[RE-wrenches] Grid tie with dump load?

[Mike Nelson]

Seems like a very unnecessary complication, The grid is the dump load.

Michael D Nelson
MD Electric & Solar, Inc.
707-684-0064 mobile
707-884-1862 office
www.mdelectricsolar.com
Sent from my iPhone

> On Sep 7, 2016, at 12:54 PM, Daniel Young <dyoung at dovetailsolar.com> wrote:
> 
> 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-bounces at lists.re-wrenches.org] On Behalf Of Kristopher Schmid
> Sent: Wednesday, September 07, 2016 2:31 PM
> To: RE-wrenches <re-wrenches at 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
> 715-653-4295
> NABCEP Certified PV Installer
> Licensed Wisconsin Master Electrician
> BSEE
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