nanog mailing list archives

RE: Data Center testing


From: Deepak Jain <deepak () ai net>
Date: Mon, 24 Aug 2009 18:50:13 -0400

At least once a year I like to go out and kick the service entrance
breaker to give the whole enchilada an honest to $diety plugs out test.
As you said, not recommenced if you don't maintain stuff, but that's
how
confident I feel that my system works.

Nature has a way of testing it, even if you don't. :)

For those who haven't seen this occur, make sure you have a plan in case your breaker doesn't flip back to the normal 
position, or your transfer switch stops switching (in either direction -- for example, it fuses itself into the 
"generator/emergency" position).

For small supplies (say <1MW) it's not as big a deal, but when the breakers in a bigger facility can weigh hundreds of 
pounds each and can take months to replace, these are real issues and will test your sparing, consistency and other 
disciplines.

Deepak Jain
AiNET


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