microinverter EMI value at 0 distance point.

[kevinpal]

Correct. I wouldn't worry about stray RF or EMF generated from solar equipment. For that matter if is is approved in the USA it must meet FCC standards which limit the output noise it can generate.

You probably get more RF and noise from a Ham Operator that is next door to you.

Ok. Thank you, SunEagle!

[SunEagle]

You are welcome.

[Mike90250]

My XW inverter has cleaner power than the grid. When your neighbor starts the skill saw, or welder.....

[bcroe]

Correct. I wouldn't worry about stray RF or EMF generated from solar equipment. For that
matter if is is approved in the USA it must meet FCC standards which limit the output noise
it can generate.

You probably get more RF and noise from a Ham Operator that is next door to you.

In fact the radio noise floor (not a danger to anyone) has been steadily rising over my
lifetime. It has the most effect on low band AM radios, HAMs do not like it. I went to a
seminar at FERMILAB attempting to quantify just where we are. It is true equipment is
supposed to meet regulations, but the original thought was that a few such items here
and there would not amount to much, once you moved away from them. What has
happened with transistor and SCR switchers everywhere, is we are saturated with
barely legal noisy devices, it is impossible to get away from them.

My own opinion over the decades of my HAM license, is that every device should be
filtered to the point it cannot be detected outside the same room. Yes that is usually
possible (as I have demonstrated), but industry does not want to pay the cost, and
the public is entirely ignorant of it. Bruce Roe

[J.P.M.]

The fact is that some people installed solar getting this dirty electricity or their neighbors too

https://www.youtube.com/watch?v=Rt9TrbImoQY

Is the because the solar was not properly installed by licensed contractor or something?
Have you tested your lines to see if it is clean?

More crap from utube: "The New Idiot's Bible".

[SunEagle]

In fact the radio noise floor (not a danger to anyone) has been steadily rising over my
lifetime. It has the most effect on low band AM radios, HAMs do not like it. I went to a
seminar at FERMILAB attempting to quantify just where we are. It is true equipment is
supposed to meet regulations, but the original thought was that a few such items here
and there would not amount to much, once you moved away from them. What has
happened with transistor and SCR switchers everywhere, is we are saturated with
barely legal noisy devices, it is impossible to get away from them.

My own opinion over the decades of my HAM license, is that every device should be
filtered to the point it cannot be detected outside the same room. Yes that is usually
possible (as I have demonstrated), but industry does not want to pay the cost, and
the public is entirely ignorant of it. Bruce Roe

I am glad to see you are taking steps to reduce the RF from your equipment.

Long time ago I use to live next to a HAM and when he turned his "beam" in the direction of our TV antenna we would hear him talking on our set. His transmissions were also picked up on most of our radios. But again that was ages ago.

[bcroe]

I am glad to see you are taking steps to reduce the RF from your equipment.

Long time ago I use to live next to a HAM and when he turned his "beam" in the direction of our TV antenna we would hear him talking on our set. His transmissions were also picked up on most of our radios. But again that was ages ago.

HAMs operate under a completely different set of rules, a lot of energy deliberately radiated on a
very narrow bandwidth. Sometime cheap nearby equipment cannot handle it, a cure is usually
possible.

Things like computers, dimmers, brush motors, and much more have no need to radiate at all,
but they do over an extremely wide bandwidth. The radiation is low, but they all add up.
Bruce Roe K9MQG since 1958

[Slick1]

I have a Fronius inverter and when it's operational it creates noise on the power lines throughout the house (a source of EMF in the RF range).

I also tested a variety of other solar PV systems with a centralised inverter and found they are all noisy.

Micro inverters ought to be a bit less noisy than a single centralised inverter?

Has anyone tested their micro inverter system for noise?

[kevinpal]

I have enphase iq7+ micro inverters. I have been working from home these days but I don't here any noise at all.
I also checked EMF in each room before and after installing solar system and there's no difference in terms of EMF.

[Slick1]

Thanks for confirming that Kevin.
Very few people know about noise, even fewer know that solar power is often noisy and even less measure the noise.

What testing method/equipment did you use to check the noise/EMF?

It was RF that got worst as the noise on the power lines increased.

[kevinpal]

I did not measure the noise.
I used this device to measure EMF.

https://www.amazon.com/Advanced-GQ-Multi-Field-Electromagnetic-Radiation/dp/B07JGJ897T?ref_=s9_apbd_orecs_hd_bw_b5TATs3&pf_rd_r=5G3A945R692CHZXV9XQH&pf_rd_p=878bfc67-860b-50b6-b7b1-b0aaed12ceda&pf_rd_s=merchandised-search-10&pf_rd_t=BROWSE&pf_rd_i=5011676011

you might want to take a look at this thread.

https://www.solarpaneltalk.com/forum/diy-solar-panels/assembly-and-connection/321685-yet-another-rf-noise-question/page2

[bcroe]

I have a Fronius inverter and when it's operational it creates noise on
the power lines throughout the house (a source of EMF in the RF range).
I also tested a variety of other solar PV systems with a centralised inverter and found they are all noisy.
Micro inverters ought to be a bit less noisy than a single centralised inverter?
Has anyone tested their micro inverter system for noise?

These switching power conversion devices are inherently terrible noise generators.
The good ones use filters and shielding to contain most of the noise before it
reaches the wiring. My Fronius IG PLUS 7.5s were found to do a good job, no
interference to my radio equipment. If otherwise, I would have built a hardware
cloth shield around them with industrial level filters on connecting wires.

I do not see how micro inverters can compete and put in all the shielding +
filtering that a centralized inverter might have. I would expect them to be a
terrible source of noise which cannot be contained, since it is spread over the
entire array. Bruce Roe

[nwdiver]

These switching power conversion devices are inherently terrible noise generators.
The good ones use filters and shielding to contain most of the noise before it
reaches the wiring. My Fronius IG PLUS 7.5s were found to do a good job, no
interference to my radio equipment. If otherwise, I would have built a hardware
cloth shield around them with industrial level filters on connecting wires.

I do not see how micro inverters can compete and put in all the shielding +
filtering that a centralized inverter might have. I would expect them to be a
terrible source of noise which cannot be contained, since it is spread over the
entire array. Bruce Roe

If you make a ripple in an ocean does it really matter? That's basically what the 'noise' generated by a micro inverter amounts too. Disturbances in the grid happen on the supply and demand sides. A motor starting is orders of magnitude 'noisier' than an inverter.

[SunEagle]

If you make a ripple in an ocean does it really matter? That's basically what the 'noise' generated by a micro inverter amounts too. Disturbances in the grid happen on the supply and demand sides. A motor starting is orders of magnitude 'noisier' than an inverter.

While that motor may create noise when it starts it may not do so continuously. An inverter or just about any Switched power supply will continuously create noise or harmonics which will affect sensitive equipment and sometimes cause them to fail early. That noise can be through RF or Harmonics on the power lines.

[J.P.M.]

If you make a ripple in an ocean does it really matter?

I'd think it might depend on what you're trying to measure as well as the state of the surface of the ocean when the ripple is made, and maybe what's happening with things under the surface.