Hi all.. I'm new here, but back in late '07 we had a 6kw system installed here in sunny CA by a contractor. Long story short, we've had nothing but issues with these Fronius inverters which are now out of warranty. we had a number of them replaced under the warranty as one of the two would pretty much fail annually.
Our system has two strings of Sharp panels -- I don't recall the exact configuration anymore nor the exact Sharp panels -- they looked like lightweight concrete roof tiles in shape. Anyway, I vaguely recall there being perhaps 108 of those panels.
So, one inverter is still functioning, but the other is dead. They almost always seem to crap out in the same manner -- the logic that senses grid voltage croaks and then the inverter shuts off and that's the end of it. What I'm looking into and what I ultimately need your input on is whether I can swap these two inverters for a pair of Sunny Boy 3.0-US (240v) models to pretty much match what the IG3000s specs are (more or less) -- if I'm reading its spec sheet properly. Is this a good plan or ??? This is SCE (So-Cal Edison) territory here and they've had issues with line power quality from time to time -- most recently a few years ago a local transformer was putting out 175V instead of 110.. It fried a bunch of stuff in the house.
My questions are as follows :
1) Are the Sunny Boy's pretty good as I'm under the impression that they are?
2) Will power quality issues nuke them as well as they did with the Fronius's or are they better able to handle power quality issues? This is not an issue 99% of the time but occasionally pops up.
3) Ive done house wiring before and know about AC and DC power and whatnot -- is this something I should leave to a solar contractor or can I do the swap using common sense (ensuring I don't electrocute myself obviously, taping wires so they don't short during the swap, etc)..?
4) Are there any reputable and reasonably priced places to get the offending Sunny Boy inverters if they are in deed a good match?
I think that's about all I've got for the moment.. Thanks so much!!
Our system has two strings of Sharp panels -- I don't recall the exact configuration anymore nor the exact Sharp panels -- they looked like lightweight concrete roof tiles in shape. Anyway, I vaguely recall there being perhaps 108 of those panels.
So, one inverter is still functioning, but the other is dead. They almost always seem to crap out in the same manner -- the logic that senses grid voltage croaks and then the inverter shuts off and that's the end of it. What I'm looking into and what I ultimately need your input on is whether I can swap these two inverters for a pair of Sunny Boy 3.0-US (240v) models to pretty much match what the IG3000s specs are (more or less) -- if I'm reading its spec sheet properly. Is this a good plan or ??? This is SCE (So-Cal Edison) territory here and they've had issues with line power quality from time to time -- most recently a few years ago a local transformer was putting out 175V instead of 110.. It fried a bunch of stuff in the house.
My questions are as follows :
1) Are the Sunny Boy's pretty good as I'm under the impression that they are?
2) Will power quality issues nuke them as well as they did with the Fronius's or are they better able to handle power quality issues? This is not an issue 99% of the time but occasionally pops up.
3) Ive done house wiring before and know about AC and DC power and whatnot -- is this something I should leave to a solar contractor or can I do the swap using common sense (ensuring I don't electrocute myself obviously, taping wires so they don't short during the swap, etc)..?
4) Are there any reputable and reasonably priced places to get the offending Sunny Boy inverters if they are in deed a good match?
I think that's about all I've got for the moment.. Thanks so much!!
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