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  1. MissMe

    Limiting cuurent harmonics

    I've been trying to find some solid information on current harmonics emission limits in MV networks in IEC papers. I am aware of series IEC 61000-3, but there aren't no firm values for MV networks as there are in IEEE 519. Or maybe I am wrong? I am grateful for any information.
  2. MissMe

    CBEMA / ITIC curve (50 Hz)

    As far as I know, original CBEMA/ITIC curve is used for equipment with rated voltage 120 V and frequency 60 Hz. Can I apply this curve on equipment rated 230 V/50 Hz as the values are given in percentage? Or is there another version of this curve that is ment fo 50 Hz equipment? Tnx.
  3. MissMe

    Who, when and why established standard 50 (or 60 ) Hz?

    Hello, all! I was trying to find the answer to the question in a subject on some official pages (CENELEC, IEC...) but I didn't get any response. I hope some of you know the answer to the question who, when and why decided that standard value of network frequency should be 50/60 Hz? I'm more...

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