SolarEdge inverters have an export control function if you install an external meter to them. They can be programmed to prevent any net energy export, or to limit that export to a specific amount (if you had a large system with a relatively smaller utility transformer for example).
Here is a link to their system: http://www.solaredge.com/sites/default/files/export_limitation_application_note_NA.pdf It would limit export power in real time, not energy over time, so if the dump load is to prevent a net monthly export of kWh… then I have no clue. With Regards, Daniel Young, NABCEP Certified PV Installation ProfessionalTM: Cert #031508-90 From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kristopher Schmid Sent: Wednesday, September 07, 2016 2:31 PM To: RE-wrenches <re-wrenches@lists.re-wrenches.org> Subject: [RE-wrenches] Grid tie with dump load? REWs, I have a client that asked me if i can install a battery free grid tied system and have a dump load activate when it is overproducing. I am at a loss, here. Anyone have ideas? A CT on the line side that would activate a relay while current is flowing to the utility? Thanks, Kris -- Shine On! Kris Schmid Legacy Solar, LLC 864 Clam Falls Trail Frederic, WI 54837 www.legacysolar.com <http://www.legacysolar.com> 715-653-4295 NABCEP Certified PV Installer Licensed Wisconsin Master Electrician BSEE
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