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題 名 | 三相感應電動機的溫度額定=A Temperature Rating of the Three-Phase Induction Motor |
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作 者 | 吳添保; | 書刊名 | 明志學報 |
卷 期 | 36:2 2005.01[民94.01] |
頁 次 | 頁47-53 |
分類號 | 448.2 |
關鍵詞 | 輸出容量; 額定; 銘牌; 溫升; 責務週期; Output capacities; Ratings; Nameplates; Temperature rise; Duty cycle; |
語 文 | 中文(Chinese) |
中文摘要 | 電機機械以輸出的容量表示其額定。交、直流發電機的額定以已知的原動機額定轉速和發電機的額定端電壓下的輸出仟瓦容量或仟伏安表示。交、直流電動機的額定則以外加端電壓、滿載電流和額定轉速下的轉軸輸出馬力呈現。電機機械在這些銘牌條件下工作,其溫升不致過高且機械也不會過熱。旋轉電機可以維持暫時的過載,但此暫時過載的時間不能太久。否則,將導致嚴重的過熱而使壽命減短。因此,所有的旋轉電機銘牌上,除了額定電壓、額定電流、額定頻率和額定轉速外,同時也標示容許的溫升與責務週期。 |
英文摘要 | Electric machines are rated in terms of their output capacities. Generators (ac and dc) are rated in terms of their out put kilowatt capacity (kW) or kilovolt amperes (kVA) at a given rated prime-mover speed and a rated terminal voltage. Motors (ac and dc) are rated in terms of output capacity in shaft horse-power at applied voltage, full-load current, and rated speed. When the electric machines are operated under these nameplate conditions, there is an implication that the temperate rise will not be excessive and that the machines will not overheat. While a temporary overload may be sustained, the rotating dynamos are not expected to carry sustained overload for long period. Otherwise, it will overheat badly and have a generally shorter life. Therefore, an indication is provided on all electric rotating machinery nameplates of the allowable temperature rise and duty cycle, as well as rated voltage, rated current, rated frequency, and rated speed. |
本系統中英文摘要資訊取自各篇刊載內容。