-
1 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
-
2 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
-
3 behalten
v/t (unreg.)1. (festhalten, nicht hergeben) keep; darf ich das Buch behalten? may I keep the book?2. weiterhin, bes. trotz Schwierigkeiten: auch hold onto; Recht behalten be right (in the end); er hat seinen Humor behalten he hasn’t lost his sense of humo(u)r; seine gute Laune behalten keep up one’s good spirits; die Nerven behalten keep cool; Auge3. jemanden behalten keep s.o.; (Angestellte weiter beschäftigen) keep s.o. on; Freunde über Nacht bei sich behalten have friends stay overnight4. (am selben Ort lassen) keep; den Schirm in der Hand behalten keep hold of one’s umbrella; die Hände in den Hosentaschen behalten keep one’s hands in one’s pockets; etw. bei sich (Dat) behalten (Nahrung) keep s.th. down5. (aufrechterhalten) auch maintain; (Wert) retain; seine Gültigkeit behalten keep its value; die Übersicht behalten keep an overview of6. (nicht loswerden) be left with; die Narbe wird er den Rest seines Lebens behalten he’ll have the scar for the rest of his life7. im Gedächtnis: remember; MATH. (eine Zahl) carry; ich kann keine Namen behalten I’m no good at remembering names; etw. für sich behalten (Geheimnis etc.) keep s.th. to o.s.; behalt das für dich! auch keep that under your hat umg.; er kann nichts für sich behalten auch he’s a blabbermouth umg.; deine blöden Kommentare kannst du für dich behalten umg. you may keep your silly remarks to yourself; jemanden / etw. ( stets) in guter Erinnerung behalten (always) have good memories of s.o. / s.th.* * *to keep; to remember* * *be|hạl|ten ptp beha\#ltenvt irreg1) (= nicht weggeben, nicht zurückgeben) to keepbehalten Sie ( doch) Platz! — please don't get up!
jdn an der Hand behalten — to keep hold of sb's hand
der Kranke kann nichts bei sich behalten — the patient can't keep anything down
See:→ Augedie Ruhe behalten — to keep one's cool (inf)
die Nerven behalten — to keep one's nerve (Brit), to keep one's nerves under control (US)
See:→ Fassung4) (= nicht vergessen) to rememberer behielt die Melodie im Ohr — he kept the tune in his head
ich habe die Zahl/seine Adresse nicht behalten — I've forgotten the number/his address
5)(= nicht weitersagen)
etw für sich behalten — to keep sth to oneself6) (= nicht weggehen lassen) to keep; Mitarbeiter to keep onjdn bei sich behalten — to keep sb with one
einen Gast zum Abendbrot bei sich behalten — to invite a guest to stay to (esp Brit) or for supper
7) (= nicht aufgeben) Stellung, Namen, Staatsangehörigkeit to keep8) (= aufbewahren, versorgen) Kinder, Katze, Gegenstand to look after; (= nicht wegwerfen) Briefe etc to keepjdn/etw in guter/schlechter Erinnerung behalten — to have happy/unhappy memories of sb/sth
See:→ Andenken9) (= zurückbehalten, nicht loswerden) to be left with; Schock, Schaden to suffervom Unfall hat er ein steifes Knie behalten — after the accident he was left with a stiff knee
* * *2) (to have for a very long or indefinite period of time: He gave me the picture to keep.) keep3) (not to give or throw away; to preserve: I kept the most interesting books; Can you keep a secret?) keep4) (not to let go of: Keep hold of those tickets!) keep hold of* * *be·hal·ten *1. (in seinem Besitz lassen)▪ etw \behalten to keep sthwozu willst du das alles \behalten! why hang on to all this!2. (nicht preisgeben)3. (als Gast haben)ich hätte dich ja noch gern[e] länger [bei mir] \behalten I would have loved you to stay longer [with me]4. (bewahren)▪ etw \behalten to maintain sthdie Fassung \behalten to maintain one's composuredie Nerven [o die Ruhe] \behalten to keep one's nerve [or calm] [or fam one's cool5. (im Gedächtnis bewahren)▪ etw \behalten to remember sthich habe leider seinen Namen nicht \behalten sorry, I cannot remember his nameetw im Kopf \behalten to keep sth in one's head, to remember sth6. (stetig bleiben)▪ etw \behalten to keep [or retain] sthseine Form \behalten (bei Menschen) to keep in shape; (bei Kleidungsstücken) to keep [or retain] its shapeseinen Namen/seine Staatsangehörigkeit \behalten to keep [or retain] one's name/nationality7. (dort lassen, wo es ist)die Hände in den Hosentaschen \behalten to keep one's hands in one's pocketsden Hut auf dem Kopf \behalten to keep one's hat on* * *unregelmäßiges transitives Verbdie Nerven/die Ruhe behalten — keep one's nerve/keep calm
2) s. zurückbehalten 2)* * *behalten v/t (irr)1. (festhalten, nicht hergeben) keep;darf ich das Buch behalten? may I keep the book?2. weiterhin, besonders trotz Schwierigkeiten: auch hold onto;Recht behalten be right (in the end);er hat seinen Humor behalten he hasn’t lost his sense of humo(u)r;seine gute Laune behalten keep up one’s good spirits;3.jemanden behalten keep sb; (Angestellte weiter beschäftigen) keep sb on;Freunde über Nacht bei sich behalten have friends stay overnight4. (am selben Ort lassen) keep;den Schirm in der Hand behalten keep hold of one’s umbrella;die Hände in den Hosentaschen behalten keep one’s hands in one’s pockets;etwas bei sich (dat)seine Gültigkeit behalten keep its value;die Übersicht behalten keep an overview of6. (nicht loswerden) be left with;die Narbe wird er den Rest seines Lebens behalten he’ll have the scar for the rest of his lifeich kann keine Namen behalten I’m no good at remembering names;etwas für sich behalten (Geheimnis etc) keep sth to o.s.;deine blöden Kommentare kannst du für dich behalten umg you may keep your silly remarks to yourself;* * *unregelmäßiges transitives Verb1) keep; keep on < employees>; keep, retain <value, expressive power, etc.>die Nerven/die Ruhe behalten — keep one's nerve/keep calm
2) s. zurückbehalten 2)3) (sich merken) remember; s. auch Recht 4)* * *v.to keep v.(§ p.,p.p.: kept) -
4 Summe
Summe f 1. FIN total; 2. GEN sum, (AE) total, aggregate, total, amount, amt; 3. STAT (AE) footing; 4. WIWI aggregate, amount, amt, total* * *f 1. < Finanz> total; 2. < Geschäft> sum, total (AE), aggregate, total, amount (amt) ; 3. < Math> footing (AE) ; 4. <Vw> aggregate, amount (amt), total* * *Summe
sum, amount, stock, value, (Gesammtsumme) total;
• bis zu einer Summe von up to an amount of;
• in einer runden Summe in round figures;
• abgerundete Summe amount rounded up;
• ansehnliche Summe important sum;
• ausgesetzte Summe amount allowed, granted amount;
• bedeutende (beachtliche, respektable) Summe respectable amount;
• berechenbare Summe liquidated sum;
• bestimmte Summe given (definite) sum;
• doppelte Summe double the amount;
• einbehaltene Summe amount retained;
• eingeklagte Summe face of a judgment;
• einmalige Summe lump sum;
• errechnete Summe sum arrived at;
• fällige Summe amount due;
• fehlende Summe missing amount, deficit, deficiency;
• doppelt gebuchte Summe amount entered twice;
• geringfügige Summe paltry amount, insignificant sum;
• gesamte Summe total amount;
• geschuldete Summe sum payable, amount owing;
• glatte Summe good round sum;
• große Summe large (considerable) amount, a king’s ransom;
• hinterlegte Summe deposited amount;
• kleine Summe pittance;
• notwendige Summe requisite money;
• präzise Summe exact sum;
• restliche Summe residual amount;
• überschüssige Summe surplus, amount in excess;
• überwiesene Summe remittance;
• veranschlagte Summe estimated amount;
• verfügbare Summe amount at disposal;
• zu zahlende Summe contents;
• Summe der Aktiva total assets;
• volle Summe einer Forderung principal and charges;
• Summe abführen to pay over a sum;
• von einer Summe abgehen to be deducted from a sum;
• Summe abrunden to round off a sum;
• Summe zur Zahlung aus der Staatskasse anweisen to make an expense payable out of public funds;
• mit einer Summe aufrechnen to settle a debt per contra;
• Summe auswerfen to allow an amount;
• beträchtliche Summe darstellen to make up a considerable amount;
• fehlende Summe ergänzen to make up the requisite sum, to make good (up) a deficiency;
• Summe guthaben to have a balance in one’s favo(u)r;
• Summe gutschreiben to credit an amount;
• Summe bei einem Dritten hinterlegen to deposit a sum in the hands of a third party;
• fehlende Summe voll machen to make up the off money (requisite sum);
• jem. eine Summe zur Verfügung stellen to place a sum at the disposal of s. o.;
• Summe überweisen to remit a sum of money;
• Summe validieren to place a sum against;
• Summe verdoppeln to double a sum;
• ungeheure Summe verschlingen to cost the earth;
• Summe ziehen to compute (run up) the total;
• Summe der Rechnungsspalten ziehen to extend an invoice;
• Summe zusammenrechnen to compute a sum.
validieren to place a sum against -
5 Erholungsfähigkeit
Erholungsfähigkeit
(Markt) buoyancy;
• Erholungspause allowed time, breather;
• [betriebliches] Erholungsprogramm [company] recreational program(me);
• noch keine wirkliche Erholungstendenz erkennen lassen to have yet to show any significant improvement;
• Erholungsurlaub holiday, vacation (US), (Krankheitsurlaub) sick leave;
• bezahlter Erholungsurlaub paid sick leave;
• Erholungsverkehr recreational traffic;
• Erholungswert recreational value;
• deutlich sichtbare Erholungszeichen aufweisen to show tangible signs of recovery;
• Erholungszuschlag (Fertigungssteuerung) fatigue allowance.
См. также в других словарях:
allowed value — leidžiamoji vertė statusas T sritis automatika atitikmenys: angl. allowed value; permitted value vok. zulässiger Wert, m rus. разрешенное значение, n pranc. valeur admissible, f; valeur légale, f; valeur permise, f … Automatikos terminų žodynas
allowed value — leidžiamoji vertė statusas T sritis fizika atitikmenys: angl. allowed value vok. zulässiger Wert, m rus. дозволенное значение, n; допустимое значение, n; разрешённое значение, n pranc. valeur admise, f; valeur admissible, f … Fizikos terminų žodynas
Allowed value — Допустимое значение … Краткий толковый словарь по полиграфии
Value Added Tax-free Exports from the Channel Islands — are exports of goods from the Channel Islands on which value added tax (VAT) is not levied. In recent years, companies in the United Kingdom have expressed concern at the competition thereby offered to their goods on which VAT is… … Wikipedia
Value change dump — is an ASCII based format for dumpfiles generated by EDA logic simulation tools. The standard, four value VCD format was defined along with the Verilog hardware description language by the IEEE Standard 1364 1995 in 1995. An Extended VCD format… … Wikipedia
Value added tax — Taxation An aspect of fiscal policy … Wikipedia
Value over replacement player — In baseball, value over replacement player (or VORP) is a statistic invented by Keith Woolner that demonstrates how much a hitter contributes offensively or how much a pitcher contributes to his team in comparison to a fictitious replacement… … Wikipedia
Value Added Tax in Madhya Pradesh — MADHYA PRADESH VALUE ADDED TAX ACTVAT Tax payable on value addition. Value Addition is not profit it is difference between sale prices and purchase price.METHODS OF CHARGING VAT1. Subtraction Method In this method tax is charged on difference of… … Wikipedia
value domain — noun The set of allowed values for a data element … Wiktionary
permitted value — leidžiamoji vertė statusas T sritis automatika atitikmenys: angl. allowed value; permitted value vok. zulässiger Wert, m rus. разрешенное значение, n pranc. valeur admissible, f; valeur légale, f; valeur permise, f … Automatikos terminų žodynas
Market value — For values of entire markets, see Market size. Market value is the price at which an asset would trade in a competitive auction setting. Market value is often used interchangeably with open market value, fair value or fair market value, although… … Wikipedia
