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dickson

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dickson last won the day on September 22

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  1. i will study up on the chokes on ac and dc. thanks for your reply/guidance Powerjack now sell the largest choke I ever seem on ebay . 490 uHenry for the DC side and also can be put on the output AC side for L1 but maybe not L2 because has no filter capacitor . This make L1 like a surge protectin circuit . The DC side will now be a LC filter circuit . see picture . Powerjack know their inverter has a problem and try the best to fix it . I just lately see that the Sol Ark and Growatt inverter has a major problem with surge but will be very difficult to fix because it is a HF Inverter . They has a difficult time running washing machine and dishwasher .
  2. What is the standby draw on your inverter now? DC positive cable measure 0.032 amp x 61v equal 1.95 watt . L2 has no filter cap measure 0.099 amp x 106v equal 10.49 watts . L1 has 4uf filter capacitor measure 0.002 amp x 116v equal 0.23 watt . The black label capacitors blew out were replaced with brown capacitors .
  3. maybe not talking about the exact same thing? Another youtube by a electrical engineer EEVblog 1406 - DC Circuit Transients Fundamentals explain how bad an inductive load can be on the DC side . The battery DC input wire of the inverter go directly to the positive of the capacitor and the ripple on the capacitor will destroy the capacitor over time as mention in this forum . I put choke on the positive input like in the picture so now the circuit is a LC circuit . The choke will reduce the ripple on the capacitor and the capacitor will last a little longer running the heavy inductive load of the heat pump . The surge is so bad on the capacitor that the capacitor burn and the solder melted and the capacitor come loose . That why I need the 12kw GS next year . The DC choke also reduce the standby wattage to almost nothing .
  4. the idea of the choke is to lessen the flyback from surges on heavy loads, but that would be on the ac side or the ac output from the inverter ..... correct Yes . If you open the transformer box there is a choke or 2 chokes on the AC side . I have 2 chokes outside the box on the DC pos and DC neg wires . When a heavy load like a heat pump start there is a huge surge on the AC side which cause a big drain on the DC side and the choke soften the huge inrush from the battery . People on youtube say DC choke do nothing which is true but nobody run a 4 ton heat pump on a powerjack either . I have to keep my battery voltage 61 volt to run inductive load that why I use the dangerous lithium ion electric car battery 16s . Those battery dump 300 amps in millisecond and the temperature of the transformer and moffet jump up fast .
  5. How and where does your choke mount on the positive DC input? Is that outside the transformer case on the DC input cable? The choke suppose to be 40 uHenry but I copy what other inverter company give with their inverter to be loop one two or more times thru the 65mm ferrite core depend on wire size that fit . People on youtube say it do noting but I think it stop the voltage spike that back feed to the dc side when a inductive load switch on . I know the 10uF capacitor on L2 will stop the voltage spike on the AC side and help run the inductive load of the washing machine . See the picture of the choke on positive cable . I put a choke on the negative cable also . A picture of a similar choke on ebay but not the same as mine .
  6. what does the choke do to aid the LF SP PSW powerjack inverter? I think powerjack copy Sid idea just like the LF Driver they sell with some 8kw ver11.1 control board . I make a choke for the positive dc input for about 20 dollars parts from ebay . Powerjack should copy Sid idea for 10uf capacitor for L2 to suppress emf to help washer machine to run better . I run my 15kw PS 16 hours now that the temperature is under 90 degree F and can wait for the 12kw GS next year to run the 4ton heat pump .
  7. You probably are speaking to PJ themselves. They have a lot of different names/stores. I think David is the representive for Powerjack in the US selling on ebay . It seem David answer no matter which ebay seller I ask for information . I was suprise at first but it seem all complaint get back to Powerjack in China .
  8. -I almost feel the problem with this inverter is it is trying to charge the batteries at the same time produce ac voltage. I could be wrong but seeing how many people have problems with the charger on these im suspect to think thats the issue David know just about all the problem with powerjack inverter on ebay . David is the one told me to not use charger . David also get report from all the other ebay powerjack seller about any complaint because he send me email when I buy parts from other ebay powerjack sellers . Thank you for your report . I never complain to David .
  9. I sent video to seller and the engineers looked and it and they can not figure out what is wrong with it and suggest I return it to them for repair. They are suppose to get back with me on who to send it to seeing how the repair shop in michigan is shut down but they havnt got back yet Previous post on this forum say powerjack will do trade in for the 3 boxes 15000 watt which is better but do not know the cost . I do not see anymore one box 15kw on ebay . The new design is AMG but do not know what that output board design is like .
  10. 40 250 watt solar panels arrived on 2 pallets by truck today (10,000 watts more solar panels. so lots to do before winter sets in too hard. WOW amazing . Sean should do what you do . LG pouch battery is too hot and dangerous .
  11. I dont understand how to hook up the charger. From what I understand I should wire up 110 volts to the 110 input on the front lower left panel of inverter Sorry my 15kw do not have a charger board and I do not know how to hook up the charger . Can you not connect to the 110 input and not use charging ? Almost eveyone who post in this forum say charging is a problem . Your connection to the L1 N L2 output is disturbing . The bare copper wire is Ground and suppose connect to the inverter metal case . The white wire is N to the inverter output and need to be AWG 6 the same size as the red and black to L1 and L2 . My output board which has no charging is completely different from your output board in the picture . There is not and easy way to modify your inverter with an output board like mine . I suggest send the video of the LED blinking and making the thumping noise to the seller and have a powerjack engineer look at the video . Thank you for all the pictures . Now I know why Sean have such a hard time repairing powerjack inverter and not answer because of all the diiferent boards .
  12. I contacted supplier I purchased it from and they gave me 2 new cpu boards and drivers and still it does not work I go back to your post on july 28 . Look like you replace the rev 10.3 control board with the bad MCU with a new rev 11.1 control board . Your new picture show the green LED working but has problem . Your output and charger board show 115 vac . My 15kw powerjack do not have charger board and is wire different . I will open my powerjack and get back to this post later . Your charger board may be damage on july 28 and need to be change with a output board that has no charger board . Thank you for the video and I will compare to my rev 11.1 control board running with no problem later .
  13. I replaced the cpu and driver 2 times and still have the same issue I go back to your post on july 28 . Look like you replace the rev 10.3 control board with the bad MCU with a new rev 11.1 control board . Your new picture show the green LED working but has problem . Your output and charger board show 115 vac . My 15kw powerjack do not have charger board and is wire different . I will open my powerjack and get back to this post later . Your charger board may be damage on july 28 and need to be change with a output board that has no charger board . I have many bad parts I buy from ebay but never complain or return back to seller .
  14. Almost 100% certainty that it was bad FETs Thank you for your reply . I have many bad FETs from ebay and if one is bad all 24 also blew up . Also if one resistor on a mosboard is bad then all 24 also blew up . This happen on my 15kw but not on 8kw powerjack where I only need replace one mosboard . My mainboard burn black on the backside just like your video show . One time I had the neutral wire disconnected and the power to the house shut down automatically but the powerjack still run ok and all the FETs still good .
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