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The GS doesn't appear to have a value for DC Amps (though it seems to have a calibration placeholder)
That's for GS inverters with a negative busbar--which serves as a current sense input. Rev. C boards all have DC current sense functionality--the question is whether the necessary hardware is present! (As of yet, none of them do.)
my battery is all LiFePO4 at present..... primarily Lischen 272AH cells and Eve LF280k cells, but i also have some 5 k pre-built LIFePO4 batteries in use with built in bms etc
the PowerJack inverters have been running continuously for about 2 years at present....
looking to upsize the inverters in due time.
the inverter is the weak link...
the solar panels were all obtained from Santan Solar in pallet quantities freight shipped so very inexpensive....
charge controllers and other pieces and parts added up...
I am not interested in a noisy petrol powered generator or being grid tied... done that for 20 years in Bolivia(((the noisy gas and or diesel generators before the grid came in))))
yes, if the idiots in charge or terrorists do the dumb things with nuclear weapons, none of this will matter....
I am looking at inverter efficiency and standby watt draw to increase efficiency a bit at the moment,,,,
i am an optimist trying to look on the bright side.....
this was brought up to discuss the energy loss at the inverter to actual energy being available for electrical appliances.....( round trip efficiency /in-efficiency )
as some have touted unproven low standby draw of some inverters I thought that would be a good topic to discuss....
it is known that the LF and some HF inverters of PowerJack and other brands use a lot in standby so force more battery storage and more solar panels....to compensate a bit....
I put this under other as it does not need to stick to any particular inverter brand.
thanks for the lively discussion,,, I am hear to learn from others as to their experiences....and to share some experiences.....
😎👍
Today the 3rd of January, 2023 >>>looks like another 5 inches of snow before noon....about 2-4 inches yesterday so winter is hitting hard in South Dakota at the moment 🤔😎
very very large transformers use an oil bath to regulate the high temperatures with radiator fins etc.... not an option for small transformers inside inverters so lots of fans to cool the components or try to get their optimal use size....
I think I was reading that some inverters use small fans and the second fan only comes on when needed.....that was a lf inverter 12000 watt ,,,, forget the brand right now...
keeping the environment of the inverters, batteries, charge controllers etc in the 60 to 75 degree Fahrenheit range is the goal for my off grid solar builds....
heat is the enemy of most all electronics it seems.....
but at the moment I watch the other end and have the components in an insulated outdoor power shed trying to keep above freezing with a couple incandescent light bulbs....works as well as anything and is very simple low tech solution to the cold....
we always ran a light or two in the well pit on the farm where I grew up in the winter....
I do not have a well pump at the present off grid solar PV build so no problems there... but do have and maintain well pumps at 3 rural rental houses...they are grid connected.... hope the grid is reliable there....
very very large transformers use an oil bath to regulate the high temperatures with radiator fins etc....
I don't understand why people believe that "oil filled" in anything produces literal black magic.
All "oil-filled" does is simply conduct heat better (than air!) to a surface that's intended to dissipate the heat. It absolutely does not make heat "disappear." (Oil is preferable to water simply by virtue of being electrically inert, as well as not causing corrosion.)
Air isn't a great conductor of heat--but it's more often than not where heat is dissipated. (That is, unless you're a coal-fired / nuclear power plant that uses river water for cooling.)
not an option for small transformers inside inverters so lots of fans to cool the components or try to get their optimal use size....
Oh people have done it...I've seen photos of people submerging their inverter transformers in a 5-gallon bucket filled with oil. Of course, then you need circulation pumps to circulate said oil through radiators, and fans to keep the radiators cool--the heat does not magically disappear because oil appeared in the equation. True, the increased mass of the oil will slow the heat rise--but at the end of the day, it's also going to take a lot longer to cool down!
I think I was reading that some inverters use small fans and the second fan only comes on when needed.....that was a lf inverter 12000 watt ,,,, forget the brand right now...
Yeah, because the one fan is an AC fan wired directly to the inverter's AC output, and there's no way to turn it off! This is a pretty standard setup in the Chinese LF inverters (i.e. Aims, Sungold Power, possibly Growatt, etc., etc.)
FWIW, the GS handles my submerged well pump perfectly. More than i can say for my U-Power which otherwise has been a pleasant surprise.
On the topic of inverter efficiency... It's a tough thing to optimize in the general sense. For example, in my case, optimizing low-load efficiency is my biggest bang - since my inverter is rarely run over 600W. So that ~30W standby draw adds up quite a bit. On the other hand, the ~1000W overhead when pushing 6kW is only experienced a few minutes each day - at most. It simply doesn't add up to that much, comparatively...
Also, it did occur to me, that in the video that spurred this topic, he was charging a Tesla. On the topic of charging batteries you'll often find the term "PFC". Only getting 2400W of 3000VA capacity might be perfectly expected if the Tesla charger doesn't have good PFC. Indeed, that would be a power factor of 0.8 - which according to google is about the worst case for charging a Tesla.
yes, I think it seems the pfc has an optimum sweet spot for inverters.... and that is a big part of efficiency question also...
pfc - power factor coefficient or something >>> I need to write these abbreviations down someplace in a list until i get them memorized....and interpret/understand them better
I appreciate the feed back as I continue to learn more each day....
so essentially, the will prowse YouTube video needed a larger blue plastic Victron set of inverters ((( to make the split phase
needs a set of the expensive victron inverterts))) to be more efficient at the high load (amp draw) tesla charging....it was not a lack of battery but more likely maybe/possibly an under powered inverter set up not giving enough output....
I don't have a well pump at the current solar off grid PV system >>>> as i have rural water piped to the farm house and an artesian well for livestock....
got hammered with 8-12 inches more snow yesterday...i think it is about 17 inches deep now....hope the skid loader battery charged up enough overnight. and the snow stops 🤔😢🤔😎
hard to get it all done,,,,had another hair sheep have twins in the snow yesterday also.... busy busy....
cheers all,
lots of snow to brush off the 45 degree angle mounted solar panels today still....🤔
a 10kva Victron system from current connected was more than $7400 US dollars so really getting spendy....
at least that was the approximate price in the affiliate link via the will prowse video.... for a bigger set of Victron inverters.... to output split phase....
that expensive Victron price tag definitely makes one look for a more economical efficient inverter for off-grid solar PV builds>>> perhaps better than the piece of paper scam PowerJack sellers on eBay have done....before disappearing as a seller and new sellers popping up.....have to be leery of those also if shipped from china with extended shipping times....
I have been told "jack" @ PowerJack is concentrating om building his 30000 watt modular inverters 1st. as that is what he is selling....his so-called flagship inverter line...
u-power is a PowerJack inverter made in the same factory just different labels....along with several other relabels sold around the world....
sorry, to hear your u-power inverter output experience was not so good, but is still great feedback,,,, thanks🤔😎
green power , superpower, powertank, upower relabeled PowerJack inverters are just a few of the PowerJack built relabels... there are more