so i'm now looking at the growatt spf3000 series. there is the lvm-es and the lvm-48p. i think the ES may be the newer model.
the ES has PV input voltage of 120v-250v and the 48P says 60v-115v (145 voc).
i have (10) 180w panels, ~36v vmp, 5a imp and ~45v voc. all 10 are not identical, there are (4) of one type and (6) of the other...though the specs are nearly identical. for this reason, i have them wired only 2 in series to keep the types together (2 pair of one type and 3 pair of the other type). my current c/c has max input of 150v, so 5 in series was too much any way. they are close enough that i could probably make 5 in series if i wanted to.
my question is, at 36vmp, w/ 2 in series, i imagine more often than not i will be over 60v...under what conditions would I fall below the 60v and not charge? it's 7pm here in the northeast and it's still over 67v input (less than 2a). i suppose by the time i drop below 60v, there won't be any power to charge regardless. so it's probably a moot point.
i did say that it was a dumb question!
the ES has PV input voltage of 120v-250v and the 48P says 60v-115v (145 voc).
i have (10) 180w panels, ~36v vmp, 5a imp and ~45v voc. all 10 are not identical, there are (4) of one type and (6) of the other...though the specs are nearly identical. for this reason, i have them wired only 2 in series to keep the types together (2 pair of one type and 3 pair of the other type). my current c/c has max input of 150v, so 5 in series was too much any way. they are close enough that i could probably make 5 in series if i wanted to.
my question is, at 36vmp, w/ 2 in series, i imagine more often than not i will be over 60v...under what conditions would I fall below the 60v and not charge? it's 7pm here in the northeast and it's still over 67v input (less than 2a). i suppose by the time i drop below 60v, there won't be any power to charge regardless. so it's probably a moot point.
i did say that it was a dumb question!