Greetings all......I was hoping i could have someone help me confirm a troubled series string on a system we have installed..... System consists of 16 BP 170 W 24V nominal modules......2 strings of 8 modules.....Vmp of each module is roughly 34V and Voc of each module is roughly 41V. One string is under-producing......String 1 Voc is 346V and String 2 Voc is 272V. String 1 Vmp under load is 270V and String 2 Vmp underload is 270V. I am hypothesizing that String 2 has a bad diode on the 3rd panel in and is reducing the Voc of that string by th 2 panels ahead of it in the string. I am hoping to figure this out without removing the entire string and checking each panel if possible..... I think the Vmp is equal due to the fact that both strings are paralleled in the inverter and the 1st string is being pulled to the same level V as the 2nd string under load......Is my logic good? Thanks for the help and advice..... Cheers, Kirpal Khalsa Renewable Energy Sytems
_______________________________________________ List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
