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. All Rights Reserved ii Contents .. Page Introduction.. 2. PWM Adjustable Frequency Drives .. 3. Motor Insulation Systems.
temperature, its lifetime will be shortened in proportion to the level and duration of the excess temperature. The insulation may last longer than the rated lifetime if its temperature remains below the rated level for significant periods of time. Figure 4 shows the relationship of insulation life versus temperature normalized at 25°C (100% life).
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