-
1 Nummer
Nummer f STAT number • auf Nummer sicher gehen GEN be on the safe side, play safe* * ** * *Nummer
number, mark, (Abkommen) subitem, (Fabriknummer) serial, (Größe) size, (Zeitung) issue, copy;
• in einzelnen Nummern serially, in serial parts;
• Nummern (Zinsnummern) decimals (Br.);
• Nummer besetzt (tel.) engaged, line busy (US);
• bestimmte Nummer (Auto) distinctive number;
• falsche Nummer wrong number;
• frühere Nummer back number (issue);
• laufende Nummer running (serial, progressive) number;
• nächstgrößere Nummer next in size;
• schwarze Nummern (Zinszahlen) black products;
• unbenutzte Nummer dead number;
• Nummer des Arbeitsausweises works number;
• rote Nummer [des Autoverkäufers] dealer’s license number (US);
• Nummer des Postzustellbezirks postal district number;
• Nummer des abgetretenen Wagnisses (Rückversicherung) cession number;
• Nummer des statistischen Warenverzeichnisses statistical code number;
• neue Nummer einer Zeitschrift most recent issue of a magazine;
• vereinzelte Nummern einer Zeitschrift odd numbers;
• Nummer angeben to give a reference number;
• nach fortlaufenden Nummern geordnet sein to be arranged numerically;
• falsche Nummer wählen (tel.) to dial a wrong number;
• Nummer zuweisen to assign a number. -
2 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
-
3 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
См. также в других словарях:
Progressive Conservative Party of Canada — Parti progressiste conservateur du Canada Former federal party Founded December 10, 1942 … Wikipedia
Progressive country — is a subgenre of country music started in the early 1970s in Austin, Texas. The term was coined by programmers at Austin s KOKE FM in 1972 as a way to differentiate the style of country music in Austin from that being made in Nashville.… … Wikipedia
Code of Personal Status (Tunisia) — The Code of Personal Status (CPS) (Arabic: مجلة الأحوال الشخصية) is a series of progressive Tunisian laws aiming at the institution of equality between women and men in a number of areas. It was promulgated by beylical decree on August 13, 1956… … Wikipedia
Progressive collapse — A building undergoes progressive collapse when a primary structural element fails, resulting in the failure of adjoining structural elements, which in turn causes further structural failure, similar to a house of cards. Contents 1 Timeline of… … Wikipedia
Progressive Graphics File — Infobox file format name = PGF extension = .pgf mime = owner = xeraina GmbH creatorcode = type = wavelet based bitmapped image format container for = contained by = extended from = extended to = PGF (Progressive Graphics File) is a wavelet based… … Wikipedia
Code des marchés publics (France) — En droit français, le code des marchés publics est le code regroupant les procédures que les administrations françaises et les collectivités locales doivent respecter lorsqu ils passent une commande de biens ou de services. Les procédures d… … Wikipédia en Français
Progressive Trance — Trance (engl.: [tɹæns]) ist eine Form der elektronischen Tanzmusik, die sich in den 1990er Jahren vom härteren Techno abspaltete und sich mehr nach den der Harmonik entsprechenden Akkorden und Melodien bei einem Tempo von rund 125−148 BPM richtet … Deutsch Wikipedia
progressive tax — Tax levied at a rate that increases as the quantity subject to taxation increases. Designed to collect a greater proportion of tax revenue from wealthy people, progressive taxes reflect the view that those who are able to pay more should carry a… … Universalium
Code of Ethics (band) — This article is about a Christian rock band. For actual codes of ethics, see ethical code. Code of Ethics Years active 1991 – 2001, 2008 – present Labels R.E.X. Music Forefront Records … Wikipedia
Code de conduite (entreprise) — Dans le monde de l entreprise, un code de conduite est une déclaration officielle des valeurs et des pratiques commerciales, parfois élargie aux fournisseurs de l entreprise. Le code formalise un certain nombre de principes d actions et de normes … Wikipédia en Français
Code of Indian Offenses — What follows is the literal text of the Code of Indian Offenses. R U L E S GOVERNINGTHE COURT OF INDIAN OFFENSES DEPARTMENT OF THE INTERIOR, OFFICE OF INDIAN AFFAIRS,Washington, March 30, 1883.SIR: Your special attention is directed to the… … Wikipedia
