Wind Gen/alt connections

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Re: Wind Gen/alt connections

Postby harrydiculous » Wed Apr 04, 2018 10:04 am

Thanks Jaahn & others. Shall do.
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Re: Wind Gen/alt connections

Postby davidg » Thu Apr 05, 2018 1:25 am

jaahn wrote:
harrydiculous wrote:Can I install an RCD unit between the inverter & line out?

Hi Harry, :)
Yes. You can get a portable one at any hardware store with an over load and RCD incorporated.


For an RCD even portable ones there must be an earth involved for it to work, if an inverter is "floating" then an RCD will not do a thing. There must be a way for a current imbalance to occur or an RCD will not function.

An earth allows for an alternate current path, without an earth there is no way to complete a circuit, that is not all bad news though as provided the inverter is truly floating and person only contacts one wire ie either the active or the neutral then they will not complete a circuit and the result is that they will not receive an electric shock, yes this option is covered in AS-3000 although it's not very common along with a sort of "earth" connection, but it's definitely not to ground, if this system is not done correctly and kept correct then it could be dangerous.
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Re: Wind Gen/alt connections

Postby LeighC » Thu Apr 05, 2018 4:40 am

What are general thoughts on the below RVD? Would this be suitable in this situation?
Below link
https://www.rvdsafe.com.au/product/resi ... evice-rvd/

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Re: Wind Gen/alt connections

Postby harrydiculous » Thu Apr 05, 2018 8:10 am

So,
- I have purchased an RCD Safety Switch.
- Noticed that in the back of the Inverter, there is an earth Lug.

I can just drive an earth peg into the ground (A length of pipe) and attach a wire to this Lug. Problem solved?

(All 240 Volt leads from this Inverter will be of the three pin type.)

There must be, though, hundreds of these unearthed (floating) units about the country in Caravans. LeighC' unit in the previous post, may be a solution.
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Re: Wind Gen/alt connections

Postby jaahn » Fri Apr 06, 2018 8:27 am

Hi :)
There are discussions on the Grey Nomads and caravan forums about this issue.
Perhaps the qualified electrical people on here would like to discuss it correctly with reference to the recommendations in the standards.
My understanding is that it is not recommended to connect an earth stake to an independent floating unit like an inverter or a generator unless it is done correctly. To function correctly it must be done to the standard or it may introduce extra risk.
The RVD has been developed recently in Australia to cover this situation and does work but is not commonly fitted yet. Is it covered in the standard ?
It is true that there are now many of these floating units used now and they are being used in situations that are possibly not safe by persons who have not much idea of the risks. A caravan is also a floating unit in itself if it is not connected to earth. The safety standards of the cheap 240V inverters or generators would be a worry to me anyway and used in mobile applications and outdoors ??
Easier and safer to stick to the 12V stuff for every thing.
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Re: Wind Gen/alt connections

Postby davidg » Sun Apr 08, 2018 10:02 am

jaahn wrote:Hi :)
The RVD has been developed recently in Australia to cover this situation and does work but is not commonly fitted yet. Is it covered in the standard ?

NO, just because it's been marketed does not mean it meets any STD requirement or really improve safety.

There's been lots of products released on the market for caravan and nearly all have disappeared again, they really did not add any additional electrical safety at all. Doing the wiring properly and following applicable STD's or exceeding them is the better choice. RCBO's will work in caravan's when the wiring is installed correctly, even when a caravan is truly floating.

jaahn wrote:It is true that there are now many of these floating units used now and they are being used in situations that are possibly not safe by persons who have not much idea of the risks. A caravan is also a floating unit in itself if it is not connected to earth. The safety standards of the cheap 240V inverters or generators would be a worry to me anyway and used in mobile applications and outdoors ??
Easier and safer to stick to the 12V stuff for every thing.
Jaahn

Properly floating (Isolated) is much safer than people think.

solar-wind-gear/topic6947-10.html#p52902

Two standards for generators one uses an RCD/RCBO the does not, isolated version, the correct one depends on type of use and understanding why.
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Re: Wind Gen/alt connections

Postby harrydiculous » Thu Apr 26, 2018 5:31 pm

Thanks for your help thus far. It's now running (of sorts):-
ImageIMGP3168 by jibbonpoint, on Flickr

ImageIMGP3170 by jibbonpoint, on Flickr

ImageIMGP3254 by jibbonpoint, on Flickr

I've ordered some more solar panels identical to the ones fitted and I'll buy an identical 100 amp/hr battery.

I'm having trouble deciphering the instructions for the Economic Hybrid Voltage Regulator & I can't find anything on Google.

Here are instructions that I don't follow in setting up:-

Imageins by jibbonpoint, on Flickr

I've just entered (I think) 15 hours & 6 hours to get it going. But I've no idea what it all means.

Any assistance?

Thanks again.
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Re: Wind Gen/alt connections

Postby harrydiculous » Sun Apr 29, 2018 2:01 pm

Hi Again

I've reset T1 & T2 to zero hours.

The controller is currently showing Ub @ 12.8 volts; Which, I understand, is power flow out.No wind & cloudy.

I've made these changes as a result of this video on youtube:-

https://www.youtube.com/watch?v=DtYSpLd1v0Y

I'm not using any lamps.

These "lamps:" are these settings something to do with "dumping" power when over generating?
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Re: Wind Gen/alt connections

Postby Gordon-Loomberah » Sun Apr 29, 2018 2:39 pm

I'm not sure that you'll ever get much out of that wind turbine in its current location, it appears to have a lot of tall trees around it. Wind generators require non-turbulent air to function properly. Ideally they should be located well above, and well away from any surrounding obstacles.

If you aren't using the load terminals, it probably wont make any difference what you enter for load times.

I would think that Ub = battery volts, not an indication of power.
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Re: Wind Gen/alt connections

Postby harrydiculous » Sun Apr 29, 2018 2:52 pm

Thanks Gordon, (I meant volts - emf. My mistake).

I understand that it should be up about 10 metres. I can lift it another 1 metre. To go higher may not please the neighbours although they are supportive. There's clear air from the South, which is where our bad weather comes from. There's another 160 watts of PV coming.

I can also put a caravan port over the caravan and add more cells.

Now I know what the terminals are for. :)
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