Nobodybusiness
Solar Sponge.
What duo are you referring to?if you look at the basement garage duo's ruined dc breaker it had a shunt that was not tight.
I would like to check out the comedy if allowed.
What duo are you referring to?if you look at the basement garage duo's ruined dc breaker it had a shunt that was not tight.
FedEx shows it as in Kansas City at 5:38 am for Friday delivery>>>....2/17/2023.....low frequency >>> a 48 volt 20kw LF PSW SP 2 ss box Super Power Brand supposedly in North Hampton PA today? if it arrives $508.90 via eBay auction...
I think it is set up like the AMG version just like the upower topic that was being discussed...
I thought it was another fraud scam,,,, and started to cancel through eBay,,,, but it seems now to be showing up
I still think it is the same PowerJack manufactured units...
eta 2/17/2023 via FedEx???
I am thinking the other forum just deleted what they did not like,,,, kind of the cancel culture if one disagrees....
I like the 2 box design of the 15k inverter I am running.....
the other forum seems to purposely give bad direction...
they do not have the communication problem solved.....still tinkering with it over 2 years later....as I understand it....I wonder how the two inverters communicate between each other… the house must have shared neutrals… even if they are not bonded to ground… so all panels combined need to be in sync
low frequency >>> a 48 volt 20kw LF PSW SP 2 ss box Super Power Brand supposedly in North Hampton PA today? if it arrives $508.90 via eBay auction...
I think it is set up like the AMG version just like the upower topic that was being discussed...
I thought it was another fraud scam,,,, and started to cancel through eBay,,,, but it seems now to be showing up
I still think it is the same PowerJack manufactured units...
eta 2/17/2023 via FedEx???
I am thinking the other forum just deleted what they did not like,,,, kind of the cancel culture if one disagrees....
I like the 2 box design of the 15k inverter I am running.....
the other forum seems to purposely give bad direction...
WEIGHT | 51 lbs / 23.13 kgs |
DIMENSIONS | 23x22x13 in. |
TOTAL PIECES | 2 |
TOTAL SHIPMENT WEIGHT | 87 lbs / 39.46 kgs |
PACKAGING | Package |
Wait these guys are trying to design an inverter and they don’t even know what a shunt is?
at around 6:23 in that video above he is showing some of what not to do but does not know what it is....or why they blow up all his fets in his inverter...
there is a reason that DC switches and DC breakers are heavy-duty >>>> the dangerous arc flash is just one of the errors to avoid...
I have a 600-volt DC 200amp switch coming today.... made by Square D...
not el cheapo garbage
the shunt on the DC breaker that was not installed correctly or safely had a loose dc connection. he does not know what the shunt is....
shunts are commonly used to get measurements across different points.....
he utilizes the more dangerous used Li-ion battery technology....
the dc arc flash is no joke....
DC breakers should be in a steel enclosure for safety and all connections carefully checked before energizing,,,
safety 1st....
DC voltage has my respect....
as does AC voltage
be safe in all you do....?
one guy is in Ohio and may have been a back shed forum self-teacher who worked for PowerJack but may be a carpenter but not an engineer, the other is/was a retail store worker who also worked for PowerJack is in Lansing Michigan,,,, now both bash them after PowerJack gave them the Chinese handshake. the front man in the video sales man was touting PowerJack in many videos and PowerJack was sending him returns to fix etc,,, but then after trying to be a competitor, it seems PowerJack gave them the Chinese handshake....after getting some preorder money in August 2022....at 3000 dollars per preorder not yet produced hyped gs12k inverter....Wait these guys are trying to design an inverter and they don’t even know what a shunt is?
What is the background on these 2?
Where did they come from?
Why have I never seen this before?
Who in their right mind would give these 2 anything?after getting some preorder money in August 2022....at 3000 dollars per preorder not yet produced hyped gs12k inverter....
Interesting. Have you tried it yet?View attachment 135212
View attachment 135213
176 pound 30000 watt lf psw sp inverter 2 stainless steel cases shipped 2/16/2023 via Philadelphia PA fedex toroid inverter....
so this was via a eBay auction for $966.81 delivery and taxes included 48 volt inverter purchase 12/5/2023 so it takes a while via the slow boat ride.... from China
30000W LF SP PSW Power iIverter DC 48V To AC 110V & 220V-Forver version
Thanks for posting these Block Diagram.Common issue with these large LF toroid transformer designs is the mounting straps. Gentry and Powerjack inverters have this arrangement.
If the center bolt makes contact to the perimeter metal support straps you get a short circuit secondary side turn on toroid transformer made of conductive straps, center bolt, and metal case. This causes a massive inverter DC input current that can blow out MOSFET's on primary side.
When this happens, overcurrent protect on AC side current sensors are not in short circuit load path so they will not shut down inverter to protect it. Not many inverters put independent primary side MOSFET overcurrent sensing protection, other than temp sensors on their heat sinks, so DC input breaker is last line of defense, which if it pops is usually after the MOSFET's are already destroyed.
It is better to have an isolated center support cup without perimeter straps to short out for mounting of toroid transformer.
Whether LF or HF inverters, poor quality designs on either will dominate results.
As to solid design and good quality, I would rate Victron(LF), SMA(LF), Xantrex(LF), and Outback(LF) on the top of the list. SolArk(HF), Magnum(LF) in middle. AIMS(LF), MPP Solar(HF), Growatt(HF), and Powerjack(LF) near bottom of list. A lot of HF inverter clones are very poor quality.
View attachment 135097
View attachment 135099
for less than 1/3 of the prepay not yet existent none yet shipped redesigned GS12k....>>> ($2999.99 plus tax)Your 30kw may do 12000 watt for an hour ?
the tracking is the strangest i seen,,,, the fedex is sending it out today so i will see the 2 box 20k todaylow frequency >>> a 48 volt 20kw LF PSW SP 2 ss box Super Power Brand supposedly in North Hampton PA today? if it arrives $508.90 via eBay auction...I thought it was another fraud scam,,,, and started to cancel through eBay,,,, but it seems now to be showing up .
I won several Ebay auctions also . Tracking show they are in Chicago so I started to cancel through Ebay because of your post . Nothing was delivered for 2 months and when I cancel the seller say it is in Walnut and will ship today . Very strange and maybe a new scram is planned by Jack for his Ebay seller .