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Hi Todd (and Allen & Bob-O),<br>
<br>
You can also do the pump sizing online, using WebCAPS from
Grundfos, if you don't have a PC handy:
<a class="moz-txt-link-rfc2396E" href="http://net.grundfos.com/Appl/WebCAPS"><http://net.grundfos.com/Appl/WebCAPS></a>, then click on
"Sizing," and "Renewable Energy Systems". You'll still need to
enter module data, since their database only includes their
modules. You can also select locations, units, etc. like in the PC
version.<br>
<br>
Best,<br>
Louis<br>
<br>
On 5/31/13 10:30 AM, Allan Sindelar wrote:<br>
</div>
<blockquote cite="mid:51A8DE1B.8050903@positiveenergysolar.com"
type="cite">
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<div class="moz-cite-prefix">Bob-O and Todd,<br>
In theory you're right, Bob-O. I find the program awkward to
use, given that it thinks in some weird (Danish?) way, that I
don't use often enough to remember how to navigate. But in this
case my bigger concern would be how to input data for a bunch of
old used Astropower 75s. Astropower's been gone for over ten
years, I think, and data isn't likely to show up on the
backsheets. WINCaps doesn't account for module degradation,
either. <br>
<br>
Todd, I might have a copy of a module spec sheet for the AP75 in
our files at the office. Not sure, as we never used any, but I
collected a lot of that old crap. Contact me off list on Monday
if you need me to look. <br>
Allan<br>
<br>
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<font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
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<span style="font-size: 10pt;">NABCEP Certified Photovoltaic
Installer<br>
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New Mexico EE98J Journeyman Electrician<br>
Founder and Chief Technology Officer<br>
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3209 Richards Lane (note new address)<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
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On 5/31/2013 11:14 AM, Bob-O Schultze wrote:<br>
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<blockquote
cite="mid:A6F93E27-C7F5-4CC5-8068-76FB814C5C32@electronconnection.com"
type="cite">Todd,
<div>The easiest way to do this is to use the Grundfos pump
sizing software. Regrettably, it only runs on a PC. You can
input the specs of the module, the head and the GPD desired
and it will size the array for you. Once you know the # of
modules in series you can use the Imp and Vmp derated for
temperature which will get you in the right ballpark for
sizing the conductors. Won't be accurate, but close 'nuff.</div>
<div>Good Luck, bob-O</div>
<div><br>
<div>
<div>On May 30, 2013, at 3:29 PM, Todd Cory wrote:</div>
<br class="Apple-interchange-newline">
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charset=ISO-8859-1">
<div text="#009900" vlink="#551a8b" alink="#ee0000"
bgcolor="#ffffff" link="#0000ee"> <font size="+1"><font
face="Arial">this question is part 2 about the
customer with the used astropower 75 watt modules -<br>
<br>
he has a grundfos 11sqf-2 already set by the well
driller. the input specifications for the cu200 pump
& controller are 30 to 300 vdc, 1400 watts, 8
amps. <br>
<br>
this will initially be running array direct and i am
trying to figure out the wire loss from the modules to
the cu200 controller. to do that i need voltage and
current numbers. im assuming the higher the voltage
the lower the running current? <br>
from the specs above: 1400 watts divided by 8 amps =
175 volts... so if i feed this with closer to 300
volts would that mean the running current would drop
to around 4.6 amps?<br>
<br>
thanks for the help,<br>
<br>
todd<br>
<br>
<br>
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