Originally posted by jainsushant
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Grid Tie System with Standby Generator
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Originally posted by russ View PostHe is history already.
The anti-islanding safeties on a GTI seems to be outside the grasp of a lot of people not familiar with this technology no matter how many times you try to explain it to them.Comment
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Originally posted by SunEagle View PostI guess if you ask the same question 100 times someone will give you the answer you are looking for.[SIGPIC][/SIGPIC]Comment
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Originally posted by russ View PostTThen the other 1000 are promptly ignored and the agreeable fool given a promotion.SunnyBoy 3000 US, 18 BP Solar 175B panels.Comment
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Originally posted by inetdog View Postof course.[SIGPIC][/SIGPIC]Comment
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Solaredge Grid Tie Inverter and Generac Standby Generator
Originally posted by Sunking View PostReal simple, if you loose commercial power, the solar PV turns off, the automatic transfer switch (ATS) operates to isolate you from the grid as designed and to electrical codes, and the generator picks up the load in the house.
The PV system will not reconnect until commercial power has been restored for about 5 minute without interruption. Once commercial power is restored, the generator turns off, the ATS re-connects you back to commercial power, and then the PV system will turn on when all is clear
Thanks.Comment
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Originally posted by GlennT View PostThis is an old message I found while researching my situation, and I wanted to see if you still maintain it works this way. I've found conflicting information on how this may play out. How does the PV inverter differentiate between grid power and generator power? I've been told that my Generac power is "grid quality".
Thanks.
Grid Tie, the GT inverter just shuts off when the grid fails. The transfer switch isolates the house from the GT and the Grid, so the generator can power just the house (not the GT inverter)
For off grid:
My XW has a wider range of acceptance for AC2 (generator) than it does for AC1 (grid).Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-ListerComment
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[QUOTE=Mike90250;177964]It Depends. Different brands have differences.
Grid Tie, the GT inverter just shuts off when the grid fails. The transfer switch isolates the house from the GT and the Grid, so the generator can power just the house (not the GT inverter)"
But my GT inverter is not connected on the grid side of the transfer switch. It's on the house side. I think in this case, the generator would again provide AC power to the GT inverter and it may attempt to parallel with the generator. I'm just not sure what it will do.Comment
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Originally posted by GlennT View PostThis is an old message I found while researching my situation, and I wanted to see if you still maintain it works this way. I've found conflicting information on how this may play out. How does the PV inverter differentiate between grid power and generator power? I've been told that my Generac power is "grid quality".
Thanks.
If generator power is available on AC2 the unit can be programmed to operate in grid-tie mode with the generator as the source. Since the unit is measuring current (and power) flow from the generator, the GTI output can be throttled back to prevent back feeding the generator. And any remaining solar power can go to the batteries.
Search the forum for "generator support" and you will find some very good threads on configuring this mode.
Not all hybrid inverters have this capability. Some Outback and some Xantrex/Schneider models do.
Just to clarify, there is a transfer switch on AC1 only, but the AC2 input would not be connected to the house lines (including the GT function) unless the AC1 transfer switch is open.
The difference is that when AC1 input goes away the inverter will work with or without an input on AC2, it will just work in a different control mode with it than without it.Last edited by inetdog; 10-07-2015, 05:31 PM.SunnyBoy 3000 US, 18 BP Solar 175B panels.Comment
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Originally posted by GlennT View PostBut my GT inverter is not connected on the grid side of the transfer switch. It's on the house side. I think in this case, the generator would again provide AC power to the GT inverter and it may attempt to parallel with the generator. I'm just not sure what it will do.Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-ListerComment
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Originally posted by Mike90250 View PostIf you connect a generator and a GT inverter together, on a sunny day, you are only safe for as long as your house loads exceed your solar power.
You say you get a lot of smoke....but wouldn't the GT inverter (SolarEdge) recognize some type of fault condition and shut itself off, or open a OCPD?Comment
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Originally posted by GlennT View PostThat's the way it seems to me also, but sunking says it's just not a problem because apparently, the GT inverter knows the difference between generator power and grid power, and won't try to parallel with the generator.
You say you get a lot of smoke....but wouldn't the GT inverter (SolarEdge) recognize some type of fault condition and shut itself off, or open a OCPD?OutBack FP1 w/ CS6P-250P http://bit.ly/1Sg5VNHComment
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Originally posted by ButchDeal View PostIf the Generator happens to put out good clean current for long enough the SolarEdge will think that the grid is back and turn itself on, and try to dump lots of power into the generator, thus causing smoke and blown generator.Comment
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Originally posted by GlennT View PostOk, but are you speaking from experience, or conjecture? I would like to have someone chime in who's actually had an installation like mine and see what they discovered. Thanks for your input.OutBack FP1 w/ CS6P-250P http://bit.ly/1Sg5VNHComment
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