50-67v DC => split phase AC inverter recommendations

C

cricketo

New member
Joined
Oct 17, 2018
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4
Folks,

I'm looking for an inverter that can be powered by a 16s configuration. Unfortunately the pack can't be reconfigured to play
nicer with 48v systems, so I need something that can accept 50-67v input, while producing split phase (US) 230v. 3-4kW
would be ideal. So far the highest I've seen was 64v, which is better than nothing, but perhaps somebody came across
something better :)

Thanks!
 
64V would give you 4V/cell. The life span advantages of charging up to 4V would be far greater than eeking out a little extra capacity for the last .2V.

Just a suggestion ;)

Unless your packs aren't standard 4.2V cells, then I can see a need to charge them higher. What cells are they?
 
4000W
Peak 12000W
Pure Sine Wave
Split Phase Power

If that is true, then that's a pretty good unit.

Now, it does "require" 220V input, from the description. So you'll need to make sure that's available if you use this unit.
AC input Range?Grid or Generator?: 140V-270VAC/184V-253VAC?select by SW2
Click to expand...

140V low end(?) That's a bit odd. that's a huge range on the input. I wonder if that's because it can handle Generator input, which could get really low if the geny is ran at low rpm or heavily loaded.

APC Low Frequency Pure Sine Inverter Charger
Click to expand...

Interesting. If it really does have APC internals, that's really good.

If you get this, you'll need to keep us updated on its performance.
 
Like any product made by a not so well known Chinese company, the specs can be significantly exaggerated :)

Now, it does "require" 220V input, from the description. So you'll need to make sure that's available if you use this unit.
Click to expand...

It works with that AC input similarly to a UPS, but doesn't require it. In fact in my application AC won't be available, as the unit
will be mobile.

140V low end(?) That's a bit odd. that's a huge range on the input. I wonder if that's because it can handle Generator input, which could get really low if the geny is ran at low rpm or heavily loaded.
Click to expand...

That's odd indeed. Again, could be just a typo.

I found one review on Youtube for an inverter from that company, and it was extremely negative. That person opened it up after it failed just 2 months
since purchase, and found extremely terrible design that wasn't worth repairing. I think it may be worth to keep shopping around :) Here is that vid:

 
these are spendy but well built, reputable US company.
https://www.solar-electric.com/outback-p...4048a.html

I think AZ wind sun is still having a sale on these units. they are under $2k now. Sometimes you get what you pay for...
Click to expand...

Those go as high at 64VDC, so that's not bad. I found that Victron inverters can do 66VDC, so I think those will be a better fit.
Now I just need to pick a model (size) that's right for the job.
 
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