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AFCI
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Re: AFCI
Postat în original de gogu_ologuhttp://www.cpsc.gov/CPSCPUB/PUBS/afcifac8.pdf
Se gaseste asa ceva pe la noi?
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 -
Re: AFCI
Postat în original de DIYPostat în original de gogu_ologuhttp://www.cpsc.gov/CPSCPUB/PUBS/afcifac8.pdf
Se gaseste asa ceva pe la noi?
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,
DIYInstalatii verificari-revizii gazeComentariu
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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.Comentariu
Comentariu