[142427] in North American Network Operators' Group
Re: Wacky Weekend: NERC to relax power grid frequency strictures
daemon@ATHENA.MIT.EDU (Paul Graydon)
Sat Jun 25 19:45:23 2011
Date: Sat, 25 Jun 2011 13:43:53 -1000
From: Paul Graydon <paul@paulgraydon.co.uk>
To: nanog@nanog.org
In-Reply-To: <4E0661E9.7040602@rollernet.us>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 6/25/2011 12:32 PM, Seth Mattinen wrote:
> On 6/25/2011 15:12, Leo Bicknell wrote:
>> I have never seen a generator that syncs to the utility for live, no
>> break transfer. I'm sure such a thing exists, but that sounds crazy
>> dangerous to me. Generators sync to each other, not the utility.
>>
> Most of these come in open, delayed, or closed transition models:
> http://www.gedigitalenergy.com/powerquality/ATSHome.htm
>
> For open and closed transitions you'll most certainly want to sync to
> utility to transition between the two. For the delayed transition model
> it'll stop at the intermediate "open" point for a configurable amount of
> time during which the load is disconnected from everything (i.e. let all
> the motors spin down first).
>
> ~Seth
>
Take a guess what the datacenter our equipment is currently hosted in
uses. Yet another reason to be glad of a datacenter move that's coming up.
