<p>Apologies! I missed the <span>PV-10208 model for Trace....</span></p>
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<pre> </pre>
<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
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<p>On Sun, 6 Jun 2021 09:07:53 -0700, Blake Gleason <blake@sunlightandpower.com> wrote:</p>
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<div dir="auto">All of the "PV" Series inverters we installed from Trace/Xantrex required external isolation transformers. That is, most smaller string inverters of that era had built-in iso transformers, but the PV series did not. Remember that the DC negative is grounded.
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<div dir="auto">I suppose it's also possible that the gas station service is 480V, in which case the iso transformer would also (in addition to isolation) serve the purpose of converting from 208 to 480V.</div>
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<div dir="auto">It's possible everything was still working, but probably won't be for long!<br /><br />
<div dir="auto">Blake Gleason, PE<br />Director of Innovation<br />& Technical Excellence<br />Sun Light & Power</div>
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<div class="gmail_attr" dir="ltr">On Sun, Jun 6, 2021, 7:38 AM <<a href="mailto:pgiroux@mindspring.com">pgiroux@mindspring.com</a>> wrote:</div>
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<p class="MsoNormal"> Good morning fellow wrenchers, need some help from those of you that have a bit more tenure than I do. Was called to look at a site yesterday that is down due to renovations. It is a gas station that has 20 KW worth of solar on the canopy, two Trace PV-10208's and two transformers, one on the output of each inverter. The system was shut down during a large renovation, wires cut and sort of lost under the pavement during the work. We have a good idea where we can dig to locate the conduit for AC but my dilemma is the equipment on the canopy. The owner has no idea how old the system is and if it was actually working prior to the reno.<span style="text-decoration: underline;"></span><span style="text-decoration: underline;"></span></p>
<p class="MsoNormal"><span style="text-decoration: underline;"></span> <span style="text-decoration: underline;"></span></p>
<p class="MsoNormal"> Getting AC back up and running to the canopy may be the easy part, I need to understand why there is a transformer along with the Trace inverter and how have these inverters held up for 20 + years and based on layout if needed can I replace inverter with current tech without rewiring the whole canopy ( 264 BP 85 watt panels, wired to combiner box then out to inverters ). Power supply at gas station is 208. So, please and thank you in advance, any and all help, guidance and ideas greatly appreciated. <span style="text-decoration: underline;"></span><span style="text-decoration: underline;"></span></p>
<p class="MsoNormal"><span style="text-decoration: underline;"></span> <span style="text-decoration: underline;"></span></p>
<p class="MsoNormal">Thank you<span style="text-decoration: underline;"></span><span style="text-decoration: underline;"></span></p>
<p class="MsoNormal">Peter Giroux<span style="text-decoration: underline;"></span><span style="text-decoration: underline;"></span></p>
<p class="MsoNormal">American Solar & Alternative Energy Solutions inc<span style="text-decoration: underline;"></span><span style="text-decoration: underline;"></span></p>
<p class="MsoNormal">Roswell Ga<span style="text-decoration: underline;"></span><span style="text-decoration: underline;"></span></p>
<p class="MsoNormal">678 525 0468<span style="text-decoration: underline;"></span><span style="text-decoration: underline;"></span></p>
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