I recently had to megger (IRT) a Solaredge array to debug an inverter failure. I didn't think it possible, but a SE tech told me how to do it without frying the optimizers. I had to float, then short both pos/neg string leads and then megger this connection to ground. I'm not sure if it meggered all the way through to the panels or just through the optimizer series output. I assume the module input is isolated under this condition. Anyone have experience IRT'ing Solaredge or other (Enphase, Tigo, etc.) mod-level electronics? Thanks.
Kirk Herander VT Solar, LLC Proven PV provider since 1991 www.vermontsolarnow.com dba Vermont Solar Engineering NABCEPTM Inaugural Certificant VT RE Incentive Program Partner 802.863.1202
_______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
