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So I do get the control boards manufactured with SMD assembly--for most of the parts, anyway. I have to hand-solder all the through-hole parts (relays, connectors, screw terminals, etc., etc.) for now.
Said PCB manufacturing company doesn't stock the driver ICs, so I have to solder those by hand. (They also don't support 2-sided SMD assembly.)
Once we provide the inverter design files to the manufacturer, however, they'll be responsible for getting all the parts put on the boards.
that explains it.... i thought i heard Sean say it was a PowerJack driver board that he put in the genetry solar board that was not compatible and that they were different colors and it was his fault for the board break down.... i will have to watch that Genetry Solar YouTube video again...
OK, what Sean said @1:00 in the above video is correct...though could have been worded clearer: "This board right here, is the Power Jack mainboard version of our driver board." The blue-colored LF driver board has a pinout specific to the PJ rainbow cable.
The green-colored LF Driver board (again, which I designed, ordered, and hand-soldered all 8 parts to) is specific for the upcoming GS mainboards. This driver board's pinout is ever-so-slightly different.
Mixing up the two boards WILL result in FET smoke. That's why I made them different colors--though I shoulda made the PJ-compatibility board bright red or something obvious like that.
But in neither case is the LF driver board (or control board) a PJ design. Both of them are marked "GS LF Driver."
The blue-colored LF driver board has a pinout specific to the PJ rainbow cable.
The green-colored LF Driver board (again, which I designed, ordered, and hand-soldered all 8 parts to) is specific for the upcoming GS mainboards. This driver board's pinout is ever-so-slightly different.
I know that you fix the crosstalk on the long upcoming GS mainboard so the position of the trace require a green-color LF Driver board . I see the burn out long main board and it look like that is the problem with the PJ 30000 watt that will not allow it to pass 12 kw for long as the the crosstalk will blow up ALL the FETs . The original 30 kw has 2 long six capacitors mainboards which is a major problem for inductive load with crosstalk . I have to see if your PJ 30kw has change to the 4 capacitors smaller mainboard and rev 11.3 control board which will not blow up the FETs as easy with crosstalk . That mainboard in Sean youtube look exactly like my PJ 15kw with 2 mainboards after the FETs blow up 3 three years ago . I now use one long mainboard and that help with crosstalk but the only way the PJ 30 kw will be able to run more the 9 kw continuous is with one mainboard and with the trace in a different position and a new design LF driver . IF a PJ 30 kw ever blow up then all the parts need to be replace . Just think how much it cost Sean to relplace 44 FETs .
curious in the GS12k prototype, in Sean's YouTube video you utilize a quickly/ordered new design change with a pre-production bent solid copper bus bar to connect to the negative battery DC input post of the GS inverter design to the aluminum heat sink....I think I saw that similar idea in some other inverter brands....
is the more expensive single DC negative battery post post is a stainless steel??? which does not conduct electricity as well???,,, will you make the copper busbar out of a Nickle-plated to resist corrosion??? just wondering if more resistance is created at that point in the inverter or if some method is used to decrease the resistance that i have not observed...????maybe a dumb question??? I am still learning...
in LiFePO4 battery assembly the aluminum posts are often connected to a copper busbar and it is best to use Nickle plated bus bars there for the anti-corrosion property of dis-like metals to prevent the galvanic reaction between dislike metals....?????the stainless steel bolts or studs utilized there are not the primary current carrying part.... as the current carrying connection is the nickle-plated busbar to the aluminum top post of the battery....the stainless steel post has a lot more resistance to the current flow and most of the current flows through he aluminum and nickle-plated busbar...connection...
I think the DC battery post are stainless steel in the PowerJack inverters but will have to take a closer look at them....must be a copper connection and not the stainless steel binding post ((this is only for the physical bolt down between the cable lug and the part around the post... correct)))??? the plastic insulator is the part you say is cheap in PowerJack...DC double binding post setup....
12,000 watts divided by 48 volts = 250amps needed from the battery and if it is only 90 percent efficient you would need more watts input to get 12000 watts output....
say about 13,400 watt DC input to get approximately 12,060 watts output at 90 percent transformer efficiency...
so then 13,400 divided by 48 volts would be 279.17 amps DC input or draw from the 48-volt battery....
and if it is only 85 percent efficient then>>>>???? 14,200 watts DC draw to out put 12,070 watts if 85 percent efficient and a draw of 295.83 amps through the DC wire from the battery???? so 4/0 copper battery cables and a 400 amp class T fuse for sure would be needed....
also abandoned the idea of the lid fans directly above the toroidal transformer???? too expensive to make the taller more bulky heavier case???
have a great day....and please forgive the newby questions???
thanks for all replies....🤔🤔😎😎
is the more expensive single DC negative battery post post is a stainless steel???
No. The only stainless steel in the entire inverter (to my knowledge) is the chassis. The battery post is plated copper.
which does not conduct electricity as well???
You got that right.
will you make the copper busbar out of a Nickle-plated to resist corrosion??? just wondering if more resistance is created at that point in the inverter or if some method is used to decrease the resistance that i have not observed...????maybe a dumb question??? I am still learning...
Nickel-plated busbars were what I wanted; however, when I ordered said busbars (back before the Chinese New Year holiday), the nickel-plating team had already gone on holiday, so we were fortunate to get busbars of any sort without the 1 month holiday delay. Production will be plated (nickel or otherwise) to prevent oxidation and corrosion.
12,000 watts divided by 48 volts = 250amps needed from the battery and if it is only 90 percent efficient you would need more watts input to get 12000 watts output....
We do not have the proper equipment to make an official efficiency declaration on the GS12, BUT all losses considered, I am hoping for a 90%+ efficiency (92% would be splendid).
Doesn't help that the hotter the transformer, the lower the efficiency...so it's a spiral into trouble.
also abandoned the idea of the lid fans directly above the toroidal transformer???? too expensive to make the taller more bulky heavier case???
Idea was abandoned because it's not viable. In this case, we have 2 fans on the transformer...one pulling, the other pushing. The issue with a top fan is that a ~5" fan gets quite lost across a ~10" transformer. Besides, there's a LOT more surface area on the sides of the transformer.
buyers beware >>> powerjack scam: buyers beware
the 30000 watt inverter was a cardboard envelop scam via "rayjunglepower" as the seller. he now has nothing listed on ebay....
the piece of paper is not a 189 pound 30000 watt inverter...
powerjack-jack does not reply via the skype ....
ranjunglepower does not reply via ebay messages...
a total scam...
i got one refund back via eBay.
if you complain through your credit card company the credit card will refund the money.... maybe ... but then eBay will close the case and the scam sale of the powerjack product where they send you a flat cardboard envelop with a piece of paper and say the product was delivered is a total scam.
eBay moneyback guarantee is not to be trusted either,,,, you will find an automated system where you can not actually talk to anyone..
my discover card gave the money but now has to argue with eBay over the scam fraud seller on eBay.
my MasterCard also returned the money but again has to argue with eBay.
in the end the scammer gets away....
and you may or may not get your money returned permanently..
just a warning....
evidently gs only pays part on contract until the order arrives and pays later with the pre-paid buyers money....maybe a better system for them to float the money for 4 months with a potential moneyback guarantee if the product never arrives...
I really was looking forward to testing the 30000 watt powerjack but it was a scam....via the eBay seller rayjunglepower...
they have other pawns with low ratings selling for them now....for them... rayjunglepower has disappeared.
hmmm 🤔🤔🤔
evidently gs only pays part on contract until the order arrives and pays later with the pre-paid buyers money....maybe a better
This is a pretty typical way of doing things. Part payment at order, upon receipt goods random sampled and verified, and if all is in order final payment made. If the purchaser is big enough there can be long term clauses and payment delays too, ie part of the contract is that the product must have a failure rate below X in Y years. If the failure rate exceeds that the final end payment is not made.
I have seen paperwork where a fairly large Chinese set top box satellite receiver manufacturer's boxes had a high failure rate and the purchaser didn't make the final payment. The Chinese manufacturer simply didn't even bother trying to get the final payment. It was likely they fully expected to never receive it because they knew already their boxes wouldn't meet the mark and had built that into the price. Obviously I can't say which one that is, but they are still around and still making hilarious claims such as being around for (wait for it, wait for it) 150 years ... This is likely an attempt to sponge of the reputation of a similarly named company that has been around for quite a long time.
they have other pawns with low ratings selling for them now....for them... rayjunglepower has disappeared
DAVID and HELEN A
they have other pawns with low ratings selling for them now....for them... rayjunglepower has disappeared
DAVID still selling on ebay . He has 2 ebay accounts with different name . The 30000 watt PS inverter is 5000 dollars . HELEN is selling for the same price on her ebay account .
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they have other pawns with low ratings selling for them now....for them... rayjunglepower has disappeared
PowerJack's new pretend sales people pawn scammers at higher price.... new scam accounts trying to avoid eBay fees....
I think Alibaba may be safer than eBay money back guarantee.
after 30 days it is hard to get credit card to help either... sometimes... need to read the small print...
I would not even consider it for 5000 dollars,,,, their vip system after the cardboard flat envelop with a piece of paper and sending it certified to pretend they sent a 189 pound inverter... yea right!!!
total scam I had to get refunded. April orders nothing but a piece of paper without any communication....over 60 days one order was in march which is over 75days with no product actually bein shipped,,,, a scam at their chinese core...
my recommendation is to avoid them like the plague!
any salesperson who can not reply since may 13th to numerous messages is over 30 days is definitely a scam company...
kind of like when they dumped Sean as their repair center without any notice....
looking at other 12 to 18kw inverters now.....Sigineer & Sungold power are 2 possible for off-grid whole house inverter...
still looking....researching....
25 kw inverter and 20 kw inverter in aqua green floor model higher voltage inverter might be a good option also...
Zhejiang Sandi Electric Co.,Ltd,
25 kw inverter and 20 kw inverter in aqua green floor model higher voltage inverter might be a good option also...
Zhejiang Sandi Electric Co.,Ltd,
First time I seem such high power inverter from China . I price is probably very high . Youtube give NO price .
after 30 days it is hard to get credit card to help either... sometimes... need to read the small print..
total scam I had to get refunded. April orders nothing but a piece of paper without any communication....over 60 days one order was in march which is over 75days with no product actually bein shipped,,,, a scam at their chinese core...
my recommendation is to avoid them like the plague!
I buy from China using paypal CREDIT where I have 180 days to get refunded by paypal . Also I pay nothing to paypal for 170 days . You really have to file a dispute with the credit card bank before 60 days and now after 75 days they may found a way to scam you with the delay and faked delivery . I would still fight to the end with the bank .
I would not even consider it for 5000 dollars,,,, their vip system after the cardboard flat envelop with a piece of paper and sending it certified to pretend they sent a 189 pound inverter... yea right!!!
Sid say two of the 30000 watt PJ inverter blew up . Sean say he got phone call about the 30000 watt PJ in his latest youtube chat . The new PJ 30 kw 5000 dollars probably has copper windings and do 15 kw by copying the GS transformer winding wiring spec . The 2 PJ blew up becasue they try to copy the GS control board but failed and the Miller effect blew it up . I will never know because I will not pay 5000 dollars to see what is inside .
The new PJ 30 kw 5000 dollars probably has copper windings and do 15 kw by copying the GS transformer winding wiring spec . The 2 PJ blew up becasue they try to copy the GS control board but failed and the Miller effect blew it up . I will never know because I will not pay 5000 dollars to see what is inside .
I want to make one thing clear: PJ is not copying GS. Our improvements significantly increase the cost--and when the goal is to make a dirt-cheap unit, they aren't interested. Their cost-driven ecosystem could pretty well squeeze a full glass of milk out of a penny.
Like I've said before, there has been zero foundational innovation on the PJ control boards since the beginning. Sure, a thing gets tweaked here or there--but nothing significant has been changed or improved.
Looking at other 12 to 18kw inverters now.....Sigineer & Sungold power are 2 possible for off-grid whole house inverter...
I did the math eariler on the idle draw of the Sigineer . High idle draw of 250 watt is not good for battery . My battery voltage will be zero if my MSB controller fail and 6000 watt drain in 24 hours from the Sigineer or Sungold will destroy 1000 dollars of battery .
I probably shouldn't ask, it's like grabbing hold of a live wire you know what is going to happen, but .. why would your battery be discharged to 0 volts? The Chinesium inverters have low voltage cut off and, assuming you have a lithium battery of some type, your BMS should step in and prevent discharge below '0%' (which is not 0 volts) anyway.