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  • Users: oldbeau44
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  1. oldbeau44

    Motor Overloads / Maintenance Testing Frequency and Standards

    Have seen this issue ( motor O/L testing ) generally discussed in past threads, but no detailed info on frequency and what standards (NEC, IEC, etc.) apply. Could you advise where I might find IEEE / NEC / IEC, or other standards covering O/L testing and/or calibration. We have Motor Control...
  2. oldbeau44

    5kV Bus Hipot Leakage Current

    An old Mechanical in need of help... I have written a spec to cover inspection and DC hipot testing of 5kV switchger bus (excluding breakers.) 20 kV DC Hipot will only be allowed if Megger test confirms a minimum IR value of 100 Megohm at 40°C as per IEEE 43-2000. Remaining issue I need help...

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