Motors Shelf Life
Motors Shelf Life
(OP)
I have motors that have never been used and have been in storage for approximately 15 years and would like to use them. I am looking for information or standards that apply to testing for reliability of these.





RE: Motors Shelf Life
Measure IR and PI values of the windings to start with.
If PI>2, do an ac Hipot at 1.5 times the rated voltage.
If possible, do a surge comparison test.
Do a uncoupled, spin test with reduced or rated voltage.
* The shin is the device to find your furnitures in the dark *
RE: Motors Shelf Life
I hadn't thought about the grease, but I think that edison123 has a very good suggestion there.
yours
RE: Motors Shelf Life
Test the insulation per IEEE Std 43. After 15 years on storage, replace the bearings to prevent expensive trial and error. Unless a storage program including controlled vibration, temperature, humidity and rotation of the shafts quaterly has been implemented.
RE: Motors Shelf Life
Do a search on the term "false brinelling" (also search with spelling "brinnelling" because a lot of places misspell it) to see the effect of not rotating a shaft on a regular basis.
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