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Agilent Technologies Troublesh
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2010-08-17
张燕
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Common Causes of Motor Failure
Motor failure can be caused by various electrical or mechanical conditions.
Based on motor manufacturers’ analysis, about 44% of motor failure problems
are related to heat resulting from overloads and single phasing. The overheating
problem reduces motor winding insulation life by half for every 10 ˚C increase
in winding temperature. In other words, operating a motor at 10 ˚C above its
maximum temperature rating will reduce its expected life expectancy by 50%.
Motor failure can be caused by various electrical or mechanical conditions.
Based on motor manufacturers’ analysis, about 44% of motor failure problems
are related to heat resulting from overloads and single phasing. The overheating
problem reduces motor winding insulation life by half for every 10 ˚C increase
in winding temperature. In other words, operating a motor at 10 ˚C above its
maximum temperature rating will reduce its expected life expectancy by 50%.
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