Re: [RE-wrenches] Module defect? Cell interconnections

2015-06-29 Thread Bill Hoffer
Benn I personally would not accept these modules, the defect is what you can see and makes me wonder of how good the remainder of the soldered connection is. It is a red flag and very likely will become a problem in the future under load thermal cycling. Shading of the cell is the least of the

Re: [RE-wrenches] Module defect? Cell interconnections

2015-06-23 Thread Benn Kilburn
Thanks for your comments Brian. I would also consider these to be low grade, even though we did not order or pay for low grade. I did get in touch with the module manufacturer and found out that these did sneak past their QC checkpoint. I was told that their general tolerance for the bus/ribbon

Re: [RE-wrenches] Module defect? Cell interconnections

2015-06-22 Thread Brian Mehalic
I've seen similar on what I considered to be some low grade modules used on a project in Peru. Returning them / doing anything about it wasn't an option due to the remote nature, but I sure didn't like it. Best case, you lose a tiny bit of current due to cell coverage; worst case is internal