On October 24, 2003 12:43 am, KevinO wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > John Wilson wrote: > > Dunno what Fox was on about but you can no more get a voltage spike from > > solar flares than you can from making tea. :-) > > The 6 million customers of the Hydro-Quebec power system in Canada that > lost their power in March of 1989 would tell you otherwise. > > (Too much DC current and/or voltage can damage a 60Hz system) > > - -- > KevinO > > If Microsoft built cars, If you were involved in a crash, you would have > no idea what happened. > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.0.7 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iD8DBQE/mNg9WOfRC7Rnmv8RAss6AJ9JqHtB4V0ujuRegQ/amv2JNUeaVQCdGodi > XzLqfItujd/7aJ+W5TFWRmw= > =p3Yo > -----END PGP SIGNATURE-----
Actually, this clobbered source dams and generating stations in the north of Quebec which cascaded south. I do agree that too much DC will damage AC though the direct cause was too much DC on generated power at the speed of the turbines before being stepped down. (It might have been the step down that was messed up, I really can't remember.) Either way, the odds of a DC spike getting by the transformers on the pole and down the drop are slight. It's more likely to blow the transformer up. :-) One of the reasons that Hydro Quebec wasn't affected by this summer's blackout is the steps they took to avoid another incident like this. Thanks for the correction. :-) ttfn John
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