nanog mailing list archives
Re: APC Matrix 5000 question(s)
From: Michael Loftis <mloftis () wgops com>
Date: Tue, 01 Aug 2006 17:10:33 -0600
--On July 28, 2006 9:33:59 AM -0400 "Robert E.Seastrom" <rs () seastrom com> wrote:
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
Yeah my other thought here was that one or more of the other packs had totally dead shorted cells, that'd cause excessive heating on the other batteries too.
Current thread:
- Re: APC Matrix 5000 question(s) Michael Loftis (Aug 01)
- <Possible follow-ups>
- Re: APC Matrix 5000 question(s) Matthew Sullivan (Aug 01)
- Re: APC Matrix 5000 question(s) up (Aug 02)
- Re: APC Matrix 5000 question(s) (please, lets end this) joe mcguckin (Aug 02)
- PIPE CLEANERS... was: APC Matrix 5000 question(s) bmanning (Aug 02)
- Re: PIPE CLEANERS... was: APC Matrix 5000 question(s) Mike Lyon (Aug 03)
- Re: APC Matrix 5000 question(s) up (Aug 02)