The spec sheet for the SS-MPPT says 75 volts maximum open circuit.
Maximum PV power: 200 watts for 12-volt batteries and 400-watts for
24-volt batteries. While it is supposed to be protected from PV
overload and PV high voltage, it doesn't seem surprising that failures
that have been observed
All controllers have failures – most commonly due to user/installer errors. Of
all the controllers we sell, Morningstar have been by far the most trouble free
and has the best no-hassle warranty.
We have probably sold/installed around 100 to 200 of the SS-MPPT-15 controllers
over the past year
And that's why we sell Morningstar as well. We don't use them in our
own residential installations, as they're not listed. But for small
unpermitted systems they work well, with occasional failures.
But for retail sales (a tiny part of our business) the advantages
Fellow Wrenches,
What generator manufacturer are you currently recommending for off grid use? A
Kohler 18RES (LP, 3,600 rpm, air cooled) a customer installed last year has
already failed after 370 hours of use during 6 months of construction and
winter occupancy. It consumed enough oil to cau
I've got customers using the Onan 1800-rpm liquid-cooled 20-KW and
30-kW LP residential generators without any problems. While Onan
doesn't exclude off-grid use, the warranty
is only 1-year 1000-hours for off-grid applications.
Kent Osterberg
Blue Mountain Solar, Inc.
Randy Brooks wrote:
Fe
I use Onan more than Kohler but water cooled and low RPM are
the ticket.
Dana Orzel
Great Solar Works, Inc
E - d...@solarwork.com
V - 970.626.5253
F - 970.626.4140
C - 970.209.4076
web - www.solarwork.com
"Responsible Technologies for Responsible People since 1988"
Do not ever believ
We do about 50/50 grid tie and off grid and from our experience I second
Dana'a comment below about water cooled and particularly about low rpm.
Daryl DeJoy
NABCEP Certified PV installer
Penobscot Solar Design
> I use Onan more than Kohler but water cooled and low RPM are
> the ticket.
>
>
>
>
Randy,
I have seen issues with Kohler's as well. But some of them perform well.
When Kohler changed their warranty I had a meeting with the company
owner that installs and services their units.
We decided on a middle ground. Rather than moving all off grid
systems to a different genset, we
9-4493
>
> Cell: 512-460-9825
>
>
>
> Sent from an iPhone.
>
>
> On Jan 20, 2011, at 5:37 PM, "Jason Szumlanski"
wrote:
>
> I?m looking for a ~10A charge controller for a 12V battery with adjustable
LVD that goes up to at least 12V. Priorities in order ar
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