Earth fault loop impedance testing - ZS

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  • Опубликовано: 30 окт 2024

Комментарии • 29

  • @Ibrahim-vt2tz
    @Ibrahim-vt2tz 4 месяца назад +1

    Thanks Mike
    Brilliant explanation
    You are great ❤❤❤❤❤❤ thank you. God bless you

  • @pinchermartyn3959
    @pinchermartyn3959 Год назад

    Excellent run through of what it is. Thanks

  • @staypufttechtank
    @staypufttechtank Год назад +1

    Thanks for run through - nice video, well explained!

  • @corymac
    @corymac Год назад +1

    Great video as always Mike 👍🏼

  • @gordonkerr6740
    @gordonkerr6740 9 месяцев назад

    Thank you. That was very well presented. Well done you. Infact first class.

  • @looking9175
    @looking9175 Год назад +2

    I think with your tester doesn't have to be a 3 lead test for low. Easier to use 2 lead low. Just change setting with F1 button.

  • @TheHomeent
    @TheHomeent Год назад

    Great content as usual.
    Keeping things simple, thinking about a teaching career when you're too old to be on the tools?
    Honestly if you lost any one then they need to go back to class. Best info for me was the quick summary on the fact different testers call it different things but the basics of hi and low (trip and no trip) and that most require 3 wire test on low.

  • @SSSwilliams
    @SSSwilliams 10 месяцев назад

    Can I test Zs on a lighting circuit with led fitting which lit up? Cheers

  • @electrician247
    @electrician247 Год назад

    The most important test 🙌❤

  • @sajeevipiumika4033
    @sajeevipiumika4033 6 месяцев назад

    Is this for TT system?

  • @kyledixon3464
    @kyledixon3464 Год назад

    Very good videos

  • @thomassparling5956
    @thomassparling5956 Год назад

    Brilliant 👏 thanks 👌🏻

  • @miezankacou3455
    @miezankacou3455 Год назад

    I really appreciate

  • @PHealey1981
    @PHealey1981 Год назад

    What’s the motor whirring in the background?

    • @PHealey1981
      @PHealey1981 Год назад

      Sorry for going off the point, little Schneider VFD’s in that panel or softstarts?

    • @PHealey1981
      @PHealey1981 Год назад

      @@residualelectrical noo, don’t apologise.
      Loop testing description whilst in a panel is my jam mate. 😆😆😆👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻

  • @ELECTRICLIFE4U
    @ELECTRICLIFE4U Год назад

    👍👍👍👍👍

  • @electricalservicesmaroc
    @electricalservicesmaroc Год назад

    Pro ❤❤🎉🎉

  • @three-phase562
    @three-phase562 Год назад +1

    Sorry, but stating that impedance and resistance are the same isn't the best approach in my opinion.
    Impedance is resistance to AC current and the resistance value is purely the DC component. From your distribution board out along the final circuit which is just a cable, then yes, the impedance and resistance will be the same as the cable has no reactive component to it. That is why it is just measured with a resistance meter.
    However, as you go back into the DNO supply from the distribution board and come to the transformer secondary winding, that does have both a resistive and a reactive element and the two added together will give the impedance. It therefore, must be measured with an AC Test Current.
    If you measured the the DC resistance of the earth loop, you would get a lower value than if you measured the impedance value. The impedance value is more reflective of the actual fault current, where as the DC loop measurement would give a higher fault current, that the system would not be able to supply in reality.

    • @TheHomeent
      @TheHomeent Год назад

      If it wasn't "basically" the same how could you add R1 and r2 to Ze.
      Yes Z is a measurement of resistance at a given frequency, but a straight run of copper should have negligible difference between Z and R, now a motor winding or an indicator coil or anything that produces a reasonable magnetic field then Z is greatly affected in relation to R.

  • @gino2465
    @gino2465 Год назад

    No volume

    • @gino2465
      @gino2465 Год назад

      @@residualelectrical appoligies it was connected to my car . Dah

  • @eddtheduck
    @eddtheduck Год назад

    Why would be listen to you when you’ve only ever installed 1 earth rod?

  • @tombarrett1487
    @tombarrett1487 Год назад

    1st view!