HPV-22 November 30, 2011, 11:43:03 am Yahoo Message Number: 127003Can the LD stock solar controller handle 400w ?
Re: HPV-22 Reply #1 – November 30, 2011, 12:04:40 pm Yahoo Message Number: 127006"Can the LD stock solar controller handle 400w ?" You didn't say for what year, so I'm going to assume recent models. The answer is yes; 400 watts is the maximum rated capacity of the HPV-22 and HPV-22B controllers that have been used since 2005.Andy Baird http://www.andybaird.com/travels/
Re: HPV-22 Reply #2 – November 30, 2011, 12:25:02 pm Yahoo Message Number: 127008QuoteYou didn't say for what year, so I'm going to assume recent models. The answer is yes; 400 watts is the maximum rated capacity of the HPV-22 and HPV-22B controllers that have been used since 2005. I notice the Heliotrope charge controllers are no longer listed on the Amsolar site. Instead, Morningstar and Blue Sky are the brands.Steve
Re: HPV-22 Reply #3 – November 30, 2011, 12:43:26 pm Yahoo Message Number: 127011QuoteCan the LD stock solar controller handle 400w ? Here's my take: The HPV-22 can regulate an output charge current up to 22 Amps. It is rated to handle up to 400W of solar panels, BUT: If the batteries are discharged enough to demand the full solar output, i.e. about 12V, then 400/12 = 33.3 Amps. If we assume that in this northern hemisphere locale the panels will only deliver about 80% of their rating, and that the Heliotrope MPPT conversion efficiency is about 90%, then 33.3 X 0.8 X 0.9 = 24 Amps. In other words, rating the controller to handle 400W is a bit optimistic, but not too far from reality. It should be safe, however. According to AMsolar, the output is limited to prevent damage.Steve
Re: HPV-22 Reply #4 – December 01, 2011, 09:22:08 am Yahoo Message Number: 127032On our fall trip we went to AM Solar to add 200 watts of solar to the 200 we had installed when we purchased our 2010TK. We also wanted to be able to better monitor our useage and solar gain. After some discussion with AM Solar folks, who by the way are wonderful, we decided to change out the HPV-22 to a IPN 25 peak current controller and battery amp hour monitor. Now, don't jump on me because I am not technical but Steve's calculations are in line with John's explanation to me. Bottom line was that the HPV-22 could carry the load but that in times of peak gain the gain would exceed the capacity of that unit but the only loss would be that additional gain. However, we decided to change to the IPN unit because it would also give us the monitoring capacity that we wanted. Otherwise we would have needed to add a separate monitor. We were out another six weeks after that install and really appreciated the unit because it let us better understand the whole system and our power usage. Patti & Johnhome and hunkered down in the snow in Golden, CO__QuoteCan the LD stock solar controller handle 400w ? Here's my take: The HPV-22 can regulate an output charge current up to 22 Amps. It is rated to handle up to 400W of solar panels, BUT: If the batteries are discharged enough to demand the full solar output, i.e. about 12V, then 400/12 = 33.3 Amps. If we assume that in this northern hemisphere locale the panels will only deliver about 80% of their rating, and that the Heliotrope MPPT conversion efficiency is about 90%, then 33.3 X 0.8 X 0.9 = 24 Amps. In other words, rating the controller to handle 400W is a bit optimistic, but not too far from reality. It should be safe, however. According to AMsolar, the output is limited to prevent damage.Steve[Non-text portions of this message have been removed]
Re: HPV-22 Reply #5 – March 12, 2012, 03:33:10 pm Yahoo Message Number: 129088Before we left Livingston for AZ I added 2x130W panels to the existing 100w panel, installed my Prosine 2.0 inverter and a Bogart meter. Left the existing HPV-22 and the system has been great ! Used 6awg wire for the panel - controller - battery wiring. This morning the controller was indicating -14.8A, when I switched from controller output back to panel output, then voltage, and back it is indicating properly. Everything "looks" correct now, just wondering if anyone else has seen this ? I'd call AM Solar, but sitting here i have VZ Internet, but no AT&T phone service.Dave W
Topic: HPV-22 (Read 7 times)
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Topic: HPV-22 (Read 7 times)
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