Out of curiosity, we have a client with a mix and match set of older PV modules. I did not document any of this but:
Of course they did not want to spend more $ with at the addition of 4 new modules, so we tried out 4 new and 4 older PV on [1] MX 60. Result - voltage was slightly higher than the older modules output and below what it could / should have been. Amperage was around as if they were all older modules. This made the point for the client: we added a second MX60 with one for the new and one for the older modules and the newer modules came in at spec. for voltage and amperage. The older PV backed off as they preformed as before. Not too scientific here, but point is that separation is important. Thanks, Dana Orzel Great Solar Works, Inc E - [email protected] V - 970.626.5253 F - 970.626.4140 C - 970.209.4076 web - www.solarwork.com Responsible Technologies for Responsible People since 1988"
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