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  1. secv72

    ASEA RIS & P&B Gold Protection Relays Time/Overcurrent Characteristic

    Hi GVP, regarding the RI characteristic, I quote the following from the manual for the ABB SPAJ140 combined overcurrent and earth-fault relay: The RI-type characteristic is a special characteristic used mainly for time grading with existing mechanical relays. The characteristic is based on the...
  2. secv72

    Does anyone know where to find Ibid publications

    When citing source references the writer will often give the book or magazine name the first it is used but to save space will substitute "Ibid" for subsequent references (I think Ibid is Latin for same). So wherever Ibid appears it means the the publication has been listed already...

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