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Recent content by jairo

  1. jairo

    Circuit Breaker Test Sets

    Hi I work at a utility in Colombia and we have a tester AVO MULTIAMP OCR-8015-C
  2. jairo

    Relay equipment Test

    What is the best between Omicron 256 and ISA DRTS 6
  3. jairo

    Rescloser Settings

    You have to know when closer will be as another fault or the same fault
  4. jairo

    Instantaneus ground setting

    If I set the ground tap = 0.3 I phases and the instantaneous is set to 30 times but the max setting at the relay is 20 times. Is a good practice set the ground tap in a bigger value (0.6 In ) and then set the instantaneous to 15 times for use the instantaneous setting? Thanks Jairo
  5. jairo

    Transformer differential protection

    Are you sure that The transformer is energized phase R - U ; S -V and phase T to W because under other circunstances the transformer is DYn1 and you have problems if this is the problem you can change the settings and set the relay to DYn1
  6. jairo

    Maloperation of auto-reclosing feeder CB

    I live in Colombia and excuse me by my english. We have the same F4 controls I´m agree with DPC and we had problems with downstream faults but the force between conductors make a fault upstream; this new fault is only view by the upstream protection. If you don´t understand me I will try to...
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