligence Center, plant equipment code, production equipment code, program element code4) Религия: Pentecostal European Conference5) Автомобильный термин: power electronic converter6) Сокращение: Platform Evaluation Confidence, Printed Electronic Circuits, Professional Education Conference, Professional Educational Conference, Protestant Episcopal Church, photoelectrochemical cell7) Университет: Post Education Consortium8) Электроника: Perfect Electric Conductor plate, Platform Electronic Cards9) Вычислительная техника: packaged electronic circuit, Program Execution Control (IBM, OS/2)10) Нефть: parallel earthing conductor, protection earthing conductor, проводник защитного заземления11) Иммунология: peritoneal exudate cells12) Биотехнология: Peritoneal exudate cell13) Фирменный знак: Pacific Eye Clinic14) Глоссарий компании Сахалин Энерджи: главный подряд на проектирование (Principal Engineering Contract)15) Сетевые технологии: Peripheral Event Controller16) Полимеры: photoelectric cell17) Полупроводники: photoelectrochemical18) Сахалин Р: Primary Engineering Contractor, Principal Engineering Contract19) Физическая химия: фотоэлектрохимическое травление (photo-electro-chemical etching)20) Электротехника: post-emergency conditions21) Аэропорты: Pelican, Alaska USA22) Хобби: Personal Embroidery Card23) Международная торговля: President's Export Council
- 1
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