<div dir="ltr"><div>Travis. </div><div><br></div><div>Is this the UL1741 PCS CRD (usually cross listed with UL3141 listing) or is this a different listing that they are looking for. I was pretty sure that the SolArk's all have the UL1741PCS CRD/UL3141, and of course the MID is built into the inverter already. But maybe it's a different one.</div><div><br></div><div>For California, they have an interesting issue for the open loop response time for the PCS CRD listing -- you only need less than 10 second response time for net billing systems, but less than 2 second response time for zero export systems, which has been a harder target for a number of inverters to hit (many are coming in at 3 to 4 seconds for one of the step tests). Ironically one of the main reasons to do a zero export system is because there is already a grandfathered net metered system on site which can export, but they want the new system to have a very fast response time to never export... I calculated that the inadvertent export could maybe cost them a dollar or two a year worse case)</div><div><br></div><div>Zeke</div><div dir="ltr"><br></div><div dir="ltr"><div style="margin-left:40px">As of July, New York State requires CRD Multimode compliance documentation<br>
for any MID devices.<br>
Sol-Ark does not yet have their paperwork.<br>
Does anyone have a recommendation for an ATS that I can install upstream of<br>
the Sol-Ark Inverters to satisfy this requirement?<br>
It feels like all I "need" is a simple contactor that will open when the<br>
grid goes down, but I don't know who makes a simple device like that which<br>
is also UL Listed.<br></div>
<br>
-Travis<br>
<br>
-- <br>
Travis Knipple<br>
Senior Engineer<br>
Hudson Solar Solutions LLC<br>
Rhinebeck, NY 12572<br>
518-539-8040 x408 | <a href="mailto:travis@hudsonsolarsolutions.com" target="_blank">travis@hudsonsolarsolutions.com</a></div><br><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr">Zeke Yewdall<div>PV Engineer</div><div>NABCEP #031508-89</div><div><a href="mailto:zeke@darkforestsolar.com" target="_blank">zeke@darkforestsolar.com</a></div><div>303-523-3592</div></div></div></div></div></div>