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EG4 6000XP - 3 phase?

I'm not sure how I missed this but I am on the other side of the deadline. I have 4x 6500ex refurbs that I got a week before they were discontinued.

Through November and December I was working on phase 1 of the project. I have 20 kW of panels on the roof of my 40x50 barn with a 30kWh rack of batteries and a SolArk 15k. A 100 amp line from the house to the SolArk, feeding a breaker panel in the shop feeding a 100 amp line to a separate critical loads panel back in the house. My plan is to wire the 6500ex to the batteries with voltage control. Currently I have the 42 panels broken into 6 strings of 7 panels but it's not optimal with parallel strings going into the 3 MPPT that seem to be fighting due to optimizers. So I'll probably be breaking the strings up some (and adding more panels) into the 6500's. First I have to get through inspection with the 220 split phase set up.

My son has a couple of plastic injection molding machines he's rehabbing that we need the 3 phase for. Fortunately we can run them off 220v 3 phase (using max voltage setting of 127) and 1 machine already has a VFD in it.
 
Any chance a 6000 can be connected to the 6500's for 3 phase? If the 4 I already have aren't enough...
 
I was figuring so but one can hope. OTOH internal hardware shouldn't matter, I mean it's capable of syncing with the grid. It should just be a matter of comms.
 
Although a sync cable could be model and even brand agnostic.

Updates and control/status, there would be much more to that.

I'd like to be able to connect 4x 120V inverters for a 3-phase system. That could support split-phase 120/240V and 3-phase 120/208Y.
Big advantage is twice as much power could be brought in from a split-phase grid, and delivered as 3-phase.

Oh, I guess "ChargeVerter" takes care of that. But the 3 inverters need the ability to create 3-phase L2 & L3 from the L1 of grid.
Here's a tip if you make that feature available: Adjust voltage of L2 and L3 to match L1. With my Sunny Island, 125V L1 is passed through, but L2 and L3 are rock sold 120V; that isn't ideal.
 
How is the 6000 making 3 phase from it's native split phase? Is each unit using both half's in parallel (so output is same as 6500) or is each half of wach unit making it's own phase (so unit A is making phase 1&2, B is 2&3, C is 3&1)?
 
At some point I will be getting rid of my rotary phase converter and doing this to run CNC equipment.

Could I still use the inverters to get split phase power too to service my standard loads @Markus_EG4
 
timselectric said:
I would assume that it will be a 120v/208v 3-phase system.
Click to expand...
I have a 2500 watt load for the critical loads side(120/240) and I have a 10hp CNC lathe, 15HP CNC mill and a CNC plasma that is single phase.

I would really love to have a solution that fits everything. I already have plenty of battery and solar power.

Open to any tips or ideas!
 
automatikdonn said:
I have a 2500 watt load for the critical loads side(120/240) and I have a 10hp CNC lathe, 15HP CNC mill and a CNC plasma that is single phase.

I would really love to have a solution that fits everything. I already have plenty of battery and solar power.

Open to any tips or ideas!
Click to expand...
If it is as I expect, it would work for that.
Just a little tricky balancing the single phase loads for maximum output.
 
timselectric said:
If it is as I expect, it would work for that.
Just a little tricky balancing the single phase loads for maximum output.
Click to expand...
If the inverters are in 208 mode, I wouldn't be able to get 240 from them would I? Also I only have single phase input, but I can use my MPP 8048's to work as chargers from solar / grid.
 
teal95 said:
How is the 6000 making 3 phase from it's native split phase? Is each unit using both half's in parallel (so output is same as 6500) or is each half of wach unit making it's own phase (so unit A is making phase 1&2, B is 2&3, C is 3&1)?
Click to expand...

I currently lack the documentation for this as well. However, I would presume it operates similarly to the 18kPV setup with three inverters for 120/208 VAC.

1717598164935.png
 
I would like to be able to stack inverters specifying 120 degree and 180 degree angles, so it would have 4 hots L1, L2, L3, L4 and a neutral N. That would give 120/208Y as well as 120/240V split-phase. But selection in mine has to be one or the other.

There are quite a few AIO with 2x 120V legs, able to be paralled, stacked, or set for 3-phase. With them, only 2x inverters needed to make 120/208Y. With 3x inverters, there is balanced drive strength on all legs, and if any one fails you could reconfigure to still have 3-phase. I'd like to be able to use 2x of those inverters, 4x 120V legs, to get split + 3 phase.

With 120/208Y, I feed 120V grid input (I have split phase) to the master as L1, and slaves create L2 and L3.
It is able to backfeed grid with GT PV as well. Limited to 6.7kW (56A) either direction.

You could of course use an auto-transformer to create split-phase from one 120V leg.

You can also use 2x auto-transformers to make the split-phase L4 off L2 and L3, at least theoretically. My attempts of doing that (and bringing in split-phase power from the grid to my 3-phase setup) had "issues". I think it was OK isolated from grid, but I didn't load the split-phase.

Or an isolation transformer to make 120/240V from 208V.

But as Tim says, many/most 240V appliances also work fine on 208V. Even those that use neutral, e.g. some dryers with 120V motors.
 
Most Multi. Family dwellings (apartments and condominiums), have 3-phase services. But only one of the split-phases are sent to each dwelling.
(120v/ 208v split-phase)
 
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