Technical question regarding inverters

Sterlingtimes

I have 14 Enphase microinverters on the roof.

If I isolate the solar system by turning the big switch where the solar cable entering the house connects to the distribution board, does that immediately switch off the microinverters?

I am trying to identify possible causes of radio interference and want to eliminate the inverters from my investigation.

Dave_Fowler

Sterlingtimes wrote: »

I have 14 Enphase microinverters on the roof.

If I isolate the solar system by turning the big switch where the solar cable entering the house connects to the distribution board, does that immediately switch off the microinverters?

I am trying to identify possible causes of radio interference and want to eliminate the inverters from my investigation.

If you turn off the 'big switch' during hours of darkness, there can be no output of any kind from the inverters.

My SolarEdge inverter kills long wave and most of medium wave AM broadcasts if you get within a few yards of the inverter when the inverter is producing power.

Dave F

digbydog

Does that have any impact on broadband WiFi signal that you know of?

I'm due to have a SolarEdge system installed in the garage and on the other side of the wall is the broadband router.

Dave_Fowler

digbydog wrote: »

Does that have any impact on broadband WiFi signal that you know of?

I'm due to have a SolarEdge system installed in the garage and on the other side of the wall is the broadband router.

Looking at it from the other way round, my SolarEdge inverter is at the extreme end of the range of my router. Moving around with my tablet close to the inverter doesn't show up any reduction in the signal level or quality. I think all the interference is at low frequency and doesn't extend any where near the uhf or microwave bands.

Dave F

Sterlingtimes

Dave_Fowler wrote: »

If you turn off the 'big switch' during hours of darkness, there can be no output of any kind from the inverters.

My SolarEdge inverter kills long wave and most of medium wave AM broadcasts if you get within a few yards of the inverter when the inverter is producing power.

Dave F

Thank you, Dave, for your help. My first stage of experiments would indicate that the microinverters are not contributing greatly to the interference. The powerline used in association with the inverters appears to use a single frequency for the telemetry (I think 144 kHz).

I am now looking for other sources of interference having disabled the powerline in the Sky Q apparatus and substituted the other powerline for BT Whole Home WIFI. Some LED lights create substantial interference within a few metres.