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  1. neilwm

    NEF, REF and BEF protection

    I have seen NEF used in the UK as a check function on 132kV transformer star points, it will prevent operation of Mesh Corner DAR ( A Unit ) when it operates. I agree with ScottyUK's description of REF and BEF.
  2. neilwm

    Calculating standing residual voltage(3V0) for 59N protection

    Hi All, I would be very interested to hear how other engineers/ utilities calculate the standing residual voltage or standing zero sequence voltage on a distribution network? I have been currently taking the approach of modelling an unbalance condition on 3 wire overhead line wood pole...
  3. neilwm

    AEG SD14E Distance Protection Relay

    Thanks ZapSib, I managed to find a SD14 and SD14a manual and interestingly it is very much written for the German market so I will as you say speak to Schneider in Germany. Thanks again,Neil
  4. neilwm

    AEG SD14E Distance Protection Relay

    Hi All, I am currently trying to modify some settings on a SD14E distance protection relay but unfortunately I have no literature for this relay. It appears to be a Phase distance relay with no Ground settings possible. I have tried the Alstom Contact Centre and Google but no joy with finding...

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