<div dir="ltr">The "Door Open" switch is a very useful feature. I am trying to get Fronius to put a digital shutdown terminal on its CL line of inverters, or all inverters preferably. We need to pressure all the inverter manufacturers to provide a logic in or dry contact method of shutdown.<div>
Most ATS will provide a N/O dry to indicate position. </div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Feb 13, 2014 at 10:21 PM, Jerry Shafer <span dir="ltr"><<a href="mailto:jerrysgarage01@gmail.com" target="_blank">jerrysgarage01@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">I have done systems in Hawaii, here is one with a 30 k PV system and with a 250k Cummins back up genny. We have a contactor in the ATS that will open if the genny is operating, this in turn sends a door open signal to the Satcon shutting it down I don't want anything effecting the genset operation so with the open created in the ATS it tricks the inverter to shut off safely. We as a policy will not run a genset and PV unless as a AC coupling system and you have some active over voltage like freq and voltage triggers.<span class="HOEnZb"><font color="#888888"><br>
Jerry</font></span></p>
<div class="gmail_quote"><div><div class="h5">On Feb 8, 2014 7:31 AM, "Kirk Herander" <<a href="mailto:kirk@vtsolar.com" target="_blank">kirk@vtsolar.com</a>> wrote:<br type="attribution"></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div class="h5">
<div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="font-size:14.0pt">Hello,<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:14.0pt"><u></u> <u></u></span></p><p class="MsoNormal">
<span style="font-size:14.0pt">I recently posed the question to Solaredge tech support, wondering if their inverter, in this case a 20kw 480 3-phase, would have any issues if it were connected to an AC panel backed up by a generator. They told me no problem, for the inverter’s anti-islanding will work if it sees the “generator frequency” and therefore will not try to push PV power to the panel. But isn’t 60 hz, 60hz regardless of origin? There’s got to be more to it than that. I question this because I asked the same to SMA several years ago and they were hard-set against connecting Sunnyboys to a panel with generator backup, so I always would establish the point of interconnection upstream of the generator feed. Comments? Thanks.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:14.0pt">Kirk Herander<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:14.0pt">VT Solar, LLC<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">dba Vermont Solar Engineering<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:14.0pt">NABCEP<sup>TM </sup>Certified Inaugural Certificant<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt">NYSERDA-eligible Installer<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:14.0pt">VT RE Incentive Program Partner<u></u><u></u></span></p><p class="MsoNormal">
<span style="font-size:14.0pt"><a href="tel:802.863.1202" value="+18028631202" target="_blank">802.863.1202</a><u></u><u></u></span></p><p class="MsoNormal"><u></u> <u></u></p></div></div><br></div></div><div class="">_______________________________________________<br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br>Chris Mason<div>President, Comet Systems Ltd</div><div><a href="http://www.cometenergysystems.com" target="_blank">www.cometenergysystems.com</a></div><div>
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