By Dipl.-Ing. Friedrich Nettel (auth.)

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Extra info for Comparison of Principal Points of Standards for Electrical Machinery (Rotating Machines and Transformers)

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I ° I '+ 5. s with agricultural rating , For the purposes of Heating Test the 60°10 overload is considered as rated Ioad, The 100 % overload heating test is started with the Transformer on constant rated load temperature and continued until the attainment of a steady temperature but not Ion ger than 12 hours. Nett c I. ComparisoD. 3 Se ction II . 34 Continuation: Heating. A. Britain Germany c) Methods of measurement of Temperature of the cooling media. I I For I. Transformer witb air- cooling Tbe a ir The value to be adop(se lf-c oo ling), temperature .

Us to rat e oil cooler which its elf is forced be measured air cooled and forced oil circulation. by a thermoThe temp. air. inle t taken during the last q uarter comm g of th e test period. For water cooled types: Wat er-cooled r» . The temp, ri se shaIl be based 8. Witb indiv id ual parts only cooled. entirely upon the temp, Win din gs no t immersed. of the coolin g water. Oil-imme rsed,coole r insideoftank. under ass umed sta nda r d 10. Oll-immersed , cooler outs ide of conditions (wa t er 25 0, tank and forc ed oil circulation.

Von E. Arnold. Zweite, vollständig umgearbeitete Auflage. Mit 463 Textfiguren und 5 Tafeln. IV. Die synchronen Wechselstrommaschinen. Generatoren . Motoren und Umformer. Ihre Theorie. Konstruktion, Berechnung und Arbeitsweise. Von E . Arnold und J. L. la Cour. Zweite, voll ständig umgearbeitete Auflage. Mit 530 Textfiguren und ,8 Tafeln . v. Die asynchronen Wechselstrommaschinen. I. Teil : Die Induktionsmaschinen. Ihre Theorie, Berechnung, Konstruktion und Arbeitsweise. Von E. Arnold und J. L. la Cour unter Mitarbeit von A.

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