[91451] in North American Network Operators' Group
Re: APC Matrix 5000 question(s)
daemon@ATHENA.MIT.EDU (Robert E.Seastrom)
Fri Jul 28 09:34:34 2006
To: up@3.am
Cc: nanog@merit.edu
From: Robert E.Seastrom <rs@seastrom.com>
Date: Fri, 28 Jul 2006 09:33:59 -0400
In-Reply-To: <Pine.BSF.4.44.0607280016340.68307-100000@richard2.pil.net> (up@3.am's
message of "Fri, 28 Jul 2006 00:17:02 -0400 (EDT)")
Errors-To: owner-nanog@merit.edu
up@3.am writes:
> I left for several hours and came back to the house stinking like burning
> rubber. The new batteries are apparently melting the terminal rubber
> insulation. I had to throw it back into bypass mode and unplug that pack
> (the only one with new batteries!)
By "terminal rubber insulation" do you mean the insulation on the lugs
that bolt to the terminals on the batteries? If so, this is a sign
that you either didn't clean the contacts or didn't bolt them together
firmly. Those batteries need to be initially charged, and they draw a
lot of current when doing that... which heats up any kind of high
resistance connection in the chain.
> Any ideas to the cause? The status screens looked ok. ("no bad batteries"
> again)
By the way, you probably ought to replace all the batteries in all
your packs regardless of what the battery status monitor says.
---Rob
