5k growatt question

chadjones99 said:

NO the 5k was about the growatt transformer .. I have a growatt 8kw split phase 220 inverter

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Ah ok
Now I'm with you.

So while looking at the growatt 5 kw transformer I had been asking questions on that too because my only experience has been with an outback auto transformer years ago, that would step up or down as needed ( and wired ) Im having a hard time finding info on the growatt auto transformer because all the videos and docs refer to using it to split 240 single phase from the growatt 5kw inverter.

timselectric said:

Ah ok
Now I'm with you.

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So I can see why you mixed them up . most people it seems with this transformer are using it differently than I want too , but it may be easier to get the victron transformer as their wiring diagrams are easy to find and under stand

chadjones99 said:

So I can see why you mixed them up . most people it seems with this transformer are using it differently than I want too , but it may be easier to get the victron transformer as their wiring diagrams are easy to find and under stand

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The victron has a higher capacity, too.
At least, the one that I have heard of.
100a , if I remember correctly.

well, I wish the maker of this transformer had more documentation available. Just found this video.. even tech support at signature solar had it wrong. I ask them could I not supply power N & L1 to get 240 output and they said no.. watch this video I found: " " ( copy paste the link did not work )
I had already canceled my order with signature solar because of the wrong data they gave me. I thought I was right but hey I'm, not the expert ... anyway I order a Victron through Amazon ( which cost me about 200$ more ) but Im probably going to keep my order on the Victron cause 1 ) Amazon has it now and the other transformer from signature is on backorder 2) Victron did a GOOD job making wiring diagrams available online.
Now the Victron says its rated 100 amps, not sure where that's coming from . cause the manual says 32 Amp or 7.2 KVA , or an unbalanced load of 4.8 kva
spending more money but kinda prefer a company that can produce documentation
If I had seen this video yesterday I would have kept more order with signature solar on the 5 kw transformer
not to beat up on signature solar, I have had good luck with the tech support on the inverter I bought .. just they probably need to get more data on the transfer for their techs

I am currently using that Solar Edge auto transformer.
I like the compact design. And, it just works.

timselectric said:

I am currently using that Solar Edge auto transformer.
I like the compact design. And, it just works.

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I hear ya , I was looking for someone that could verify it would work in the setup I need but could don't find anyone to concur ( until I found that video , which by then was to late ) . Also when tech support said it could not be used like that... kinda did not want to risk the $$ to get something and not have it work for me, so I ended up paying more $ for the info that the Victron would ..

Well, I said that it would.
But, I understand that you don't know me.
And, it's always good if you can get more people to confirm something. Before you take the chance of wasting money.

timselectric said:

Well, I said that it would.
But, I understand that you don't know me.
And, it's always good if you can get more people to confirm something. Before you take the chance of wasting money.

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It's not that I didn't trust you. I was looking for someone to explain it I.E. = L1 is input 120 volt to transformer and N in N input to Neutral spot , then connect L2 from the transformer as one leg ( L2 ) and the L1 line as the other leg = 240
Then when I got tech support online and they said NO, kinda thought they were wrong,really made me doubt myself

PS I sent the video link to the tech support person I talked with , not as a I told you so, but more of hey maybe something you should know ( to help others )

BY the time I paid Amazon, with free shipping... it only ended up being about 150$ more for the Victron
I am kind of partial to the Solar Edge, I like that it has a temperature sensor.

The victron is a good unit. It will easily do the job for many years.

you know I could be wrong I was also mixing up the solar edge transformer & the Growatt transformer, verify similar ..
So maybe the growatt wont do it but the solar edge will ???

Any transformer can step up or down.

The configuration I am working on has (3) SPF-5000-ES for 15K with 40kW of batteries.

I am planning to install a 3000kw Growatt inverter with about 3K of solar. This inverter will only power the lights and AC in the power shed. I will use this with a Generac 7.5k PowerPac as a genset. It will only run 120V from this config so no transformer issues. So I can program the inverter to start and charge the batteries when SOC drops below a specified percent.

Basically I'm using the inverter as a High Current charger.

Any thoughts or suggestion. I welcome your critique.

How about rectifying generator output and feeding to the inverter PV input?

shinning said:

How about rectifying generator output and feeding to the inverter PV input?

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Should work but load power factor seen by the generator will be poor.

AntronX said:

Should work but load power factor seen by the generator will be poor.

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Well, I know rectifying AC gives a higher DC voltage. How poor exactly? For say 3KW generator