DC to AC Inverter Input range.

hass...@gmail.com

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Mar 1, 2012, 5:06:43 PM3/1/12

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Here is a question: If we have a cell array providing DC, then we are using an Inverter to get AC. The sunlight will come and go, hence, the DC input voltage will rise and fall ...
I've been shopping for an Inverter on the internet, none of the inverters I found have its "minimum input voltage" stated. Most of them says a 24V or 12V inverter, but I am concerned about the minimum threshold for input voltage.

Any one has an idea?

Ron Rosenfeld

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Mar 1, 2012, 6:22:28 PM3/1/12

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The battery bank should smooth out the DC fluctuations. And most inverters have (or should have, if they are designed for this kind of use) a low (and high) voltage cutoff. For my SW5548's, 48V inverter, the low battery cutoff is programmable and I have it set to 44V; as is the high battery cutoff which I have set to 66V.

bob haller

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Mar 29, 2012, 3:39:26 PM3/29/12

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On Mar 1, 7:22 pm, Ron Rosenfeld <r...@nospam.net> wrote:

my best friend has a windmill and solar panels on a battery bank with
inverters to run CF lights.

as the voltage fluctuates the harbor freight inverters go off and on,
its very annoying

you

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Apr 3, 2012, 2:41:23 PM4/3/12

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In article
<7523643e-078c-4101...@eb6g2000vbb.googlegroups.com>,

bob haller <hal...@aol.com> wrote:

> my best friend has a windmill and solar panels on a battery bank with
> inverters to run CF lights.
>
> as the voltage fluctuates the harbor freight inverters go off and on,
> its very annoying

That is what you get when you buy cheap Chinese Inverters.... cheap
Crap... If you had invested in OutBack gear you wouldn't have these
issues....

DLC

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Apr 5, 2012, 1:06:17 PM4/5/12

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It sounds to me that the problem is more likely to be an in-adequate
battery bank.

Mho

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Apr 5, 2012, 3:17:40 PM4/5/12

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Baloney!

Inverters may have larger tolerances but when there are clouds and no DC,
you get no AC either.

Try reading the OP's text and stop hijacking his thread.

--------
"you" wrote in message news:you-A69A5A.1...@news.starband.net...

Pete S

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Apr 6, 2012, 7:08:50 PM4/6/12

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He didn't even say he had any batteries. If he has none, I wouldn't suggest
an inverter at all.

Pete Stanaitis
----------------------------------------------------------------------------------

argusy

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Apr 6, 2012, 6:23:53 PM4/6/12

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Oh, you're right, he didn't say he had any batteries.

"my best friend has a windmill and solar panels on a battery bank with

inverters to run CF lights." (OP's statement)

I take it that you don't regard a 'battery bank' as a set of batteries.

OK. I can live with that. The rest of the world mightn't.

Graham

argusy

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Apr 6, 2012, 7:01:55 PM4/6/12

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On 07/04/12 8:38 AM, Pete S wrote:

This is pissing me off!
I've reset the clock several times, and STILL it gets reverted back to DST.
DST has finished south of the equator so this is really, really annoying me,
especially as the other PC and two laptops are correct.

(referring to my last post, which appears BEFORE the post I responded to!!)

graham

ricky.ge...@gmail.com

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Jul 1, 2012, 3:05:03 AM7/1/12

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http://www.facebook.com/pages/Solar-Wind-Projects-Home/268488803203806
I post other results plus mine. From my on experience is that it need at least 7 volts to turn on & make power from my grid tie inverters.