Re: Battery lifetimes RE: East Coast outage?
Thanks. A couple of people told me that the target is 8hrs for Bell Canada huts. So hopefully some power will make it there before long. Not sure how well they will prioritize what huts to charge with portable gensets. I imagine they dont of course have a portable genset for every hut out there. ---Mike At 08:00 PM 14/08/2003 -0400, Sean Donelan wrote:
Of course it varies from location to location. Generally, after 8-12 hours we will start seeing infrastructure problems as remote batteries run down. Providers will be re-charging batteries with portable generators, but predicting battery lifetimes is as much art as science. Sometimes the battery doesn't last as long as predicted.
Speaking on Deep Background, the Press Secretary whispered:
Thanks. A couple of people told me that the target is 8hrs for Bell Canada huts. So hopefully some power will make it there before long. Not sure how well they will prioritize what huts to charge with portable gensets. I imagine they dont of course have a portable genset for every hut out there.
This is the dark stepchild of the modern telco decentralization. CO's have -48v everywhere, & Diesels (or turbines) to keep their -48v strings up. Further, it used to be the LEC had a truck-mounted semi generator ready to move in case the CO one failed. But all those SONET hubs in basements, SLC's in the burbs and such -- they don't have generators. They have X hours of batteries. In the fine print, it says the LEC will have a portable generator on site before they die. That's doable if the failure is local; say a semi taking out a power pole. But given anything bigger, a citywide or bigger blackout, a regional ice storm, or whatever.... they do not have the quantity of gensets they'd need, much less the manpower to deploy AND maintain [refuel] same. Then there's the issue that generators in dark areas tend to grow legs, no matter how well nailed down. Hope you folks have flashlights.. -- A host is a host from coast to coast.................wb8foz@nrk.com & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433
Once upon a time, David Lesher <wb8foz@nrk.com> said:
But all those SONET hubs in basements, SLC's in the burbs and such -- they don't have generators. They have X hours of batteries. In the fine print, it says the LEC will have a portable generator on site before they die.
We've got BellSouth and KMC in our POP. BellSouth has batteries (because they were already there); KMC does not, but they are on our UPS. Both are covered by our generator. All of the outside cabinets I've seen BellSouth install around town (Huntsville, AL; BellSouth appears to be working hard to get all copper lines out of the COs so lots of remote fiber cabinets) in recent years have included a natural gas hookup, which I'm assuming is for an internal generator. We haven't had an extended power failure here in several years, so I don't know for sure, but it looks like BellSouth has their network prepared for long term power outages (as long as the NG supply keeps going). -- Chris Adams <cmadams@hiwaay.net> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble.
participants (3)
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Chris Adams
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David Lesher
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Mike Tancsa