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<p class="MsoNormal">Aloha Chris. <o:p></o:p></p>
<p class="MsoNormal">We have been working with Tigo on repairs of a 10 or 11 year old system consisting of 352 original Tigo MMES075V units on a commercial rooftop. Original installer went belly up. The 100 kW Satcon inverter needed repairs. (got it repaired
!) The Tigo monitoring system was OFF-line for many years. We put in a new communication access point, and found 3 units off-line. Since that time Tigo warranted the damaged units with swappable Tigo's TS-4, helped with commissioning the new units, reprograming
ALL existing units with new updates, and has been very communicative and helpful. In my opinion, still a solid product, and still working strong. Not going to work for your thought on AC coupling, but in my opinion, a good company to work with if you decide
on DC.<o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:6.5pt;font-family:"Verdana",sans-serif;color:black">Thomas Hall </span></b><span style="font-size:6.5pt;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:6.5pt;font-family:"Verdana",sans-serif;color:black">Solar Specialty Group INC C-33998</span><span style="font-size:6.5pt;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:6.5pt;font-family:"Verdana",sans-serif;color:black">dba Specialty Group Electric </span><span style="font-size:6.5pt;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:6.5pt;font-family:"Verdana",sans-serif;color:black"><a href="tel:808-854-9539" title="tel:808-854-9539"><span style="color:black">808-854-9539</span></a></span></b><span style="font-size:6.5pt;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:6.5pt;font-family:"Verdana",sans-serif;color:black"><a href="mailto:thomashall@solarspecialtygroup.com" title="mailto:thomashall@solarspecialtygroup.com"><span style="color:#000064">thomashall@solarspecialtygroup.com</span></a></span><span style="font-size:6.5pt;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:6.5pt;font-family:"Verdana",sans-serif;color:#000064"><a href="http://www.solarspecialtygroup.com" title="http://www.solarspecialtygroup.com"><span style="color:#000064">www.solarspecialtygroup.com</span></a></span><span style="font-size:6.5pt;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:6.5pt;font-family:"Verdana",sans-serif;color:black">NABCEP Certified PV Installation Professional </span><span style="font-size:6.5pt;font-family:"Arial",sans-serif;color:#212121">
</span><span style="font-size:6.5pt;font-family:"Verdana",sans-serif;color:black">031310-92</span><span style="font-size:6.5pt;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:6.5pt;font-family:"Verdana",sans-serif;color:#202124;background:white">Certified Thermographer</span><span style="font-size:6.5pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">RE-wrenches <re-wrenches-bounces@lists.re-wrenches.org> on behalf of Dave Tedeyan <dave@sungineersolar.com><br>
<b>Date: </b>Wednesday, August 25, 2021 at 3:03 AM<br>
<b>To: </b>cwarfel@entech-engineering.com <cwarfel@entech-engineering.com>, RE-wrenches <re-wrenches@lists.re-wrenches.org><br>
<b>Subject: </b>Re: [RE-wrenches] Tigo Rapid Shutdown equipment<o:p></o:p></span></p>
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<p class="MsoNormal">Hi Chris,<o:p></o:p></p>
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<p class="MsoNormal">I also am curious of others experiences. I've got one system with SMA and the TS4-R-F. No problems, but it's only 6 months old. I hear that SMA now recommends the ones made by JMS, but it looks like essentially the same thing.<o:p></o:p></p>
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<p class="MsoNormal">Cheers,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Dave<o:p></o:p></p>
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<p class="MsoNormal">On Tue, Aug 24, 2021, 11:22 AM Christopher Warfel <<a href="mailto:cwarfel@entech-engineering.com" target="_blank">cwarfel@entech-engineering.com</a>> wrote:<o:p></o:p></p>
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<p>WRENCHES,<o:p></o:p></p>
<p>We are meeting our customer demand for more multimode systems. All are grid interconnected. I wanted to use micro inverters to ac couple, but I have to look at the better economics of dc coupling. I have never used a dc module level Rapid Shutdown device.
In the past we have had ground mounted or used Outback's huge dc array disconnect.
<o:p></o:p></p>
<p>My question, and please feel free to contact off list, are Tigo's TS-4 and similar devices reliable. I know that they were not considered as reliable as an Enphase inverter for example at one time. Thank you for any previous experience you can relay.<o:p></o:p></p>
<p><o:p> </o:p></p>
<p>Chris<o:p></o:p></p>
<p><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"PMingLiU-ExtB",serif"> Christopher Warfel</span><br>
<span style="font-family:"PMingLiU-ExtB",serif"> ENTECH Engineering, Inc.</span><br>
<span style="font-family:"PMingLiU-ExtB",serif">PO Box 871, Block Island, RI 02807</span><br>
<span style="font-family:"PMingLiU-ExtB",serif"> 401-466-8978</span><br>
<span style="font-family:"PMingLiU-ExtB",serif"><a href="http://entech-engineering.com/" target="_blank"><span style="color:windowtext;text-decoration:none"><span style="color:blue"><img border="0" width="274" height="121" style="width:2.8541in;height:1.2604in" id="_x0000_i1025" src="cid:part1.422A14A7.9E5754F4@entech-engineering.com"></span></span></a><br>
<br>
</span><o:p></o:p></p>
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