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The funny way things wok out.. So in the process of calling around trying to make sure I'm thorough and have a good working load bank when I get done modifying it. I was calling around trying to find out about the gauges on that load bank to see if I needed to change any besides the frequency...

Thats correct. The load bank would be inside the dotted line. Pretending to be the aircraft. If you look at the plug on the front of my load bank it has that same six pin plug The square with E & F pin and the load bank.... Oh I see the flaw in those thoughts. The contactor isn't being drawn in...

Yes I have my eye on a couple already. One even has a range of 100-500 volts. I need to get my tape measure inside the load bank and see what I've got room for. It is pretty crowded in there already. Thats the one reason I would like to use what's already their if possible. I'm sure you are...

I realize now that all the relays in the load bank are DC. I knew the on off one was but thought the rest were AC. My concern now is the 400hz AC to DC transformer might not make clean enough DC at 60hz but I'm happy the relays are DC. That means I can test almost any AC voltage if my input...

Now I know the plug on the front is a dead give away also. Those plugs are expensive too. I'm learning a lot making all these mistakes though so I'm having fun.

Well I had just made that trip up to Pennsylvania to pick up that 803 power plant and had a little 831 in New Jersey not be available when I showed up to get it and wasn't feeling like 20 more hours of traveling and I needed to get back to work so I had it shipped. I paid more for the shipping...

Just a bunch of stuff I'm learning and seeing as I dig around in this thing. 2PBFeet had the idea of running the fans with a 400hz vfd. It only needs to be about a 6 amp vfd so 20 but that is a good idea since these are some really powerful fans and it will be hard to replace them.

So after speaking with the guy from 400hz repair a little more and trying to sell him the load bank we established that mine is older since it has the 400hz fans. They changed to high voltage dc when covid made it impossible to get replacement fans. I am learning more.

Right. I actually did that already. I took a 10kw heat kit for a furnace and ran a fan across it and it worked really well but the load bank looks nice and clean.

Heck the fans will still be spinning 1200 rpm. Lol.

That's funny because the guy from 400hzrepair told me they are high voltage dc but they are 3 phase.

So here are a bunch of pics inside the bank. The only thing I see that might care about the hz is the transformer and what I believe are little rectifiers. Even the CT is 50 to 400hz. Any one see what I'm missing? 2PBFeet seems to be very electrically save. Do you see anything? Would the...

Definitely better than nothing!! Heck he did even answer a couple questions. I'm still dying to know what about it is only 400hz.

Yeah I guess a 10kw switch would be pretty big hu? Maybe I'll use breakers or something for the stages. Maybe I'll just try to sell it and wait until I can get the right one. I have kind of a bad habit of jumping before I look. The info was kind of hidden in the listing and I would have had to...

I reached out to 400hz repair and they at least answered me. I'm not getting any more than this though Well Sir, You purchased something that was specifically made for the Patriot Missile System. 400 HZ is the only Frequency that it works at and the input power that drives the LB is 115 phase...

Toggle switches. Not bolts

That is kind of my plan if I can't use it with its circuit board then use the coils with toggle bolts and an external fan. It is a nice load bank though so I would like to find a way not to butcher it. Lol

I guess the first time I try it I can use my 15kw gen and put it on 415 just to see how it likes the 60hz with everything else the same.

Thank you for this. I does look pretty similar and should be a start.

Copy that. Thank you for looking into it for me. Once I get some time I'll open it up and see if the fans are DC. They look like computer fans. After that I imagine I'll put some voltage on it and see what happens. I think it's kind of funny how much awesome documentation they have on things but...