Hi Wrenches,
I inherited an off-grid PV system that seems to be significantly under
producing. I have:
12 KC120's (~17V 7A each) paired up 2 in series, for 6 strings terminated
on new 15A breakers in a new Midnite combiner,
Output of combiner passes through a 60A breaker then into a SolarBoost 50
Hi Eric,
Try putting the SolarBoost 50 into EQ. This will bypass the current
limitations and you will see full amps.
If no change, then try with 1 string at a time.
If still the same then bypass the controller and test with your clamp on.
This will tell you if its the array or the SB50
Good
I would check each string. I have seen many failed 120 watt Kyocera modules.
They had a delamination problem.
David Katz
Sent from my HTC smartphone on the Now Network from Sprint!
- Reply message -
From: "Eric Stikes"
To: "RE-wrenches"
Subject: [RE-wrenches] Troubleshooting Off-grid
Hi Eric,
Check the dates on the KC-120 module label. If any were manufactured between
January 1999 and December 2002, they have or will fail. We have been replacing
these modules for over 8 years now. There was a defective solder joint during
manufacture. Kyocera will still replace them under w
I second what David is saying. I have seen many failed KC120's as well and
they seem to fail most often at the top of the module where some
insulating tape has been used to isolate the cell interconnecting bus as
they pass over one another on their way to the j-box. There will be some
slight eviden
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