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dochubert

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dochubert last won the day on April 29

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  1. Now I'm concerned! Was blissfully unaware that I have exceeded the lifetime of my inverter's caps by many times already. Ran this 48v/15kw pj inverter 24/7 from apr4 last year to oct26, then as sunlight was available thru winter. Went 24/7 again mar15 this year. Expect to go till late oct again. Do you have a recommended replacement cap for these that has a bit more lifetime? (10000mfd 80v) It seems I should be replacing them at least once a year, and 4 times a year by your 3 month figure. (Just what I needed. Something else to worry about.)😟
  2. I got one of the dual longboard inverters awhile back. Initial test run had it heating up very quickly at no load. I removed the second mainboard and it runs fairly decently now. It is still a backup as my old-style clamshell 3 transformer model runs much cooler, quieter, and more reliably handles higher loads. (V3.6a control board) Do you consider the smaller mainboards to be a better or 'less prone to problems' alternative to the larger mainboards? (talking single board, not dual) Better pcb layout? I have always considered them less desirable due to smaller heatsinks and therefore lower heat disipation capacity, but am willing to revise my view. Also, they allow less caps. Original design called for 6. How many is 'enough' and how many is optimum?
  3. "The Washing Machine from Planet 9!" This is getting interesting! When you guys figure it out, please detail what happened here for the rest of us.
  4. I knew he would!😁 So then the question becomes; Is having two mainboards actually an advantage? Do you gain any power-handling capacity? Seems to me you would gain more by adding a second transformer (or increasing single transformer size)
  5. Babk to the original topic, that solar panel tester/meter seems to be a useful tool. Wish I'd had one a few years ago when I was setting up my arrays. It would be handy for spot tesing suspected problem panels too. It seems to be a new tool, but they are for sale on ebay now, so in a month or so the price should come down some.
  6. Definitely a chinese solder job. Looks like 6 is bridged to 7 (makes no difference if all switches on). Have you tested for bad/blown resistors? Dip switches actually closed (making contact)? 9600 watts continuous from a 15kw pj is doing pretty good! On the 30kw, I wonder if you have a case of dual mainboards fighting each other? As there is no provision for balancing between them, it's possible. Don't know how you would test for that except by disconnecting one mainboard, then see what happens. Sid probably has a better diagnosis.
  7. I have had a similar experience with powerjack communication. I tried to buy powerjack parts from two different ebay sellers and was denied the ability to bid or 'buy it now' from either one. "The seller isn't accepting bids from you at this time" WTF? I have no ebay issues. I've purchased powerjack parts and inverters from other ebay sellers without problems. I have great feedback. I pay promptly. Why would any seller not want to sell to me? I've never dealt before with either of those two sellers so how did they pick me to block? Tried emailing the two sellers. crickets. Never got an answer to any of that. I was simply told that a seller can deny selling to whomever they choose. On further inquiry it seems those two sellers are both 'shell companies' for powerjack. I emailed Helen at the powerjack website about it. She replied, ignoring the question of the two ebay sellers and asking what I wanted to buy and for what inverter? I answered and never got another email. Sent 3 more. crickets. I had dealings with Helen years ago. Very nice and very helpful. Don't know what but something has changed....
  8. Cool! How soon after you stop laughing can you have it ready? Thanks Sid. The info trickles out and I learn a little more with each bit....
  9. CrazyDave, I would be very interested in knowing what the settings are on your 20kw pj dip switches (SW1). Powerjack won't say how to set them. It is only thanks to Sid that we even know what they do! There should be a 'table' that shows which switches do what and how to set them for a particular inverter. If one exists, nobody, including Sid and Sean, admit to ever seeing one. I have been writing down the settings for SW1 for various inverters with the hope of eventually figuring something out. Would love to add your 20kw to the list. And if your 30kw is actually set I'd like to know what it is set to as well (in case that isn't the problem on yours) Now that I think about it, all of us here should compare settings on every size pj we all have and see what we get.... Or maybe just send all our settings to Sid and let him build a table.... (Sid doesn't have enough to do... 😁)
  10. Interesting to note that a whole lot of those old Xantrex/Trace inverters are still running fine! My first solar inverter was a Trace 1500w Grid tie. It worked flawlessly for years (until the house burned down - not because of the inverer before someone asks!)
  11. My used BYD modules (16S, lifepo4) start getting out of balance above 54v, so my bulk setpoint right now is 54.4v with float at 54v. That's just to be safe for daily use, and it's what Battery hookup recommended. My solar can put more than 120a into the bank at peak. Don't want to do any damage. Hoping once these balancers are hooked up I can start gradually bumping up to bulk of 56.5v and float of 56v. At worst I can stay with 54v but would like to do a bit better. With good, reliable, properly working balancing I'm hoping to get a long lifetime out of these batteries.
  12. I think you've got a winner there! I've never had an issue with the rubber pads or the rubber blocks I've been using. I consider a transformer "running too hot" if it reaches 50c so should be no issues with your cooling plate with typical loads. Nice job!
  13. That looks great! Don't know a thing about 3d printing. What material is it made of? High temp plastic?
  14. I'm planning on leaving mine hooked together also. My heatsink is massive so should handle it ok. 2 sets of 8 on one huge heatsink. Putting a temp controlled fan on it too so should be good.
  15. You guys crack me up sometimes! MY Powerjack 15kw will do 15kw! They wouldn't lie! I completely and 100% believe everything written in their manual with the cute girls on the front! You couldn't put cute girls on it if it was a lie, could you? And now I have to put a diaper on my face and go get an experimental dna-changing mRna drug injected because an actor playing a doctor in a commercial on tv said it was safe and effective.
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