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  1. jda1

    Electrical frequencies found whilst recording vibration

    My apologies for the long winded question. And many thanks in advance for any help you may be able to give me When analysing vibration spectra on electric motors, I am finding responses @ 100-200 & 300 Hz 2-4&6 times UK AC line frequency. i know soft foot or sprung foot can cause this dur to...
  2. jda1

    List of tests for electric motors

    Can anyone help? My son is starting an apprentiship with a motor repair company, and would like to know where he can get fairly detailed explanations of tests such as PI-DA etc. thanks in anticipation

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