Pre-Order Discussions

Not in water anyway.  You could submerse it in (non-conductive) oil and be fine...though you'd probably want to disconnect the fans first, as they aren't oil pumps!

Wouldn't be too expensive to build

Need a vacuum pump and tub that can handle a vacuum

Any oven to cure it after

It gets messy though 

Might be able to get one done locally and see if it's worth it

Look for a rewind shop and ask

I know where I was we would from time to time ( no longer working there)

It was a shop that rebuilt aircraft generators and the rewinds would be dipped

We also would repair damaged transformers by VPI if they ran hot or loud

I suspect even if it helped, the weight increase would be intolerable.

The thing is already pushing the maximum weight for consumer shipping.

I wouldn't expect much change in the weight as the resin is a plastic and you let it drain so it mainly just secures everything which actually improves the reliability by eliminating chaffing between turns

I suppose compared to the weight of the tranny, it wouldn't be all that much.

It would be interesting to see the performance delta for that process. I would think the Chinese manufacturer would have easy access to the equipment. 😕 I know it's not an uncommon process...

TBH, though, the tranny itself isn't what i find to be the weak-point durability wise of my GS6. Rather, it's the primary leads that come off to the side and touch the casing. With vibration (RV use or nearby vibration source like a generator) it can wear the insulation off the lead and short against the casing.

Fiberglass wrap the leads and that is solved

VPI secures the wrap

5 hours ago, NotMario said:

TBH, though, the tranny itself isn't what i find to be the weak-point durability wise of my GS6. Rather, it's the primary leads that come off to the side and touch the casing. With vibration (RV use or nearby vibration source like a generator) it can wear the insulation off the lead and short against the casing.

Said leads should not be routed near the case; that's an issue with final assembly.

And that's a great reason for keeping the wires short

On 12/13/2022 at 7:25 PM, Steve said:

And that's a great reason for keeping the wires short

They're so ridiculously long for the field reconfigurability of Genetry inverters...otherwise you don't have enough wire to wrap through the ferrites as necessary for normal operation.

Yes, some of our goals aren't as perfect in real life as we'd like--but let me just tell you, a customer finding that the inverter can be reconfigured in the field (instead of having to buy a new one)...now THAT'S a happy customer 😉.

DECEMBER 13, 2022:

• nothing from the factory, hehe.
   
• I think I've found a heatsink supplier...decent prices, and a unique heatsink design.  (I'm going to have to do some mild redesigning of the heatsinks due to the different profile.)
• I paid for a run of GS control boards.  Their ETA is ~2 weeks...though that may be delayed slightly if the relays aren't ready in time (ETA on those was 10 days).
  • I'm expecting to get a GERBER preview to confirm for production sometime tonight.  So far so good with this PCBA supplier.

Yeah that was the first issue I had with my PJ the leads were too close.  I fixed all those issues the wire routing was so bad by PJ it wouldn't have lasted very long for sure.  With heat cycles the wires will move so good to have protection in place and tie them if they go more than a few inches unsupported to prevent vibration issues.

Agreed. Last time i had it apart i tied the leads such that they can't reach the case anymore.

I can personally attest to this when i added the second wrap around the ferrites - any less wire and that would not have been possible.

December 16, 2022:

• still trying to get further updates from the factory.....

on our end, the following updates can be provided:

• the sample 12kw transformer has shipped via DHL; ETA is Dec. 22.  Oh, how much time each step takes...this is a single sample transformer to verify that this transformer company can understand and meet our requirements BEFORE a bulk order can be placed.
• some misc items (power buttons, thermistors, current sensors) will ship tomorrow via UPS
• still in back-and-forth with the PCB company...now over the silkscreen.  Apparently they don't like my use of small print for the part IDs.  And my response is to say that they should be able to make the board with no part IDs...
• got a quote for heatsinks...and they're a slightly different pattern & size than the "original" ones--but every change has a benefit attached to it.  Got a DXF profile from them, now I need to redo the 3D CAD heatsink plans to move the screws as necessary...then get a small order of these on the way...
• Sean is going to personally visit a packaging manufacturer fairly near where he lives on Monday, to see what they can offer us as far as inverter boxes & packaging foam.

still trying to get further updates from the factory.

Sean ytube  say Jack ship  something on DEC 15 ?? 

I used to sell and ship 75lb CRT video monitors, and used foam inserts that cradled the monitor within an inner single wall box.  The inner box was packed into larger double wall box with 3" of foam "peanuts " surrounding the inner box on all 6 sides.