Re: [RE-wrenches] Back-up generator/inverter shut-down relay

[Gary Willett]

Benn: What kind of generator? If a Generac, and depending on the controller vintage, it may be possible to install their SMM (smart management module) load shedding module which does not require separate control wires. Down side is they're rated 50A for resistive loads and 40A for inductive loads. If they work, one would be required for each SE7600.   http://gens.lccdn.com/GeneracCorporate/media/Library/content/all-products/transfer-switches/residential-transfer-switches/0L1500-B-SMM-Module.pdf Give Generac a call, or maybe a Wrench who sells/maintains Generacs can comment on the suitability of this solution. I've used them for load shedding, bot not for inverter shedding. I believe one of the 8 settings will always lock out the unit on grid failure / genset operating, as opposed to be one of the 7 total load based priorities. Regards, Gary Willett Icarus Engineering LLC On 9/8/16 6:17 PM, Benn Kilburn wrote: Hey Jerry, Yeah, hard wiring would require quite a bit of trenching and wire.  I was hoping someone would be familiar with a remote relay option or at least a manual reset relay that would include some sort of indicator for when it has shut off the inverters.  Earlier today I was considering what you are suggesting. Seems like it should work.  Anyone care to poke some holes in this theory? Benn Kilburn SkyFire Energy Inc.  780-906-7807 On Sep 8, 2016, at 4:57 PM, jerrysgarage01 <jerrysgarag...@gmail.com> wrote: Wrenches Does not sound like there is an option to hard wire a shut down switch so here is an idea l have used. Program the genny to run at 58 Hz. not yp this will keep the inverters ftom starting up. None of the appliances will know but as long as the inverter programming does not allow for 58 Hz then it will work Jerry Sent via the Samsung Galaxy S™ III, an AT&T 4G LTE smartphone -------- Original message -------- From: Benn Kilburn Date:09/08/2016 7:00 AM (GMT-10:00) To: RE-wrenches Subject: [RE-wrenches] Back-up generator/inverter shut-down relay Wrenches, We are installing 2 SolarEdge SE7600A-US inverters in a grid-tied system that has a 15kw back-up generator on an auto transfer switch. The generator is located in a shed about 300' or more away and the feeders to the house are underground. Inverters are located in the house basement mechanial room along with the house electrical panelboard. We are looking for relay options to shut down the inverters when there is a power interruption, before the generator kicks in.  This could be a manual reset. What are some options you have seen/used for something like this? Thanks, Benn Kilburn  CSA Certified Solar Photovoltaic Systems Electrician, SkyFire Energy Inc 14515 – 121A Ave NW | Edmonton, AB | T5L 2T2 P: 780-474-8992 | F: 888-405-5843 | www.skyfireenergy.com      WE HAVE MOVED! Please note our new address above. _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org

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