Re: hey

Jonathan L Cunningham wrote:
Dan Goodman <dsgood@xxxxxxxxxxx> wrote:

Jonathan L Cunningham wrote:

That's because you know they will fail. And instead of trying to do
prevent it, you make plans for when that happens. So hospitals have
back-up generators that (are supposed to) cut in when it happens. Most
people won't die even if they are trapped in a lift (elevator) for a
few hours.
When NYC had a major blackout in the mid-1960s, it turned out that a
number of hospitals had emergency generators which depended on electric
fuel pumps.

That's why it's a good idea to test things. Oh, I suppose they did, and
it worked.

Maybe you need to test the testers too.

Jonathan
I'm reasonably certain I've told this one here, but here goes, anyway. :-)

When I was on active duty in Kodiak, we installed a giant UPS under the Operations center flooring. If there was a major power failure, not only was our emergency generator to cut in, but it wasn't even going to cause a flicker in the Operations Center.

Once installed, the system needed a test, so on a bright and pretty day soon after, we very intentionally cut the power to the building. the generator came on, but then turned off. The power to everything controlled by the UPS failed immediately. We brought the building power back up. The rest of the building lit up, but everything powered through the UPS continued to be dark. We had active missions ongoing, but no way to talk to anybody, so threw command and control over to the District command center in Juneau, who were able to take control of the various distant radio antennas. It took several hours to convince the UPS to take itself offline so that we could resume normal operations. turned out that the UPS told the generator to cut off, because it didn't need a charge. Since the UPS was denying power to everything except the emergency generator's off switch, it would have been a very long time before the UPS needed a recharge.

Software malfunction, and the tech-rep we had on site for the test was completely out of his depth.

Bill
.

Relevant Pages

  • Re: Powah!
    ... tooth-extraction> on the rotten power pole between us and next door. ... multi-hour rotating blackouts during periods of high demand because there ... the UPS is to keep the computer going while you start the generator!! ...
    (uk.comp.sys.mac)
  • Re: Powah!
    ... tooth-extraction> on the rotten power pole between us and next door. ... multi-hour rotating blackouts during periods of high demand because there ... the UPS is to keep the computer going while you start the generator!! ...
    (uk.comp.sys.mac)
  • Re: power outage ? from a novice..
    ... I have several small UPS devices, one for each of my PVRs, and each ... will power a PVR for several hours, even when the PVR is recording. ... keep the generator running continuously (you need to refill the gas ...
    (alt.tv.tech.hdtv)
  • Re: power outage ? from a novice..
    ... amount of power for quite a long time. ... I have several small UPS devices, one for each of my PVRs, and each ... keep the generator running continuously (you need to refill the gas ...
    (alt.tv.tech.hdtv)
  • Re: Generators and electronics
    ... A really good UPS might though. ... generator attached to a Briggs & Stratton engine. ... that manufacturers quietly recommend no surge protectors on a UPS ... UPS magically 'cleans' electricity. ...
    (alt.home.repair)