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 at every point. 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.
Larry Crutcher Starlight Solar Power Systems On Mar 9, 2023, at 11:18 AM, Marco Mangelsdorf via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote: Hmmm...I wonder how much SolArk is dreaming. https://www.sol-ark.com/e-m-p/ <https://www.sol-ark.com/e-m-p/> On Thu, Mar 9, 2023 at 9:58 AM Dave Angelini Offgrid Solar via RE-wrenches <re-wrenches@lists.re-wrenches.org <mailto:re-wrenches@lists.re-wrenches.org>> wrote: 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. 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. Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ <http://members.sti.net/offgridsolar/> e-mail offgridso...@sti.net <mailto:offgridso...@sti.net> text 209 813 0060 On 2023-03-09 9:09 am, Drake Chamberlin via RE-wrenches wrote: > Backwoods Solar sells kits to harden against EMP. I am wondering how > effective they would be. > > Drake > > > > Drake Chamberlin > > Athens Electric LLC > > Ohio Electrical Contractor’s License 44810 > > CO Master Electrician’s License 4526 > > NABCEP Certified PV Installation Professional > > --- > > > > On 2023-03-08 11:49, Glenn Burt via RE-wrenches wrote: > > I would review Sol Arks website as they say they are immune. Probably have > something to back that up published there. > > -Glenn > Sent from my 'smart'phone, so please excuse typos and spelling errors. > > ------ Original message------ > From: Marco Mangelsdorf via RE-wrenches > Date: Wed, Mar 8, 2023 11:37 AM > To: RE-wrenches; > Cc: Marco Mangelsdorf; > Subject:[RE-wrenches] PV and EMP > > Aloha all, > > 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? > > Mahalo, > marco > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > <http://re-wrenches.org/> > > List Address: RE-wrenches@lists.re-wrenches.org > <mailto:RE-wrenches@lists.re-wrenches.org> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > <https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/> > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org> > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > <http://www.re-wrenches.org/etiquette.htm> > > Check out or update participant bios: > http://www.members.re-wrenches.org <http://www.members.re-wrenches.org/> > > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > <http://re-wrenches.org/> > > List Address: RE-wrenches@lists.re-wrenches.org > <mailto:RE-wrenches@lists.re-wrenches.org> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> > > There are two list archives for searching. 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