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- Derating is the technique employed in power electrical and electronic devices wherein the devices are operated at less than their rated maximum power dissipation taking into consideration the case/body temperature, ambient temperature and the type of cooling mechanism used.
Own research - by STAMATIOS FASSOULAKIS
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- οι ηλεκτρονικές συσκευές έχουν μέγιστη απόδοση σε κάποια θερμοκρασία. Όσο η θερμοκρασία αυξάνεται η απόδοση ελαττώνεται δηλαδή η ικανότητά τους υποβιβάζεται π.χ. αν ένα εξάρτημα έχει 100watt απόδοση στούς 25C στούς 65C θα έχει 40watts απόδοση. - wikipedia by STAMATIOS FASSOULAKIS
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Compare [close] - Italian
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- Riduzione della capacità di generare potenza utile di una macchina rispetto alla potenza nominale, dovuta al discostarsi delle condizioni operative dalle condizioni di riferimento (o nominali). Esempi di fattori che influenzano maggiormente il declassamento di una macchina: variazione della temperatura, pressione, umidità del fluido di servizio o del fluido di scambio termico, esercizio della macchina in funzionamento diverso da quello di progetto (continuo, intermittente, con parametri elettrici non nominali, etc).
Nei testi specialistici si può trovare anche non tradotto. Own research - by pcs_MCIL
- Example sentence(s)
- POTENZA E DECLASSAMENTO
Il valore di potenza indicato e' il massimo disponibile durante una sequenza di potenza variabile (PRP Prime Power) ISO Standard 8528.1 ed e' garantito con una tolleranza di + / - 5% , a motore rodato.
Questo valore si riduce del:
* 1% ogni 100 Mt. di altitudine
* del 2% ogni 5°C al di sopra dei 20°C
* del 10% per un utilizzo continuativo a carico costante (COP Continuous Power) ISO Standard 8528.1. - WFM generators by pcs_MCIL
- Problemi di altra natura
possono insorgere invece quando il gruppo elettrogeno viene utilizzato in
ambienti dove i valori di temperatura, altitudine e umidità relativa sono più
alti rispetto a quelli di riferimento. È questa una condizione spesso sottovalutata.
La presenza delle suddette condizioni ambientali comporta un declassamento
della massima potenza erogabile dalla macchina, tanto più accentuato,
quanto più i valori si scostano da quelli di riferimento. In - rivista Attualità Elettrotecnica by pcs_MCIL
- Per quanto riguarda il derating o in italiano "declassamento", le norme impongono per la classe B, ad una temperatura ambiente max. di 40°, una temperatura max degli avvolgimenti di 110°, mentre per la classe F, 145°. - PLC forum by pcs_MCIL
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Compare [close] - German
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- Lastminderung (Unterlastung)
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- Lastminderung (derating) Auch: Unterlastung. Das Anpassen eines Betriebsparameters an extreme Betriebsbedingungen, zum Beispiel das Begrenzen der Leistungsaufnahme ab Erreichen einer bestimmten Umgebungstemperatur. Elektroniknet - by John Jory
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- Damit die Eigentemperatur (Summe aus Umgebungstemperatur und verlustleistungsbedingter Obertemperatur) die Grenztemperatur nicht überschreitet, muss ab einer Umgebungstemperatur von 70 °C die Verlustleistung entsprechend reduziert werden. Diese notwendige Verlustleistungsreduzierung wird auch als ..Derating" bezeichnet. Sie wird in den Datenblättern in Form einer Deratingkurve angegeben. - Google books by John Jory
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Compare [close] - Thai
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- การเลือกใช้อุปกรณ์ไฟฟ้า เช่น สายไฟฟ้า หรือสวิทซ์ตัดตอน จะต้องคำนึงถึงค่าตัวแปรซึ่งจะถูกปรับลดค่าลง (Derating) จากลักษณะการติดตั้ง หรือผลจากอุณหภูมิโดยรอบ เช่น การติดตั้งในกล่องหรือบริเวณที่ทึบ ค่าตัวแปรที่สามารถใช้งานได้จะมีค่าน้อยกว่าค่าพิกัดที่กำหนด Own research - by kong
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- สายไฟฟ้าที่เดินในท่อร้อยสายจะมีความสามารถในการนำกระแสได้น้อยกว่าการเดินในอากาศ โดยทั่วไปพิกัดการทนกระแสที่แสดงใน ตารางสาย จะใช้กับจำนวนสายในท่อไม่เกิน 3 เส้นเท่านั้น ถ้ามากกว่านี้ความสามารถในการทนกระแสก็ยิ่งลดลง ซึ่งเป็นไปตาม ค่าตัวคูณลดพิกัดกระแส (Derating Factor) - Nectec Webbase Learning by kong
- ตัวคูณลดพิกัด (derating factor) (ถามี). −. วิธีการประกอบ. −. ความจําเปนในการตรวจสอบการทํางานภายหลังการประกอบเพื่อทวนสอบการทํางานทางกล ... - Thai Industrial Standards Institute by kong
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Compare [close] - Chinese
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- unit derating
星期日, 11/16/2008 - 12:01 — administrator unit derating
全称
降低装置的额定值
定义
unit derating
3 定义
除下列术语外,本标准所用的其他术语及其定义见GJB 451。
3.1 降额 derating
元器件使用中承受的应力低于其额定值,以达到延缓其参数退化,提高使用可靠性的目的。通常用应力比和环境温度来表示。 中国可靠性 - by Adsion Liu
- Example sentence(s)
- We do not recommend derating halogen lamps by more than 10%. ... 只要光输出依然是充足适合应用,在所有应用,灯也许故意被降低额定值以延长它的寿命。 ... - 上海派铼兹 by Adsion Liu
- 标准中文名:, 防火电缆安载流容量降低额定值测定用工艺程序. 标准英文名:, Standard Procedure for the Determination of the Ampacity Derating of Fire-Protected ... - bzcity.net by Adsion Liu
- 2006年10月25日 ... 在污染跑道或当有最低设备清单(MEL)上规定的不可减推力起飞的故障时,必须使用全推力起飞(注:在污染跑道上可使用降低额定值法(DERATE)减推力 ... - airnews.cn by Adsion Liu
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