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<p>I'm not an EMP expert by any means, but I've dealt with quite a
few lightning damaged systems. Having a good connection to a low
impedance grounding system (steel cased well, Ufer ground) is
crucial. I also have had fantastic luck with Midnite's MNSPD
line. Delta, not so much.<br>
</p>
<div class="moz-cite-prefix">On 3/9/2023 12:39 PM, Starlight via
RE-wrenches wrote:<br>
</div>
<blockquote type="cite"
cite="mid:B52C6813-C785-4933-A62F-C25824C8BED4@starlightsolar.com">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<div class="">Right Dave. The VooDoo of EMI filtering, lightning
protection or EMP induced voltage reduction attempts are similar
and governed by the inverse square law. How much energy and how
close is it? You must properly reduce energy propagation <u
class="">at every point.</u> I have seen very expensive
protection systems with poor implementation making the entire
scheme useless. So, is the cost and effort worth the results?
Study, then study more. It may be more cost effective to have a
back part rather than spending money on an expensive
preventative measure.</div>
<div class=""><br class="">
</div>
Larry Crutcher<br class="">
<div class="">
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);
font-family: Helvetica; font-size: 14px; font-style: normal;
font-variant-caps: normal; font-weight: normal;
letter-spacing: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px; -webkit-text-size-adjust:
auto; -webkit-text-stroke-width: 0px; text-decoration: none;">Starlight
Solar Power Systems</div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);
font-family: Helvetica; font-size: 14px; font-style: normal;
font-variant-caps: normal; font-weight: normal;
letter-spacing: normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px; -webkit-text-size-adjust:
auto; -webkit-text-stroke-width: 0px; text-decoration: none;"><br
class="">
</div>
<br class="Apple-interchange-newline">
</div>
<div><br class="">
<div class="">On Mar 9, 2023, at 11:18 AM, Marco Mangelsdorf via
RE-wrenches <<a
href="mailto:re-wrenches@lists.re-wrenches.org"
class="moz-txt-link-freetext" moz-do-not-send="true">re-wrenches@lists.re-wrenches.org</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div dir="ltr" class=""><font class="" size="4">Hmmm...I
wonder how much SolArk is dreaming.</font>
<div class=""><font class="" size="4"><a
href="https://www.sol-ark.com/e-m-p/"
class="moz-txt-link-freetext" moz-do-not-send="true">https://www.sol-ark.com/e-m-p/</a><br
class="">
</font></div>
</div>
<br class="">
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Thu, Mar 9, 2023 at
9:58 AM Dave Angelini Offgrid Solar via RE-wrenches <<a
href="mailto:re-wrenches@lists.re-wrenches.org"
class="moz-txt-link-freetext" moz-do-not-send="true">re-wrenches@lists.re-wrenches.org</a>>
wrote:<br class="">
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div
style="font-size:12pt;font-family:Verdana,Geneva,sans-serif"
class="">
<div id="m_5778047743419261978signature" class="">Depends
on how close and how strong the pulse or strike is. In
Mil satellites, the same thing. You can harden but are
dreaming if you think your electronics can really
survive it. Even harder to protect electronics that
are powered on. The KH series spy sats I saw
schematics for had redundant systems that were off or
rotated I seem to remember. This was back in the 90's
so very sketchy in the fog of time.</div>
<div class=""> </div>
<div class="">For Offgrid, and High Rel power systems, a
faraday cage for your inverter and CC is a must if you
are in high lightning zone. A top of a mountain is
often really hard on a house or Telcom. One place I
have blows SPD's yearly. <br class="">
<pre class=""> </pre>
<pre class=""><strong class=""><span style="font-size:small" class="">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" rel="noopener" target="_blank" class="moz-txt-link-freetext" moz-do-not-send="true">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net" target="_blank" class="moz-txt-link-freetext" moz-do-not-send="true">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
</div>
<p class=""><br class="">
</p>
<p id="m_5778047743419261978reply-intro" class="">On
2023-03-09 9:09 am, Drake Chamberlin via RE-wrenches
wrote:</p>
<blockquote type="cite" style="padding:0px
0.4em;border-left:2px solid rgb(16,16,255);margin:0px"
class="">
<div id="m_5778047743419261978replybody1" class="">
<div
style="font-size:10pt;font-family:Verdana,Geneva,sans-serif"
class="">
<p class="">Backwoods Solar sells kits to harden
against EMP. I am wondering how effective they
would be.</p>
<p class="">Drake</p>
<p class=""><br class="">
</p>
<p class=""><em class="">Drake Chamberlin</em></p>
<p class=""><em class="">Athens Electric LLC</em></p>
<p class=""><em class="">Ohio Electrical
Contractor’s License 44810</em></p>
<p class=""><em class="">CO Master Electrician’s
License 4526</em></p>
<p class=""><em class="">NABCEP Certified PV
Installation Professional</em></p>
<div id="m_5778047743419261978v1signature"
class="">---<br class="">
<div
style="margin:0px;padding:0px;font-family:monospace"
class=""> </div>
</div>
<p class=""><br class="">
</p>
<p id="m_5778047743419261978v1reply-intro"
class="">On 2023-03-08 11:49, Glenn Burt via
RE-wrenches wrote:</p>
<blockquote style="padding:0px
0.4em;border-left:2px solid
rgb(16,16,255);margin:0px" class="">
<div id="m_5778047743419261978v1replybody1"
class="">
<div class="">
<div style="font-size:10pt" class="">
<div dir="auto" class="">I would review
Sol Arks website as they say they are
immune. Probably have something to back
that up published there.</div>
<div dir="auto" class=""> </div>
<div class="">
<div dir="auto" class="">-Glenn</div>
<div dir="auto" class="">Sent from my
'smart'phone, so please excuse typos
and spelling errors.</div>
</div>
</div>
<div style="font-size:10pt" class="">
<div
id="m_5778047743419261978v1v1LGEmailHeader"
dir="auto" class="">
<div dir="auto" class=""> </div>
<div dir="auto" class="">------ Original
message------</div>
<div dir="auto" class=""><strong
class="">From: </strong>Marco
Mangelsdorf via RE-wrenches</div>
<div dir="auto" class=""><strong
class="">Date: </strong>Wed, Mar 8,
2023 11:37 AM</div>
<div dir="auto" class=""><strong
class="">To: </strong>RE-wrenches;</div>
<div dir="auto" class=""><strong
class="">Cc: </strong>Marco
Mangelsdorf;</div>
<div dir="auto" class=""><strong
class="">Subject:</strong>[RE-wrenches]
PV and EMP</div>
<div dir="auto" class=""> </div>
</div>
Aloha all,
<div class=""> </div>
<div class="">Have any of you come across
any articles or white papers on how PV
systems (including energy storage) fare
under conditions of electromagnetic
pulses and solar flares?</div>
<div class=""> </div>
<div class="">Mahalo, </div>
<div class="">marco</div>
</div>
</div>
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