[69185] in North American Network Operators' Group
Re: UPS and generator interaction?
daemon@ATHENA.MIT.EDU (Jay Hennigan)
Mon Mar 29 14:02:20 2004
Date: Mon, 29 Mar 2004 11:00:11 -0800 (PST)
From: Jay Hennigan <jay@west.net>
To: Mike Lewinski <mike@rockynet.com>
Cc: nanog@merit.edu
In-Reply-To: <406870B5.6080205@rockynet.com>
Errors-To: owner-nanog-outgoing@merit.edu
On Mon, 29 Mar 2004, Mike Lewinski wrote:
> But, on a minor note that probably won't affect your Symmetra but I'm
> posting in case anyone else here can shed light on.... we had a power
> event this AM. The transfer switch did it's magic and all was good...
> Except for two new APC1400's- they failed once the batteries drained. I
> triple-checked that they were on the right panel, played with
> sensitivity, even tried daisy-chaining one off a good working 2200.
> Nothing I did would convince the two 1400s they had power. Once the
> house power was restored they came back to life and look normal. I later
> learned that two of our colo customers with APC1400s had the same
> problem :( Other models (even a couple non-essential lower-end, dumb APC
> 450s and 650s) didn't blink at the generator power.
Check generator frequency. If it has a mechanical governor, you may
need to replace it with electronic.
--
Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net
WestNet: Connecting you to the planet. 805 884-6323 WB6RDV
NetLojix Communications, Inc. - http://www.netlojix.com/
