<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr">Hi Bob</div><div dir="ltr"><br></div><div dir="ltr">Is there any inherent advantage or disadvantage to non transformer inverters? </div><div dir="ltr"><br></div><div dir="ltr">Jay</div><div dir="ltr"><br><blockquote type="cite">On Oct 2, 2020, at 11:27 AM, "bob@midnitesolar.com" <bob@midnitesolar.com> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">\ufeff
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<p><br>
</p>
<p>This is all great advice.</p>
<p>Remember that long wires can radiate RF. PV lines and the array
can make a good antenna for RFI as well as the battery lines.</p>
<p>I agree with Dave that both of those inverters are more than
likely similar. I know that the XW has a good filter on the
battery line</p>
<p>right where it should be, at the exit point.</p>
<p>An additional ferrite toroid core used in common-mode filter
hookup (BOTH hot and cold wires run through the center) as close
to</p>
<p>the unit as possible on AC and DC wires as well as possibly,
communications lines exiting the units. Battery temperature sense
also,</p>
<p>possibly.</p>
<p>As for resources, Palomar link that Roy gave is a good resource.
Digikey or Mouser might also be a good place to look for both the</p>
<p>parts themselves and possibly information.</p>
<p>boB<br>
K7IQ<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 10/2/2020 8:57 AM, Dave Angelini
Offgrid Solar wrote:<br>
</div>
<blockquote type="cite" cite="mid:7a9df187b0ceb1f23744e0fda5225032@127.0.0.1">
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<p>My advice is it is more about the installation and the distance
from the inverter, and it's devices from the station location,
than the make of equipment. There are other things also that I
do to fix noise and interference. My wife is an extra class
operator and several clients have visited to get ideas. Most any
noise issue can be fixed later, unless you are too close to the
source.</p>
<p>That said I mainly use XW and I would assume Radian is similar.
Below is the spec that XW is test for and has been since 2005.</p>
<p>" EMC directive FCC and Industry Canada Class B " Below are 2
of the ways that the issue is defined and measured.</p>
<p><span>So-called "</span><strong>radiated emissions</strong><span>"
are picked-up </span><strong>with a</strong><span> test-antenna
and can come from all parts of the product INCLUDING the
cables it uses (power and module interconnects). </span><strong>Conducted
emissions</strong><span> are measured directly as voltages or
currents on the cables used by the product.</span></p>
<div>
<pre> </pre>
<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank" moz-do-not-send="true">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net" moz-do-not-send="true">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
</div>
<p>On Fri, 2 Oct 2020 09:35:34 -0600, Mac Lewis
<a class="moz-txt-link-rfc2396E" href="mailto:maclewis1@gmail.com"><maclewis1@gmail.com></a> wrote:</p>
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<div dir="ltr">Hi Wrenches,
<div> </div>
<div>I have a HAM radio enthusiast that needs to replace their
off-grid inverter. He would like the inverter that puts off
the least interference. I don't know a whole lot about
evaluating an inverter for this, but I am reaching out for
recommendations. Needing ~8kVa at 48V.</div>
<div> </div>
<div>Thanks!</div>
<div> </div>
<div><br clear="all">
<div> </div>
-- <br>
<div class="gmail_signature" dir="ltr">
<div> </div>
<div><span style="color: #305a78; font-family: 'times new
roman', serif;"> </span></div>
<div> </div>
Mac Lewis<br>
<br>
<p align="left"><span style="color: #000000; font-family:
Verdana, Arial, Helvetica, sans-serif;"><span style="font-size: small;"><span style="font-family:
arial; font-weight: normal; color: #305a78;"><span style="font-family: 'times new roman', serif;">"Yo
solo sé que no sé nada." </span><span style="font-weight: bold; color: #686868;"><span style="font-family: 'times new roman', serif;">-Sócrates</span></span></span></span></span></p>
</div>
</div>
</div>
</blockquote>
<br>
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