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powmr 5000 hybrid inverter

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WHI13tan

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Those of you running these or are familiar with them do you you know if three units can still be ran in 120/240v split phase layout. I have an email to the company but haven't received a response back yet. It makes sense when i have two units that they can do this easily with one powering one leg and the other the second but with three units im just not seeing how it works. The simple diagrams they post are always three units in three phase or single phase. Basically trying to see if i need an even number to keep the 120v/240v split phase.

Thank you,
 
Understand that this is all just trying to think it through based on my understanding on how parallel and stacked setups work. 2 HF AIO's stacked gives you 2 phase output, with shared neutral, that is set 180 degrees apart so as to appear as 120/240v split phase. 3 AIO's stacked therefore gives you 3 phase and the appropriate degrees apart.

Parallel units run in the same phase and voltage. So if you parallel 2 together you see the same voltage output on one phase but the wattage of each adds together.

Now you ask can you set 2 AIO's in parallel and than with one AIO stacked? It seems to me you would create a case where one phase of the two phase output has double the wattage as the other from the single stacked. (example: 1&2 paralleled gives L1 10kW but L2 from the stacked AIO only provides 5kW. I do not think this is a viable setup. But I guess you would need to hear from the company to know for sure.
 
It depends on the AIO. Some will put out 240 split phase on their own and in that case you can generally stack them, the Schnieder boxes are like this. The mfg will list how many you can stack in this for schnieder it is 5 total.

For the EG4 18k and Sol-Ark 15k you can get 240 split phase straight out of them typically and they can stack more, not sure how many. Look at the EG4 manual pages 32-37 for various configurations to get ideas. Nearly all can be dropped in place of that and do the same job.

For the Victron each inverter puts out 120v and when you connect a second unit you can just have it sync the output for more 120v current or you can have it split phase so you have a combined 240v.

DON'T make the mistake of ordering the cheaper EU inverters that are single phase 240v. They don't play nice here in the US unless you add another device called an auto-transformer which is basically a 1 to 1 transformer with a center tap to be the neutral reference.
 
robbob2112 said:
It depends on the AIO. Some will put out 240 split phase on their own and in that case you can generally stack them, the Schnieder boxes are like this. The mfg will list how many you can stack in this for schnieder it is 5 total.

For the EG4 18k and Sol-Ark 15k you can get 240 split phase straight out of them typically and they can stack more, not sure how many. Look at the EG4 manual pages 32-37 for various configurations to get ideas. Nearly all can be dropped in place of that and do the same job.

For the Victron each inverter puts out 120v and when you connect a second unit you can just have it sync the output for more 120v current or you can have it split phase so you have a combined 240v.

DON'T make the mistake of ordering the cheaper EU inverters that are single phase 240v. They don't play nice here in the US unless you add another device called an auto-transformer which is basically a 1 to 1 transformer with a center tap to be the neutral reference.
Click to expand...


I have seen what your talking about with eg4 where each unit puts out its own 120/240 split phase. I just haven't been able to find if the powmr has to line side feeds so that each unit provides split phase as opposed to one providing one leg of 120 and the other being synced to provide the second leg of 120. guess ill just have to wait for the manufacture answer.

Thank you,
 
WHI13tan said:
Those of you running these or are familiar with them do you you know if three units can still be ran in 120/240v split phase layout. I have an email to the company but haven't received a response back yet. It makes sense when i have two units that they can do this easily with one powering one leg and the other the second but with three units im just not seeing how it works. The simple diagrams they post are always three units in three phase or single phase. Basically trying to see if i need an even number to keep the 120v/240v split phase.

Thank you,
Click to expand...
If it's a clone of the SRNE HYP you can run 3 in parallel and get split phase. 10Kw on 1 leg, 5Kw on the other. Diagram attached.
I'm not certain on the older HF model.
 

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WHI13tan said:
I have seen what your talking about with eg4 where each unit puts out its own 120/240 split phase. I just haven't been able to find if the powmr has to line side feeds so that each unit provides split phase as opposed to one providing one leg of 120 and the other being synced to provide the second leg of 120. guess ill just have to wait for the manufacture answer.

Thank you,
Click to expand...

One reason they are cheaper is they only do one phase per unit and if stacked you still only get one phase per unit.

IF and ONLY if you only have 120v devices to power you can bridge from one side of an electrical box to the other so the whole box is powered from a single phase. BUT I would only do this in something like a remote cabin or a place where there will never be a need to have opposing phases. If you ever popped a 2 pole breaker in and connected up something that expected 240sp it would likely burn things up.
 
robbob2112 said:
It depends on the AIO. Some will put out 240 split phase on their own and in that case you can generally stack them, the Schnieder boxes are like this. The mfg will list how many you can stack in this for schnieder it is 5 total.

For the EG4 18k and Sol-Ark 15k you can get 240 split phase straight out of them typically and they can stack more, not sure how many. Look at the EG4 manual pages 32-37 for various configurations to get ideas. Nearly all can be dropped in place of that and do the same job.

For the Victron each inverter puts out 120v and when you connect a second unit you can just have it sync the output for more 120v current or you can have it split phase so you have a combined 240v.

DON'T make the mistake of ordering the cheaper EU inverters that are single phase 240v. They don't play nice here in the US unless you add another device called an auto-transformer which is basically a 1 to 1 transformer with a center tap to be the neutral reference.
Click to expand...
LF and HF AIO's get to split phase differently. In LF style they use a center tapped transformer for output. Thus they are a true split phase unit. The HF AIO's use two inverters whose output is controlled 180 degrees apart. They can come in one enclosure or more. The one enclosure simplifies setup and if you have several of them you maintain the even numbers of inverters.
 
were it me and I wanted split phase from an AIO I would just buy one that puts it out or install something that only does single phase in pairs.... 2,4,6,etc (to the mfg max)


My evolving plan currently includes a pair of victron miltiplus 5k/48 boxes
 
42OhmsPA said:
But 2 can be as bad as one...

3 sounds lucky to me. 😂
Click to expand...
that's my thought with three. I don't really need 15000w of power at this point but they are cheap inverters so if one goes down I still have 10000w. Its my sole power source other then hooking up to a generator so giving me redundancy is big. Seen to many people with 18kw units that go down for a reason and they have nothing.
 
Mattb4 said:
Interesting. This kind of setup also likely limits L1 with L2 (240vAC) to a max of 5kW.
Click to expand...
well by theory one leg will have 10000w of power they other 5000watts. not really different then a 6000xp that puts 3000w on each leg of split phase.
 
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