Hi Bob Is there any inherent advantage or disadvantage to non transformer inverters?
Jay > On Oct 2, 2020, at 11:27 AM, "[email protected]" <[email protected]> > wrote: > > > > > 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] >> 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 >>> >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org >
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