Todd,
The SQF runs on 30V or more, but is happiest above 90V according to Grundfos, and I have never heard anything suggesting a disadvantage to the higher voltages. I think the 1400 watts is a theoretical maximum, and the pump will vary its operation and output according to the available wattage (not the available current). Most SQFs effectively max out at around 800-900 watts. In fact, my pump curves on the 11SQF-2 max out at 900 watts at 300' of head. You'd probably do just fine with a single series string of 10-12 modules. What I don't know is to what degree you need to worry about low temperature VOC limits; I'd be careful about getting too close to 300V. Allan
Allan Sindelar
On 5/30/2013 4:29 PM, Todd Cory wrote:al...@positiveenergysolar.com NABCEP Certified Photovoltaic Installer NABCEP Certified Technical Sales Professional New Mexico EE98J Journeyman Electrician Founder and Chief Technology Officer Positive Energy, Inc. 3209 Richards Lane (note new address) Santa Fe, New Mexico 87507 505 424-1112 www.positiveenergysolar.com
this question is part 2 about the customer with the used astropower 75 watt modules - |
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