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From: Tony <[email protected]>
To: [email protected]
Sent: Fri, September 24, 2010 9:31:50 AM
Subject: Re: LF: Photovoltaic Installation

Hello Hugh.

I have a wind turbine and an inverter which is an ordinary computer UPS, and it does give blanket noise all across LF, MF & HF. It's only when you get to VHF that it can't be heard.
I have no idea how far it radiates but I will test it out for you later and see how far away I can get before I lose the noise.

I have the advantage of course that I can switch it all off when I play radio.

Tony, EI8JK.


On 24/09/2010 08:53, Hugh_m0wye wrote:
> Greetings to the LF group,
> My neighbour informs me that she is intending to have photovoltaic panels installed on her roof, in a scheme where she gets free electricity (all subsidised by the government of course!)
>
> My concern is the possibility of high levels of interference generated by the kW inverters needed to pump electricity back into the National Grid. I would guess that such invertors probably operate kHz and might be expected to interfere with LF and VLF reception. The wiring to all the panels on the roof might act as a very good aerial!
>
> It also occurs to me that any lack of RF immunity to my transmissions, in the new installation, might have dramatic consequences - I know from studying electrical engineering at college that connecting a generator to the grid with incorrect phase leads to a big bang!
>
> Has anyone any experience of such installations?
> Perhaps someone has one nearby and could comment on any EMC effects.
> 73
> Hugh
>
>
>