<div dir="ltr"><div>The units we have used have a large contactor inside the combiner box made by AMtec Solar. this was required to control the shut down includes a fire button done on the ground floor<br></div>Jerry<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 2, 2015 at 5:49 AM, Mark Frye <span dir="ltr"><<a href="mailto:markf@berkeleysolar.com" target="_blank">markf@berkeleysolar.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Jerry,<br>
<br>
What unit did you use?<span class="HOEnZb"><font color="#888888"><br>
<br>
Mark Frye</font></span><div><div class="h5"><br>
<br>
<div>On 2/2/2015 7:43 AM, Jerry Shafer
wrote:<br>
</div>
<blockquote type="cite">
<p dir="ltr">Wrenches<br>
We have installed some of these rapid shut down units and they
are always located close to the array and ours kill the DC
instantly as long as the inverter was running when this accures
did not test it with inverters already off.<br>
Jerry</p>
<div class="gmail_quote">On Feb 2, 2015 5:34 AM, "Christopher
Warfel" <<a href="mailto:cwarfel@entech-engineering.com" target="_blank">cwarfel@entech-engineering.com</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">We have a
interpretation problem among some people I work with with,
and 690.12 Rapid Shut Down and the the 10 second time for
reducing ac and dc conductors to 240ma, and 30V. The word
"initiation" seems to indicate that all affected conductors
need to be at these levels within 10 seconds of de-energizing
either the ac or dc conductors. If so, then the disconnects
need to be co-located to meet this requirement if this
interpretation is correct.<br>
<br>
I have read Mr. Brook's article in Solar Pro, but AHJs may
feel differently.<br>
<br>
Would anyone care to weigh in on their interpretation?<br>
<br>
Thank you, Chris<br>
<br>
<br>
<br>
<br>
<br>
-- <br>
Christopher Warfel, President<br>
ENTECH Engineering, Inc.<br>
PO Box 871, Block Island, RI 02807<br>
<a href="tel:401-466-8978" value="+14014668978" target="_blank">401-466-8978</a><br>
<br>
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