genetry inverters

We will not have a "15 KW" per se. We are not following Power Jacks line of numbering. Our 12KW inverter should be capable of 24V. I say "Should" because we have not been able to test that as of now. We are mostly convinced it will be possible but it may also lower the output if the ambient temps are a bit higher.

We currently do not have any plans for a "15kw unit as the size and weight would exceed standard shipping practices. While I am not counting out the possibility, it is currently not planned.

Our lineup is planned around multiples...1.5k, 3k, 6k, and 12k.  Have to remember that 12kw @ 24v is literally 500A without losses.  Expect >550A at full load output due to losses.

12kw inverter will support 24, 36, 48, and (maybe) 60v.  I say maybe, because the absolute maximum internal voltage is 75v, same as the cooling fans.  Might be for special purposes only.

So next up is a 24K unit, right? 😉 4 3/0 cables per side should do it at 24Volts.

Ha.  Not planning for that just yet.  That would require freight shipping, and a completely separate approach.  1200A+...I think it's time to drop 24v 😉

I see you have a 5000w continuous and 20k surge, is that may be just enough to run my 30k BTU. I have the Powerjack 8000w 12k surge right now but not from genetry. 

The 6kw inverter can run 6,000w continuous; the surge limit has not been characterized, but it should easily be able to do a 12kw surge, if not higher.  If your PJ inverter can run the 2.5-ton A/C, I guarantee you a GS can run it...and run it better 😁.

is that the one for $999? 

Yes, that is the 6kw inverter.

You haven't lived till you get to play with that kind of current. I only got to do it at 480VAC and 600VDC. Both were live at the time I was working with the cables and breakers/fuses.

So any update on our Poor Human Error Fix?  😛  Just got in from work and see there is no update, not even one video from sean. I figured he would had 3 vids up bragging at how dasy chaining and show off the pile of inverters waiting to go out his back door to out younder. . .

Oh I got my inverter back up and running with a spare test board...quite annoying, but at least now I know what not to do.

Sean's had a rough day trying to get the problems worked out of the 12kw inverter--because whatever fix works in that one should be a perfect fix for the 6kw inverters.  Probably we'll just have to forget about fixing up the 12kw for a bit, and just get the 6kw units running as clean as we can before shipping them out.

It's going to take more than a couple of days to get all 25 inverters fully assembled and ready to send out.  They're probably 80% complete when we get them...the last 20% of work has to be done here in the States before they can be sent out.

I thought the 6k wasn't really having any issue, as far as driving everything.  Not sure how many bought enough to daisy chain them or not, I know I bought two to daisy chain.  Which you showed on your Frankenstein Rig.   I think the main issue is that Tranny on the 12k is most likely have a high resistance, then the 6k tranny, and causing the mosfet to over heat cause they are having a harder time pushing the power.  But, that my thoughts 😛  I'm not the expert by no means.  *grin*

7 hours ago, The Blind Wolf said:

I thought the 6k wasn't really having any issue, as far as driving everything.

For practical purposes, yes.  The guess right now is that the higher tranny resistance on the 6kw is sorta helping.  But the issue is still present...we just need to do the best we can to filter it out.

7 hours ago, The Blind Wolf said:

I think the main issue is that Tranny on the 12k is most likely have a high resistance, then the 6k tranny, and causing the mosfet to over heat cause they are having a harder time pushing the power. 

The issue is not a load one.  The problem is that an "off-state" MOSFET is getting briefly turned ON several hundred times per AC wave by EMI/spikes induced in the wiring/design...which is causing it to burn up considerable heat by wasting battery power.  Very easy to see on a 'scope.  The greater the load, the worse this EMI is, which is kinda a big clue...

1 hour ago, Sid Genetry Solar said:

For practical purposes, yes.  The guess right now is that the higher tranny resistance on the 6kw is sorta helping.  But the issue is still present...we just need to do the best we can to filter it out.

The issue is not a load one.  The problem is that an "off-state" MOSFET is getting briefly turned ON several hundred times per AC wave by EMI/spikes induced in the wiring/design...which is causing it to burn up considerable heat by wasting battery power.  Very easy to see on a 'scope.  The greater the load, the worse this EMI is, which is kinda a big clue...

Don't waste too much time looking for electrical ghosts, because very often the problem is mechanical. I once had a poor drain connection to a FET where the case tab was supplied by a live heatsink. It looked a lot like EMI on a scope. My boss went to looking for filtering solutions. I put my finger on the FET to feel for heat, and it sparked at the tab and screw. One and a half screw turns later, the heat problem was gone. I've even had to gently lap the surface of some FETs on sand paper to get a clean surface and have satisfactory electrical and thermal connection.

Wouldn't it be crazy if all your problems went away if Sean torqued all the heatsink screws to spec?