On Fri, 2011-06-10 at 19:26 +0200, Emanuel Rumpf wrote: > 2011/6/10 Ralf Mardorf <ralf.mardorf@xxxxxxxxxxxxx>: > > > > IIUC houses that were build after the second world war should be > > pre-protected, but houses that are older could be without any > > pre-protection. The later a house was build, the better the > > pre-protection and without pre-protection as far as I understand, those > > devices are completely useless. > > > > How do the safety connectors work ? > AFAICT they separate the equipment from the over-voltage source. > Supposing this happens fast enough and the separation is high-voltage save, > how should an over-voltage still be able to harm your equipment ? > I would conclude: It can't. > > > > > 'Perhaps' next week or so, I'll do some more research. > > > Let's know, if you figure out. For all German readers: http://de.wikipedia.org/wiki/%C3%9Cberspannungsschutz For English readers: One major issue is that those protections simply discharge against the protective earthing conductor. An overvoltage caused by a lightning comes with high voltage and a very quick pulse. I guess this at first is relevant regarding to the issue, I guess strength of electric current isn't that relevant. The discharging might not be able to really discharge. The web page that gives information currently isn't available: http://www.dke.de/de/Service/Installationstechnik/Seiten/Errichtungsnormenf%C3%BCr%C3%9Cberspannung-Schutzeinrichtungen.aspx Again, I don't have knowledge, but it seems to be a mojo does protect as good as a 'usual' lightning protection does. Regards, Ralf _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
