However you get there, the nice thing about DC is you don't have to stay
at 3600 RPM. It's a big part of why inverter generators last so long on
small loads.
------ Original Message ------
From: "Mark Radabaugh" <m...@amplex.net>
To: af@afmug.com
Sent: 2/3/2017 10:29:29 AM
Subject: Re: [AFMUG] I Want
From an engineering standpoint I would expect a DC generator to be
higher maintenance than an AC generator. True DC generators have
brushes that wear while AC generators have very little other than
bearings to wear out. Alternators (like your car has) are actually AC
generators with a rectifier pack to turn the AC back into DC. When
your alternator bites the dust about half the time it’s the rectifier
that fails, the other half of the time it’s the bearings, with a small
percentage of winding or other failures (yeah - I know that’s more than
100%).
Our high reliability sites have standby AC generators with 500 gal
propane tanks, a rectifier shelf, and ~24 hours of batteries. So far
they have been very reliable.
Mark
On Feb 2, 2017, at 5:45 PM, Chuck McCown <ch...@wbmfg.com> wrote:
Well, it certainly would protect you in the event of rectifier
failure.
From:That One Guy /sarcasm
Sent: Thursday, February 02, 2017 3:44 PM
To:af@afmug.com
Subject: Re: [AFMUG] I Want
if youre doing a standby generator at a dc site, even an AC fed DC
site, wouldnt it be more efficient to use a dc generator, with less
maintenance?
On Thu, Feb 2, 2017 at 4:29 PM, Adam Moffett <dmmoff...@gmail.com>
wrote:
Ah yes, I see.
------ Original Message ------
From: "Chuck McCown" <ch...@wbmfg.com>
To: af@afmug.com
Sent: 2/2/2017 5:28:39 PM
Subject: Re: [AFMUG] I Want
Perfect for off-grid solar backup.
From:Adam Moffett
Sent: Thursday, February 02, 2017 3:27 PM
To:af@afmug.com
Subject: Re: [AFMUG] I Want
Man, sounds like a lot of money for 6kW.
Variable speed must save a lot of gas though.
------ Original Message ------
From: "Chuck McCown" <ch...@wbmfg.com>
To: af@afmug.com
Sent: 2/2/2017 5:25:35 PM
Subject: [AFMUG] I Want
Have to come up with a reason but I want it:
https://www.norwall.com/products/Kohler-6kW-Variable-Speed-Direct-Current-Generator-with-Oil-Make-Up-Kit-48-Volt-DC-6VSG?cid=google_feed&dfw_tracker=6374-6VSG-QS13&gclid=COWuo4-68tECFUdlfgodl8oG_A
<https://www.norwall.com/products/Kohler-6kW-Variable-Speed-Direct-Current-Generator-with-Oil-Make-Up-Kit-48-Volt-DC-6VSG?cid=google_feed&dfw_tracker=6374-6VSG-QS13&gclid=COWuo4-68tECFUdlfgodl8oG_A>
--
If you only see yourself as part of the team but you don't see your
team as part of yourself you have already failed as part of the team.
