This is all great advice.
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.
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
right where it should be, at the exit point.
An additional ferrite toroid core used in common-mode filter hookup
(BOTH hot and cold wires run through the center) as close to
the unit as possible on AC and DC wires as well as possibly,
communications lines exiting the units. Battery temperature sense also,
possibly.
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
parts themselves and possibly information.
boB
K7IQ
On 10/2/2020 8:57 AM, Dave Angelini Offgrid Solar wrote:
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.
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.
" EMC directive FCC and Industry Canada Class B " Below are 2 of the
ways that the issue is defined and measured.
So-called "*radiated emissions*" are picked-up *with a* test-antenna
and can come from all parts of the product INCLUDING the cables it
uses (power and module interconnects). *Conducted emissions* are
measured directly as voltages or currents on the cables used by the
product.
*Dave Angelini Offgrid Solar "we go where powerlines don't"
http://members.sti.net/offgridsolar/ e-mail [email protected]
<mailto:[email protected]> text 209 813 0060*
On Fri, 2 Oct 2020 09:35:34 -0600, Mac Lewis <[email protected]> wrote:
Hi Wrenches,
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.
Thanks!
--
Mac Lewis
"Yo solo sé que no sé nada." -Sócrates
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