[RE-wrenches] Conext SW Mystery

Mon Nov 18 23:59:11 EST 2019

Aaron,

Ditto what Ray said... I think it's a LVD, LBCO... but could also be a
connection cabling issue have them put a wrench on the terminals,  have
them loosen first, then retorque, don't just have them "tug test" them as
if they are already welded it'll look like a good connection...   Make sure
they do this with the system off and not charging as a spark here could
ignite hydrogen, this would cause a battery to possibly explode...   Not
pretty or fun!

 If LVD or LBCO is set too high, that would prevent the Gen from Auto
Starting.

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On Mon, Nov 18, 2019 at 8:52 PM Ray <ray at solarray.com> wrote:

> Totally sounds like Low voltage disconnect to me.  Many, Many times the
> generator does not start when it should or connect to the inverter.  I've
> had 2 systems recently, that both shut down, 1 had the LVD set really high,
> higher than the gen start, so that definitely didn't work.  The next one
> would start the generator when required, but the generator voltage
> regulation was incorrect, so the inverter would never connect to it.
> Thinking the Ecogen is going to save the day is going to be recipe for
> disaster;  over the years I've come to despise the Ecogen.  I'm seeing 50%
> failures, and some of the failures are catastrophic, complete engine
> failures.  I don't have a suggested replacement, other than go big enough
> (+20 kW) to get into the 1800 rpm water cooled equipment, or just get a
> decent portable.  At least with a portable, you can haul it in for service.
>
> Ray Walters
> Remote Solar
> 303 505-8760
>
> On 11/18/19 8:00 PM, Aaron Mandelkorn wrote:
>
> This is a strange one.  I have a Schneider SW 4024 installed in a remote
> area of Colorado.  Cold and high altitude.  Since the fall every time my
> customer has gone out to her cabin she noticed that the inverter is off.
> She proceeded to turn the unit back on by pressing the button on the SW.
> There are no error messages, no tripped breakers.  She has no issues with
> the system when she is there and leaves the system on.  Next weekend rolls
> around and she comes back out to find the inverter off again.  Schneider
> tech support seems to feel that the inverter is turning off on its own due
> to low battery voltage.  But there is nothing in the log that shown this.
> And there is a Ecogen 15KW installed to protect from ever seeing the low
> battery cut off.
>
> Has anyone experienced this?  My customer always comes ont on a friday and
> seems to believe the day of the week has something to do with this or this
> be cold induced?  It is rather pressing since winter is in full swing and a
> turned off inverter can mean frozen pipes.
>
> Any help out there?
>
> Aaron Mandelkorn
> President / Founder
> Renewable Energy Outfitters
> www.reosolar.com
> Off Grid Depot
> www.offgridnow.com
> 970-596-3744
>
>
>
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