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<p>Midnite Solar has their SOB system that attaches inline with the
modules. It can do both String level and module level shutdown.
We've used it off grid with success. The biggest issue is it is
not compatible with most charge controllers, except Magnum's PT
100 for some reason. We used the PT 100, used one pole of a 3
pole DC disconnect for the "ON" signal, and all worked fine. No
nuisance tripping or other issues for over a year. We did not
bother with controlled breakers, etc at the charge controller, and
certainly not the inverter. <br>
</p>
<p>As is clear in Figure 690.1(b) Note (2) <i>The PV system
disconnect... separates the PV system from all other systems. </i>This
means that we label the external DC disconnect as <i>PV
Disconnect, </i>and the voltage requirements of 690.12 only
apply up to that PV disconnect. Articles 445 Generators, 480
Batteries, 705 Interconnected Systems, 706 Storage Systems, and
710 Stand Alone Systems, all apply after the PV disconnect.<br>
</p>
<pre class="moz-signature" cols="72">Ray Walters
Remote Solar
303 505-8760</pre>
<div class="moz-cite-prefix">On 9/27/19 11:23 AM, Lorenzo Ortiz
wrote:<br>
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<div dir="ltr">Wrenches,
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<div>Are any of you looking ahead at solutions for module level
rapid shutdown for off grid? Here in CA it's being implemented
next year (at least in my area) and I haven't found any
reliable, proven, <b>cost-effective</b> products yet. </div>
<div>I know Tigo has some sort of inline component but haven't
heard a lot about it.<br>
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<div>Any input is appreciated.</div>
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<div>Thanks</div>
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<div><span
style="background-color:rgb(255,255,255)"><font
color="#0b5394"><u style="font-weight:bold"><span></span><span></span></u> <img
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<div><span
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<div><span
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style="font-weight:bold"><font color="#999999">Technical PV Design
Specialist -
Commercial/Residential/Off-Grid</font></span></span></div>
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