AFCI

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  • gogu_ologu
    Membru marcant
    • 11.nov.2006
    • 421

    AFCI

    Our apologies. The page you are looking for may have been removed, had its URL changed, or is temporarily unavailable.  To keep looking, you may want to:  Use the Search box at the top of the page Try our site map below contact us directly to see if we can help info@cpsc.gov (800) 638-2772 -- Mon to Fri. 8:00 AM to 5:30 PM or leave a message at any time.  @USCPSC on Twitter

    Se gaseste asa ceva pe la noi?
  • DIY
    Living Legend
    • 07.sep.2007
    • 1736

    #2
    Re: AFCI

    Postat în original de gogu_ologu
    http://www.cpsc.gov/CPSCPUB/PUBS/afcifac8.pdf
    Se gaseste asa ceva pe la noi?
    Nu cred ca se gasesc: produsul prezentat mai sus este pentru 110V si 208V

    Acum, serios, uite-aici:

    Limitations
    AFCI breakers are notorious for nuisance tripping. Great idea that is unreliable. Electricians have been reporting this to underwriters. I will cite specific examples: 1. Siemens manufactures a "less sensitive" version for use in auto shops due to nuisance tripping. 2. Instances of dedicated lines serving items such as brand new air conditioners and vacuum cleaners will nuisance trip when AFCI breakers are in use. 3. Nextel "chirping" phones are documented to cause nuisance tripping. This post has been "mysteriously" deleted - likely by those who know this to be the truth but who have a financial stakes here, but I will continue to educate the public about this technology which is theoretically a great idea, but practically - IT DOESN'T WORK! Even AFCIs, however, do not provide protection against all of the possible circuit faults that could ignite a fire. In particular, they provide no special protection against so-called "glow faults" where a relatively low-resistance short circuit draws a modest amount of current (within the trip limits of the circuit breaker) but heats the localized area of the fault to red heat. Glow faults also can occur where a connection in series with a load suddenly develops a high resistance; this might be the result of a now-defective switch, socket, plug, or wire connection (series faults are also commonly observed in aluminum wire junctions). No practical circuit breaker could detect either such fault as there is no measurable characteristic that any circuit breaker could employ to distinguish a glow fault from the normal operation of a branch circuit.
    sursa: http://en.wikipedia.org/wiki/Arc-fau...it_interrupter


    Numai bine,
    DIY

    Comentariu

    • Mircea_G
      Living Legend
      • 14.ian.2007
      • 12086

      #3
      Re: AFCI

      Postat în original de DIY
      Postat în original de gogu_ologu
      http://www.cpsc.gov/CPSCPUB/PUBS/afcifac8.pdf
      Se gaseste asa ceva pe la noi?
      Nu cred ca se gasesc: produsul prezentat mai sus este pentru 110V si 208V

      Acum, serios, uite-aici:

      Limitations
      AFCI breakers are notorious for nuisance tripping. Great idea that is unreliable. Electricians have been reporting this to underwriters. I will cite specific examples: 1. Siemens manufactures a "less sensitive" version for use in auto shops due to nuisance tripping. 2. Instances of dedicated lines serving items such as brand new air conditioners and vacuum cleaners will nuisance trip when AFCI breakers are in use. 3. Nextel "chirping" phones are documented to cause nuisance tripping. This post has been "mysteriously" deleted - likely by those who know this to be the truth but who have a financial stakes here, but I will continue to educate the public about this technology which is theoretically a great idea, but practically - IT DOESN'T WORK! Even AFCIs, however, do not provide protection against all of the possible circuit faults that could ignite a fire. In particular, they provide no special protection against so-called "glow faults" where a relatively low-resistance short circuit draws a modest amount of current (within the trip limits of the circuit breaker) but heats the localized area of the fault to red heat. Glow faults also can occur where a connection in series with a load suddenly develops a high resistance; this might be the result of a now-defective switch, socket, plug, or wire connection (series faults are also commonly observed in aluminum wire junctions). No practical circuit breaker could detect either such fault as there is no measurable characteristic that any circuit breaker could employ to distinguish a glow fault from the normal operation of a branch circuit.
      sursa: http://en.wikipedia.org/wiki/Arc-fau...it_interrupter


      Numai bine,
      DIY
      ................. Daca tu ai inteles ceva ......ca eu n-am inteles ultimele doua cuvinte ....serios !!!
      Instalatii verificari-revizii gaze

      Comentariu

      • gogu_ologu
        Membru marcant
        • 11.nov.2006
        • 421

        #4
        Re: AFCI

        1. Evident, era vorba de produse pt 230V... asta vreau

        2. E normal sa dea multe false-positive pentru ca nu e asa usor ca la sigurante. Sunt sigur ca sunt la inceput.

        Totusi, se gasesc?

        Ce alte masuri de siguranta mai sugerati in afara de cele pe care le-am listat acum cateva zile?

        La urma urmei, AFCI nu ma intereseaza prea mult, deoarece voi avea instalatia noua.

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