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Unfiltered Vibration In Nema Mg1


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To whom it may concern,


I'm quite confused with the term. CAn someone explain clearl...

Further, in NEMA there is " rotational frequency" (60 30 20 15 12, etc) for certain vibration levels...I know about 60Hz and 50 Hz but what about 30, 20, 15, 12?...they are under the column for rotational frequency..can someone explain me this" rotational frequency" .........



please refer to NEMA Part 7, Page 9 Mechanical Vibration Part 7, Page 9.



Best Regards,



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