MX60 question [RE-wrenches]

[Bob Ellison]

Be carefull with this, I found that with the Iso 150 / 24 volt panels that 2
was the max I could go in series. The max panel volts would be in the 155
volt range for 3 panels on our coldest winter nights.
Robin told me to move to Hawaii if I wanted to series 3 panels, not here!

Later,
Bob

RE. Ellison
Supplier of;
Alternative Energy Systems & Supplies
34642 Countryman Road
Theresa, NY. USA
                               13691-2076


-----Original Message-----
From: Darryl Thayer [mailto:daryl_solar at yahoo.com]
Sent: Saturday, September 18, 2004 6:51 PM
To: RE-wrenches at topica.com
Subject: Re: MX60 question [RE-wrenches]




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I am not CF but Iknow the answer.
I would put 4 in series giving 4x 30 volts or 120
volts, this is below the 140 volt limit.

The number of series strings you put in parallel Is
limited by the 60 amp output.  So at 120 Voc and 4x24
Vmp or 96 Vmp the current gain is 4x and the max input
per MX60 is Imp < 15 amps.

I hope this is right and perhaps to be safer you
should put only 3 in series or use the limiter circuit
that Bob at Outback has been working on.

thanks
Daryl

--- Marco Mangelsdorf <marco at pvthawaii.com> wrote:
> Master Chris F., Prince of the OutBack,
>
> A design question for you, please.  Say I've got a
> MX60 with a 24 V battery
> bank.  The modules I'd be using have a 24 Vmp and 30
> Voc.  In terms of
> optimum power production, does it matter if I wire
> these modules 2, 3 or up
> to 4 in series?  For whatever it's worth, this would




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