According to preliminary reports the following happened. The 400kV line from France to CERN went down. This caused --as it should be-- the switchover to the 130kV Swiss line within 30". But then the Swiss line went down. The critical UPS (220V) stayed up and equipment powered by it was not affected. The cut brought down a unit of a 48V-system which affected some equipment.
Just for information, the computer-centre power substation is for 6 MW of power. Two high-voltage lines come directly into CERN (400kV from France and 130kV from Switzerland). If one of them fails switchover to the other occurs within 30". If both fail, diesel generators come up within 10'.
With our apologies,
Ludwig Pregernig
(phone: 022-7672666, mobile: 076-4875370)
-----Original Message----- From: swinog-bounces@lists.swinog.ch [mailto:swinog-bounces@lists.swinog.ch] On Behalf Of Jérôme Tissières Sent: 16 May 2006 14:18 To: swinog@swinog.ch Subject: [swinog] Power outage in CERN
Hi all,
It seems the CERN have (again) a power outage, but not all is down.
The hotline is not reachable... anybody have more infos ?
Thanks, Jerome _______________________________________________ swinog mailing list swinog@lists.swinog.ch http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog