Transcription of Technical Guide No. 102 - ABB
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Technical Guide No. 102 - ABB
Technical Guide No. 102. Effects of AC Drives on Motor Insulation - Knocking Down the Standing Wave A Guide to understanding installation concerns and analyzing the use of motors with AC Drives below 600 VAC . Technical Guide : The discussion, illustrations, charts and examples given in this article are intended solely to illustrate the theory and application of drive technology. Because of the many variables and requirements of applications, ABB Industrial Systems, Inc. cannot assume responsibility or liability for actual use based on the content of this article. Reproduction of any information in this article is prohibited without permission from ABB Industrial Systems, Inc. 1997 ABB Industrial Systems, Inc.
drives, as are most AFDs available today. Figure 1 illustrates the basic principles of an ABB PWM drive. The rectifier converts input line power, which has a nom-inally fixed voltage and frequency, to fixed voltage DC power. The fixed voltage DC power is then filtered to reduce the ripple voltage resulting from the rectifi-cation of the AC line.
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