-
1 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
-
2 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
-
3 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
-
4 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
-
5 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
-
6 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)
-
7 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
-
8 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
-
9 extra
ˈekstrə
1. сущ.
1) обыкн. мн. доплата, наценка She is disgusted by big hotels adding so many extras to the bill that it nearly doubles. ≈ Она возмущается большими отелями, в которых к основному счету добавляется так много доплат, что он практически удваивается.
2) услуги, вещи и т. п., предоставляемые за дополнительную плату Optional extras include cooking tuition at a top restaurant. ≈ Дополнительные услуги включают обучение кулинарному искусству в лучшем ресторане.
3) специальный, экстренный выпуск( газеты) to issue, publish, put out an extra ≈ выпускать экстренный номер
4) театр., кино статист
5) высший сорт, экстра
2. прил.
1) добавочный, дополнительный Extra staff have been taken on to cover busy periods. ≈ Был набран дополнительный штат, чтобы обеспечить выполнение работы в загруженное время. extra duty ≈ дополнительные обязанности extra work ≈ дополнительная работа Syn: additional, supplementary
2) подлежащий дополнительной оплате The price of your meal is extra. ≈ За еду взимается дополнительная плата.
3) высшего качества extra quality ≈ высшего качества Syn: superior
1.
3. нареч.
1) отдельно, дополнительно The cost of packing is L75 extra. ≈ Стоимость упаковки - 75 фунтов стерлингов дополнительно. Technical service will be charged extra. ≈Техническое обслуживание будет оплачиваться дополнительно. The larger edition contains three maps extra. ≈ Большее издание содержит дополнительно три карты.
2) разг. особо, особенно I'd have to be extra careful. ≈ Я должен быть особенно осторожным. We were all told to try extra hard to be nice to him. ≈ Нам было сказано, что мы должны особо постараться и быть с ним повежливее. extra dry ≈ брют (сверх сухое шампанское) Syn: especially особая плата, приплата;
наценка - no *s без всяких приплат( в объявлениях гостиниц означает, что услуги, отопление и т. п. включаются в цену номера) - to pay a little * to a chauffeur немного приплатить шоферу что-л. предоставляемое за дополнительную плату - the school fees are $10 a term, singing and dancing are *s обучение в школе стоит 10 долларов в семестр, за уроки танцев и музыки взимается особая плата экстренный выпуск( газеты) высший сорт;
сорт экстра (американизм) (разговорное) временный, сезонный рабочий (кинематографический) (театроведение) (разговорное) статист;
статистка;
актер массовки (техническое) дополнительные, нестандартные или поставляемые за особую плату принадлежности - a new car equipped with many *s новый автомобиль с массой дополнительных приспособлений добавочный, дополнительный - * amount излишек - * edition дополнительный тираж( газеты) ;
экстренный выпуск - * hours сверхурочные часы - * pay дополнительная оплата;
добавочный оклад - * postage дополнительная почтовая оплата - * period /time/ (спортивное) добавочное /дополнительное/ время - * player( кинематографический) (театроведение) статист;
статистка;
актер массовки - * allowances( военное) добавочное денежное довольствие - * fare /messing/ (военное) дополнительное питание - * nutrition( сельскохозяйственное) подкормка подлежащий особой оплате - room service is * за подачу еды и напитков в номера взимается дополнительная плата особый, специальный;
экстраординарный - * size большой размер( одежды) ;
(военное) дополнительный рост (обмундирования) - * allowance /discount/ (коммерческое) особая скидка - * charge особая плата - * duty (военное) наряд вне очереди - * excitation (медицина) перевозбуждение - * risks (страхование) особые риски высшего качества - * grade сорт экстра - * binding роскошный переплет( специальное) лишний, избыточный особо, особенно;
отдельно;
дополнительно - * strong binding особо прочный переплет - * large sizes размеры для полных и высоких - an * high price чрезвычайно высокая цена - to work * работать сверхурочно - to work * well работать особенно хорошо ~ дополнительно;
charged extra оплачиваемый дополнительно extra высшего качества ~ высший сорт ~ добавочный, дополнительный;
extra duty дополнительные обязанности ~ добавочный, дополнительный ~ добавочный ~ дополнительно;
charged extra оплачиваемый дополнительно ~ (что-л.) дополнительное;
сверх программы;
приплата;
service, fire and light are extras за услуги, отопление и освещение особая плата ~ дополнительный ~ лишний, излишний;
she has nothing extra around her waist у нее безукоризненная талия;
= ничего лишнего ~ pl накладные расходы ~ наценка ~ особая плата, наценка ~ особая платиа ~ особо, особенно ~ особый ~ приплата ~ сорт экстра ~ специальный ~ театр., кино статист ~ экстра ~ экстраординарный ~ экстренный выпуск (газеты) ~ (что-л.) дополнительное;
сверх программы;
приплата;
service, fire and light are extras за услуги, отопление и освещение особая плата pay ~ производить дополнительный платеж ~ (что-л.) дополнительное;
сверх программы;
приплата;
service, fire and light are extras за услуги, отопление и освещение особая плата service: service = service-tree ~ вчт. абонентский ~ вручение( судебного документа) ~ долговечность ~ заправлять( горючим) ~ мор. клетневание ~ обслуживание, сервис ~ обслуживание ~ обслуживать ~ оплата ~ оплачивать ~ повинность ~ погашать ~ погашение долга ~ спорт. подача( мяча) ~ проводить осмотр и текущий ремонт (машины и т. п.) ~ проводить техническое обслуживание ~ работа ~ воен. род войск;
the (fighting) services армия, флот и военная авиация ~ связь ~ сервиз ~ сервис ~ церк. служба;
to say a service отправлять богослужение ~ служба (область работы и т. п.) ;
Civil Service государственная (гражданская) служба;
National Service воинская или трудовая повинность( в Англии) ~ служба;
to take into one's service нанимать;
to take service (with smb.) поступать на службу (к кому-л.) ~ служба, личный наем, обслуживание, услуга ~ служба ~ вчт. служебный ~ случать ~ сообщение, связь, движение;
рейсы ~ сообщение ~ срок службы ~ судебное извещение ~ сфера деятельности ~ техническое обслуживание ~ уплата ~ уплата дивидендов ~ уплата капитальной суммы ~ уплата процентов ~ уплачивать ~ уплачивать дивиденды ~ услуга, одолжение;
at your service к вашим услугам;
to be of service быть полезным ~ услуга ~ уход ~ эксплуатация ~ эксплуатировать ~ лишний, излишний;
she has nothing extra around her waist у нее безукоризненная талия;
= ничего лишнего -
10 extra
1. [ʹekstrə] n1. 1) часто pl особая плата, приплата; наценкаno extras - без всяких приплат (в объявлениях гостиниц означает, что услуги, отопление и т. п. включаются в цену номера)
to pay a little extra to a chauffeur [for a larger room] - немного приплатить шофёру [за большую комнату]
2) что-л. предоставляемое за дополнительную платуthe school fees are £10 a term, singing and dancing are extras - обучение в школе стоит 10 фунтов в семестр, за уроки танцев и музыки взимается особая плата
2. экстренный выпуск ( газеты)3. высший сорт; сорт экстра4. амер. разг. временный, сезонный рабочий2. [ʹekstrə] aa new car equipped with many extras - новый автомобиль с массой дополнительных приспособлений
1. 1) добавочный, дополнительныйextra edition - а) дополнительный тираж ( газеты); б) экстренный выпуск
extra pay - а) дополнительная оплата; б) добавочный оклад
extra period /time/ - спорт. добавочное /дополнительное/ время
extra player - кино, театр. статист; статистка; актёр массовки
extra allowances - воен. добавочное денежное довольствие [ср. тж. 2]
extra fare /messing/ - воен. дополнительное питание
extra nutrition - с.-х. подкормка
2) подлежащий особой оплатеroom service is extra - за подачу еды и напитков в номера взимается дополнительная плата
2. особый, специальный; экстраординарныйextra size - а) большой размер ( одежды); б) воен. дополнительный рост ( обмундирования)
extra allowance /discount/ - ком. особая скидка [ср. тж. 1, 1)]
extra duty - воен. наряд вне очереди
extra excitation - мед. перевозбуждение
extra risks - страх. особые риски
3. высшего качества4. спец. лишний, избыточный3. [ʹekstrə] advособо, особенно; отдельно; дополнительноto work extra - работать, сверхурочно
-
11 extra
1. [ʹekstrə] n1. 1) часто pl особая плата, приплата; наценкаno extras - без всяких приплат (в объявлениях гостиниц означает, что услуги, отопление и т. п. включаются в цену номера)
to pay a little extra to a chauffeur [for a larger room] - немного приплатить шофёру [за большую комнату]
2) что-л. предоставляемое за дополнительную платуthe school fees are £10 a term, singing and dancing are extras - обучение в школе стоит 10 фунтов в семестр, за уроки танцев и музыки взимается особая плата
2. экстренный выпуск ( газеты)3. высший сорт; сорт экстра4. амер. разг. временный, сезонный рабочий2. [ʹekstrə] aa new car equipped with many extras - новый автомобиль с массой дополнительных приспособлений
1. 1) добавочный, дополнительныйextra edition - а) дополнительный тираж ( газеты); б) экстренный выпуск
extra pay - а) дополнительная оплата; б) добавочный оклад
extra period /time/ - спорт. добавочное /дополнительное/ время
extra player - кино, театр. статист; статистка; актёр массовки
extra allowances - воен. добавочное денежное довольствие [ср. тж. 2]
extra fare /messing/ - воен. дополнительное питание
extra nutrition - с.-х. подкормка
2) подлежащий особой оплатеroom service is extra - за подачу еды и напитков в номера взимается дополнительная плата
2. особый, специальный; экстраординарныйextra size - а) большой размер ( одежды); б) воен. дополнительный рост ( обмундирования)
extra allowance /discount/ - ком. особая скидка [ср. тж. 1, 1)]
extra duty - воен. наряд вне очереди
extra excitation - мед. перевозбуждение
extra risks - страх. особые риски
3. высшего качества4. спец. лишний, избыточный3. [ʹekstrə] advособо, особенно; отдельно; дополнительноto work extra - работать, сверхурочно
-
12 outbid
гл.1)а) эк. предлагать более высокую цену ( чем другие участники аукциона); перебивать ценуYou have been outbid when another bidder places a bid higher than your maximum bid. — Ваша цена была перебита, когда другой участник торгов предложил цену, большую, чем ваша максимальная цена.
The bid increment is the amount by which you must outbid the current winning bid. — Шаг предлагаемой цены — это сумма, на которую вы должны превысить цену, предлагаемую текущим победителем.
б) эк. предлагать более выгодные условия ( при конкурсном размещении контрактов)The larger the contacts, the more likely outside, large contractors will be able to outbid the smaller contractors. — Чем крупнее контракт, тем больше вероятность, что крупный сторонний подрядчик сможет предложить более выгодные условия, чем меньшие по размеру подрядчики.
2) т. игр перебивать взятку ( в картах)
* * *
дать более высокое предложение по цене.* * */vt/ перекупить* * *предложить более выгодную цену (за товар) или более выгодные условия (договора) -
13 eye-watering
1) Общая лексика: значительный (обычно о денежных суммах - an eye-watering amount is extremely high or large, and much higher or larger than you would expect - http://www.macmillandictionary.com/dictionary/british/eye-watering), невероятно большой, огромный -
14 Traffic Sign Recognition
автораспознавание дорожных знаковсистема распознавания дорожных знаковЧтобы помочь водителю проверить, насколько свежа имеющаяся информация, выделенный знак постепенно затухает по мере увеличения расстояния от места нахождения знака. Водитель может также использовать систему, чтобы получить предупреждение о превышении скорости, настроив систему так, чтобы на дисплее высвечивался знак ограничения скорости, когда автомобиль превышает высвечиваемое в данный момент ограничение на установленную величину (этот порог может быть настроен водителем). * * * The system uses the digital camera to identify traffic signs on either side of the road and on bridges, providing the driver with information about the latest detected speed limit, cancellation signs and overtaking regulations via the instrument cluster display. The display can be configured to show the signs in a larger information screen, or in a smaller continuous output at the top of the display. To help the driver verify how recent the information is, the displayed sign fades away in a series of steps as the distance increases from the location of the sign. The driver can also use the system to help provide a warning about speeding, by configuring the system to flash the speed limit sign in the display when the vehicle is exceeding the currently displayed limit by a set amount (this threshold can be varied by the driver).Система использует цифровую видеокамеру, чтобы распознавать дорожные знаки по обеим стороны дороги и на мостах, снабжая водителя через дисплей комбинации приборов информацией о самом последнем обнаруженном ограничении скорости, знаках отмены и правилах обгона. Дисплей может быть настроен на показ знаков на большом информационном экране или на постоянном маленьком — в верхней части дисплея.
Англо-русский универсальный дополнительный практический переводческий словарь И. Мостицкого > Traffic Sign Recognition
-
15 bulk
-
16 mass
масса имя существительное:обедня (mass, Office of the Mass)имя прилагательное: глагол:собирать в кучу (mass, cumulate) -
17 Mass
Масса имя существительное:обедня (mass, Office of the Mass)имя прилагательное: глагол:собирать в кучу (mass, cumulate) -
18 aerodynamic drag
аэродинамическое сопротивление
-
[Интент]Параллельные тексты EN-RU
Larger heat exchangers reduce pressure drop on the air side lowering fan motor consumption.
[Lennox]Теплообменники большего размера имеют меньшее аэродинамическое сопротивление, что уменьшает потребляемую мощность вентилятора.
[Перевод Интент]If the pressure drop in return air duct is high, the amount of fresh actually introduced in the building can be higher than required.
[Lennox]Если аэродинамическое сопротивление рециркуляционного воздуховода большое, то расход наружного воздуха может оказаться больше требуемого.
[Перевод Интент]
Тематики
EN
Англо-русский словарь нормативно-технической терминологии > aerodynamic drag
-
19 aerodynamic resistance
аэродинамическое сопротивление
-
[Интент]Параллельные тексты EN-RU
Larger heat exchangers reduce pressure drop on the air side lowering fan motor consumption.
[Lennox]Теплообменники большего размера имеют меньшее аэродинамическое сопротивление, что уменьшает потребляемую мощность вентилятора.
[Перевод Интент]If the pressure drop in return air duct is high, the amount of fresh actually introduced in the building can be higher than required.
[Lennox]Если аэродинамическое сопротивление рециркуляционного воздуховода большое, то расход наружного воздуха может оказаться больше требуемого.
[Перевод Интент]
Тематики
EN
Англо-русский словарь нормативно-технической терминологии > aerodynamic resistance
-
20 air drag
аэродинамическое сопротивление
-
[Интент]Параллельные тексты EN-RU
Larger heat exchangers reduce pressure drop on the air side lowering fan motor consumption.
[Lennox]Теплообменники большего размера имеют меньшее аэродинамическое сопротивление, что уменьшает потребляемую мощность вентилятора.
[Перевод Интент]If the pressure drop in return air duct is high, the amount of fresh actually introduced in the building can be higher than required.
[Lennox]Если аэродинамическое сопротивление рециркуляционного воздуховода большое, то расход наружного воздуха может оказаться больше требуемого.
[Перевод Интент]
Тематики
EN
Англо-русский словарь нормативно-технической терминологии > air drag
- 1
- 2
См. также в других словарях:
raising amount of instrument — Forgery in changing the true amount of a check or other instrument for the payment of money to a larger amount. Crocker Woolworth Nat. Bank v Nevada Bank, 139 Cal 564, 73 P 456 … Ballentine's law dictionary
Inclusion Amount — An additional amount of income that a taxpayer may have to report as a result of leasing a vehicle or other property for business purposes. The inclusion amount must be reported if the fair market value of the leased vehicle exceeds a certain… … Investment dictionary
recoverable amount — /rɪˌkʌv(ə)rəbl ə maυnt/ noun the value of an asset, either the price it would fetch if sold, or its value to the company when used (whichever is the larger figure) … Dictionary of banking and finance
pregnancy — /preg neuhn see/, n., pl. pregnancies. the state, condition, or quality of being pregnant. [1520 30; PREGN(ANT) + ANCY] * * * Process of human gestation that takes place in the female s body as a fetus develops, from fertilization to birth (see… … Universalium
Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… … Universalium
mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… … Universalium
river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… … Universalium
Monetary policy — Part of a series on Government Public finance File:Governmentbhj,i,gu Vedder Highsmith detail 1.jpeg … Wikipedia
logistics — /loh jis tiks, leuh /, n. (used with a sing. or pl. v.) 1. the branch of military science and operations dealing with the procurement, supply, and maintenance of equipment, with the movement, evacuation, and hospitalization of personnel, with the … Universalium
Bicycle brake — Animation of a single pivot side pull calliper brake for the rear wheel of a steel framed road bike. A bicycle brake is used to slow down or stop a bicycle. There have been various types of brake used throughout history, and several are still in… … Wikipedia
AGRICULTURAL LAND-MANAGEMENT METHODS AND IMPLEMENTS IN ANCIENT EREẒ ISRAEL — Ereẓ Israel is a small country with a topographically fragmented territory, each geographical region having a distinctive character of its own. These regions include: the coastal plain, the lowlands, the hilly country, the inland valleys, the… … Encyclopedia of Judaism