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Do-It-Yourself (DIY) Question & Answer Forum
A Thought Experiment
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<blockquote data-quote="Technician" data-source="post: 350074" data-attributes="member: 15198"><p>I did read something many years ago about drying out motors</p><p></p><p>using welders or MG sets as welders. The nature of the note</p><p></p><p>was more cautionary than procedural because the originator</p><p></p><p>clearly knew it went on and that damage had been done.</p><p></p><p>Assuming that the motor coils are intact a small heating current</p><p></p><p>could be passed between any two terminals, monitored of course.</p><p></p><p>After removal of the connections the motor coil resistance could</p><p></p><p>be measured. If two sets of coils have heated up, it is in star.</p><p></p><p>If only one, then it is in delta.</p><p></p><p>Some would say that this flies fully in the face of acceptable</p><p></p><p>practice but I have heard of this method being used to find the</p><p></p><p>temperature rise of the winding in the motor stator provided</p><p></p><p>that the room temperature resistance has been measured.</p></blockquote><p></p>
[QUOTE="Technician, post: 350074, member: 15198"] I did read something many years ago about drying out motors using welders or MG sets as welders. The nature of the note was more cautionary than procedural because the originator clearly knew it went on and that damage had been done. Assuming that the motor coils are intact a small heating current could be passed between any two terminals, monitored of course. After removal of the connections the motor coil resistance could be measured. If two sets of coils have heated up, it is in star. If only one, then it is in delta. Some would say that this flies fully in the face of acceptable practice but I have heard of this method being used to find the temperature rise of the winding in the motor stator provided that the room temperature resistance has been measured. [/QUOTE]
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A Thought Experiment
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