Array Voc > 140V for MX-60 [RE-wrenches]
Kelly Larson
solarwrench at asis.com
Thu Jan 18 10:01:39 PST 2007
Fellow Wrenches,
Has anyone figured out a kluge for the Voc too high in the morning
problem on the input from the array to the MX-60? I have run into two
systems (not designed by me) where the MX-60 doesnt connect until later
in the morning on cold days due to this.
On one, the array is mounted on a 2 story home under the ridge cap,
which at this point is not accessible, (because of weather), so I cant
just go around the last module in the strings. I figure some
diode/relay/electronic thingy
So I am looking to drop about 10 - 15V, (from 150Voc to 140V, or better,
135V), with 20A max current
Thank you in advance for any ideas,
Kelly
Kelly Larson
BSEE, Ca C-10 #868189, Energy Educator
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