Well.... Forest did a very nice product at one time that would do exactly that.
I think many hope he revives that project.
From: Jesse DuPont
Sent: Friday, February 3, 2017 9:05 AM
To: af@afmug.com
Subject: Re: [AFMUG] I Want
Does anyone have a document or wiki that describes how to take an off-the-shelf
AC standby generator and use it at a solar/DC site? I'm assuming starting would
be via remotely-operated or conditional-logic-operated relay based on battery
voltage? Anyone done it and care to share the nitty gritty?
Jesse DuPont
Network Architect
email: jesse.dup...@celeritycorp.net
Celerity Networks LLC
Celerity Broadband LLC
Like us! facebook.com/celeritynetworksllc
Like us! facebook.com/celeritybroadband
On 2/3/17 9:02 AM, ch...@wbmfg.com wrote:
And on a standby generator, if it is a true DC generator the brushes will
last forever. But it is probably an alternator/rectifier.
AC generator with redundant rectifiers is bound to be the best value.
From: Adam Moffett
Sent: Friday, February 3, 2017 8:56 AM
To: af@afmug.com
Subject: Re: [AFMUG] I Want
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
--
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.
