[RE-wrenches] AC (only) Diversion

[Drake]

You could use Morning Star relay driver to control the AC dump load. 
I have one for my system, but have not yet installed it, but have 
programmed it on my computer.  If it works as designed, it should be 
perfect in conjunction with a relay.



At 04:42 AM 10/14/2012, you wrote:
>Hi there,
>
>Is there an 'off the shelf' low cost product that will divert 
>exported energy to a load?
>
>I have put thought into this and have a simple solution but need to 
>know if it is worth while marketing it.
>
>
>Carl Emerson
>Free Power Co.
>Land line +64 9 473 4286
>Mobile +64 22 630 9689
>Email   emerson at freepower.co.nz
>Web   www.freepower.co.nz
>
>
>----------
>From: re-wrenches-bounces at lists.re-wrenches.org 
>[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Chris Mason
>Sent: 13 October 2012 2:17 p.m.
>To: RE-wrenches
>Subject: Re: [RE-wrenches] AC (only) Diversion
>
>It is called a reverse current relay, use it to to run on a water 
>heating contactor when there is current to the grid.
>This is a problem I have struggled with for ages. We do not get 
>credit for export so I have been looking for a good use for free 
>electricity, have not found one yet.
>On Fri, Oct 12, 2012 at 3:36 PM, Nathan Stumpff 
><<mailto:Nathan at arcticsun-llc.com>Nathan at arcticsun-llc.com> wrote:
>Wrenches,
>
>We are working on the design for a system where we will be using 
>grid-tied wind and solar but will not be able to net-meter the 
>project (we can interconnect but the meter only runs one way.) 
>Anything we use on site is worth 100%, any production that goes back 
>to the grid is lost forever to the customer. What we would like to 
>do is monitor all solar and wind production, monitor all usage, and 
>then be able to dump every watt-hour of over production as heat, 
>there is plenty of (thermal) storage capacity.
>
>If this were a battery based system I know how I would approach this 
>and what equipment I would spec, but so far I am having a hard time 
>coming up with a  solution. Anyone have any suggestions for products 
>or strategies in this case? Something like an eGauge with 
>programmable PWM relay outputs?
>
>Any thoughts or suggestions are most appreciated,
>-Nathan
>
>
>--
>Nathan J. Stumpff - Arctic Sun, LLC
>NABCEP Certified PV Installer #091209-175
>NABCEP Certified Solar Heating Installer #032412-14
><mailto:nathan at arcticsun-llc.com>nathan at arcticsun-llc.com
>Office: <tel:907%2F457-1297>907/457-1297
>
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>--
>Chris Mason
>President, Comet Systems Ltd
><http://www.cometenergysystems.com>www.cometenergysystems.com
>Cell: 264.235.5670
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