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<p><font size="4">Much appreciated. Thank you, Chris</font><br>
</p>
<div class="moz-cite-prefix">On 11/15/2024 8:27 AM, Poole, Jharen
wrote:<br>
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Hello Chris,<br>
<br>
Stage 0 is what we would consider the state of the inverter
before it reaches normal. Once you reach normal (stage 1) that
is when you will begin outputting power, inverting power from
solar, etc.</div>
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Best Regards,<br>
<br>
Jharen Poole<br>
Applications Engineer II<br>
972-575-8875</div>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>From:</b>
RE-wrenches <a class="moz-txt-link-rfc2396E" href="mailto:re-wrenches-bounces@lists.re-wrenches.org"><re-wrenches-bounces@lists.re-wrenches.org></a>
on behalf of Christopher Warfel via RE-wrenches
<a class="moz-txt-link-rfc2396E" href="mailto:re-wrenches@lists.re-wrenches.org"><re-wrenches@lists.re-wrenches.org></a><br>
<b>Sent:</b> Thursday, November 14, 2024 8:37 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>
<a class="moz-txt-link-rfc2396E" href="mailto:re-wrenches@lists.re-wrenches.org"><re-wrenches@lists.re-wrenches.org></a><br>
<b>Cc:</b> Christopher Warfel
<a class="moz-txt-link-rfc2396E" href="mailto:cwarfel@entech-engineering.com"><cwarfel@entech-engineering.com></a><br>
<b>Subject:</b> Re: [RE-wrenches] More Issues with Parallel
Sol-Ark 15K System</font>
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<p>Can you point to a reference to what stage 0 is? This is a
new term for me. So far, have not installed multiple Sol-Ark
inverters at one site. Thank you, Chris<br>
</p>
<div class="x_moz-cite-prefix">On 11/12/2024 12:50 PM, Poole,
Jharen via RE-wrenches wrote:<br>
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Our inverters utilize CANbus communications for
establishing parallel operation between multiple Sol-Ark
inverters. CANbus communication operates as a serial
communication protocol. In this setup each inverter in the
setup is linked via a parallel communication cable forming
a daisy-chain configuration. If one inverter in the chain
experiences a shutdown due to a fault, the communication
chain is disrupted. Consequently, the other inverters will
also power down when we see this loss, ensuring system
protection and safeguarding the customer’s investment.</div>
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Paralleling must be done at a stage 0 they have to sync
and that is done in the pre normal mode, functionality
wise having them going into sync is extremely difficult
due to timing issues. It's easier to time it from a stage
0 than to do it when one unit is already running.<br>
<br>
Maintaining synchronization between inverters is critical;
if the inverters were to operate out of parallel it can
result in conflicts between the operation of inverters and
desynchronization of the units. This misalignment can
escalate, potentially causing significant damage to one or
more inverters and risking harm to other connected
equipment.</div>
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Best Regards,<br>
<br>
Jharen Poole<br>
Applications Engineer II<br>
972-575-8875</div>
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<pre class="x_moz-signature" cols="72">--
Christopher Warfel, PE
Entech Engineering, Inc.
POB 871 Block Island, RI 02807
401-447-5773</pre>
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