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<p>I've done the AC relay idea as well, on Schneider that didn't
have the easy off switching like the Outbacks. The problems are:<br>
1) Much bigger relay, much higher current on the control side as
well. It required a relay for the relay.<br>
2) If there's a malfunction, you are messing with the main feeders
for the home. <br>
3) The inverters are still on with their no load draw, a pair of
VFX inverters, would be 45 to 50 watts, so you could still shut
the batteries down. <br>
</p>
<p>I think in your case without AGS, the trick might be to add a
bypass control switch parallel to the relay, so they can manually
turn the inverters back on. <br>
</p>
<p>Ray<br>
</p>
<div class="moz-cite-prefix">On 7/20/2023 5:15 PM, Jay wrote:<br>
</div>
<blockquote type="cite"
cite="mid:F50420D0-199F-4FE7-B001-E720011FB6A4@gmail.com">
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<div dir="ltr">Hi Ray</div>
<div dir="ltr"><br>
</div>
<div dir="ltr">This house won’t have an AGS, manual start only. </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">And your comments exactly, having to wait until the
next day when hopefully there is enough sun to charge the
battery is iffy. </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">Or they could do the inverter bypass switch. </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">Again I’m back to why is it a worse idea to install
a relay on the AC? </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">Thx</div>
<div dir="ltr"><br>
</div>
<div dir="ltr">Jay</div>
<div dir="ltr"><br>
</div>
<div dir="ltr">As to the sol ark which I never thought about it
being in a sense an AC coupled system. IE if the inverter is off
it won’t charge. </div>
<div dir="ltr">I guess you’ll have to install an external battery
charger?</div>
<div dir="ltr"><br>
</div>
<div dir="ltr"><br>
</div>
<div dir="ltr"><br>
</div>
<div dir="ltr"><br>
<blockquote type="cite">On Jul 20, 2023, at 5:08 PM, Ray Walters
via RE-wrenches <a class="moz-txt-link-rfc2396E" href="mailto:re-wrenches@lists.re-wrenches.org"><re-wrenches@lists.re-wrenches.org></a>
wrote:<br>
<br>
</blockquote>
</div>
<blockquote type="cite">
<div dir="ltr">
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<p>The aux off is only if the generator doesn't start. You
need to set the gen start voltage higher. Aux off is last
ditch shut down, set for 44v for lead acid, or 47 to 49v,
depending on the battery and inverter. Hopefully DC
coupled PV will raise the voltage enough to turn the
inverters back on the next day. <br>
</p>
<p>This is my concern on Solark installs, I just noticed that
the inverter won't pass through PV, if it hits its LVD set
point. <br>
</p>
<div class="moz-cite-prefix">On 7/20/2023 3:04 PM, jay via
RE-wrenches wrote:<br>
</div>
<blockquote type="cite"
cite="mid:46047C41-C43E-4B10-BCDC-2222CB563147@gmail.com">
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charset=UTF-8">
HI All,
<div class=""><br class="">
</div>
<div class="">I wanted to revisit this thread for one
reason.</div>
<div class=""><br class="">
</div>
<div class="">If you turn off the inverter at the remote
on/off with the AUX relay, then starting the generator
won’t have any impact as the inverter is off. </div>
<div class="">So someone will have to go and reset the AUX
relay.</div>
<div class=""><br class="">
</div>
<div class="">Vs</div>
<div class=""><br class="">
</div>
<div class="">If you do a relay on the AC output, when you
start the generator, it will start charging, raising the
battery volts, causing the AUX relay to close AC output
relay and you’ll have power in the house.</div>
<div class=""><br class="">
</div>
<div class="">Am I missing something?</div>
<div class=""><br class="">
</div>
<div class="">thanks</div>
<div class=""><br class="">
</div>
<div class="">jay</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">Here is the last email I think:</div>
<div class=""><br class="">
</div>
<div class="">
<pre style="font-family: courier, "courier new", monospace; font-size: 14px; white-space: pre-wrap; overflow-wrap: break-word; margin: 0em;" class="">Mac,
</pre>
<tt style="margin: 0px; font-family: courier,
"courier new", monospace; font-size: 14px;"
class="">I think you've got an elegant solution to the
problem. All you need is </tt><tt style="margin: 0px;
font-family: courier, "courier new",
monospace; font-size: 14px;" class="">an inexpensive
relay and to program the Aux output for loadshed. I </tt><tt
style="margin: 0px; font-family: courier, "courier
new", monospace; font-size: 14px;" class="">believe
shutting down the inverter with the remote on/off
contacts is </tt><tt style="margin: 0px; font-family:
courier, "courier new", monospace; font-size:
14px;" class="">actually less stressful on the inverter
than opening a relay or </tt><tt style="margin: 0px;
font-family: courier, "courier new",
monospace; font-size: 14px;" class="">contactor on the
load side.</tt>
<pre style="font-family: courier, "courier new", monospace; font-size: 14px; white-space: pre-wrap; overflow-wrap: break-word; margin-top: 0px; margin-bottom: 0px;" class="">Kent Osterberg
Blue Mountain Solar
On 7/11/2023 5:19 PM, Mac Lewis via RE-wrenches wrote:
</pre>
<blockquote style="margin: 0em; padding: 0px 0px 0px
0.85em; color: rgb(160, 30, 30); border-left-width:
0.2em; border-left-style: solid; border-left-color:
rgb(85, 85, 238); font-family: helvetica, arial,
sans-serif; font-size: 14px;" class="">
<pre style="font-family: courier, "courier new", monospace; font-size: 1em; white-space: pre-wrap; overflow-wrap: break-word; margin: 0em;" class="">Hello Wrenches,
</pre>
<tt style="margin: 0px; font-family: courier,
"courier new", monospace; font-size: 1em;"
class="">I'm trying to solve an issue with an older
Outback FX system. It's a </tt><tt style="margin:
0px; font-family: courier, "courier new",
monospace; font-size: 1em;" class="">quad stack of
Outback 3648 FX inverters and he has a couple of </tt><tt
style="margin: 0px; font-family: courier,
"courier new", monospace; font-size: 1em;"
class="">Fortress eVault and an unreliable generator.
The LBCO setting can't go </tt><tt style="margin: 0px;
font-family: courier, "courier new",
monospace; font-size: 1em;" class="">high enough to
cut out before the eVaults cut out so he </tt><tt
style="margin: 0px; font-family: courier,
"courier new", monospace; font-size: 1em;"
class="">occasionally will have to direct charge the
eVault to get things </tt><tt style="margin: 0px;
font-family: courier, "courier new",
monospace; font-size: 1em;" class="">running again.</tt><tt
style="margin: 0px; font-family: courier,
"courier new", monospace; font-size: 1em;"
class="">I'd like to use a 12V Aux relay logic to trip
the primary inverter </tt><tt style="margin: 0px;
font-family: courier, "courier new",
monospace; font-size: 1em;" class="">on/off contacts
before we go into battery shutdown so the solar has a </tt><tt
style="margin: 0px; font-family: courier,
"courier new", monospace; font-size: 1em;"
class="">chance to recover the system. Pretty simple
overall but I wanted to </tt><tt style="margin: 0px;
font-family: courier, "courier new",
monospace; font-size: 1em;" class="">see if there are
any known ill effects of doing this with substantial </tt><tt
style="margin: 0px; font-family: courier,
"courier new", monospace; font-size: 1em;"
class="">load on the system. Of course, I can use a
power relay but this may </tt><tt style="margin: 0px;
font-family: courier, "courier new",
monospace; font-size: 1em;" class="">be better.</tt>
<pre style="font-family: courier, "courier new", monospace; font-size: 1em; white-space: pre-wrap; overflow-wrap: break-word; margin: 0em;" class="">Thanks for your input!
--</pre>
</blockquote>
<div class=""><br class="">
</div>
</div>
<br>
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