[RE-wrenches] Ferrites for EMP/solar flare protection?

bob at midnitesolar.com bob at midnitesolar.com
Tue Feb 8 15:25:13 EST 2022 

No Problem !  If one of our SPDs break from a nuclear EMP, just send it 
back and we'll replace it !

Did you realize that if you rearrange the first two letters of the word 
"nuclear", you get unclear ?

boB


On 2/8/2022 9:35 AM, toddcory at finestplanet.com wrote:
>
> What about Midnight SPDs?
>
> Todd
>
> On February 7, 2022 7:37:04 PM "Glenn Burt" <glenn.burt at glbcc.com> wrote:
>
>     I am not seeing how ferrites can stop EMP. The frequencies
>     involved will affect diode junction level electronics.
>
>     Ferrites may lessen the induced surge picked up by the conductors
>     between the array and the inverter/charge controller, but unless
>     the electronics are hardened too, I don’t believe it.
>
>     Glenn
>
>     *From:* RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org>
>     *On Behalf Of *Maverick Brown
>     *Sent:* Monday, February 07, 2022 12:52 PM
>     *To:* RE-wrenches <re-wrenches at lists.re-wrenches.org>
>     *Subject:* Re: [RE-wrenches] Ferrites for EMP/solar flare protection?
>
>     Hans,
>
>     Here is a split ferrite kit (various sizes) from Mouser.com
>     <http://Mouser.com>:
>
>     https://www.mouser.com/ProductDetail/Laird-Performance-Materials/K-404-EMI-A-LG?qs=GedFDFLaBXEg9IWU3Su8DQ%3D%3D
>     <https://www.mouser.com/ProductDetail/Laird-Performance-Materials/K-404-EMI-A-LG?qs=GedFDFLaBXEg9IWU3Su8DQ==>
>
>     Sol-Ark makes an EMP hardened inverter and that kit comes with
>     ferrite cores for each solar panel. Both normal and EMP version
>     come with ferrite cores for the battery cables, Schnieder 600V
>     solar charge controllers comes with cores and older inverters also
>     came with cores. so, it seems cores are good even for regular
>     systems, such as to combat back EMF from larger motor loads /
>     inductive loads.
>
>     So, the bottom line is that is helpful to block line surges by
>     using ferrite cores to suppress voltage spikes & surges. And like
>     lightning, you can do the best that you can do and too many
>     parameters can guarantee anything.
>
>     I going to investigate further and make kits for my own customers.
>
>     Good luck!
>
>     Maverick
>
>     Maverick Brown
>     Off-Grid Solar Commander since 2006
>     *Maverick Solar Enterprises, Inc.*
>
>     * • Solar Commander Remote Power*
>
>     * • SunFlow Systems Cathodic Protection
>     *maverick at mavericksolar.com
>     512-460-9825
>
>
>
>         On Feb 7, 2022, at 11:24 AM, Hans Frederickson
>         <Hans at fredelectric.com> wrote:
>
>         Wrenches,
>
>         One of our grid-tied solar + storage customers with a
>         SolarEdge StorEdge / LG Chem RESU10H system found some
>         information online about protecting solar systems from an EMP:
>
>         Solar Power Ferrite Bundle – Practical Disaster Preparedness
>         for the Family (disasterpreparer.com)
>         <https://disasterpreparer.com/product/solar-ferrite-bundle/>
>
>         Our customer is asking for our recommendation on this. We have
>         used Ferrites for filtering out inverter noise but I’m not
>         familiar with the idea of using them for protection from EMPs.
>         Does anyone on this group specify or recommend these sorts of
>         products for that purpose? Is there any historical evidence of
>         EMPs being a threat to solar systems?
>
>         Thanks,
>
>         -Hans
>
>         *Hans Frederickson,*President
>
>         <image001.png>
>
>         *www.cascadiasolar.com »* <http://cascadiasolar.com/>
>
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