EG4 6000XP AC Coupling????

[Roshi]

Hello,
The components installed now are Hoymiles HM-1200 micro-inverter total of 2,400kw, Canadian solar 405w panels total of 3,240kw of solar, Schneider SW 4080 inverter (no mppt because i setup and ac coupling with the HM-1200 to charge the batteries and supplies energy for the loads) and pytes e-box-48100r batteries a total of 10kwh.

I'm planning on changing out a Schneider SW 4080 for a EG4 6000xp on my grandfather house. The Sw 4048 is acting out with faults, and it does not have a direct communication connection to the pytes e-box-48100r batteries. I'm interested in the EG4 6000xp because it seems good for the price but i been searching for info on the ac coupling but no luck, i saw on the manual i got online on page 32 on the table that says solar yield and something about ac coupled inverter but nothing more on the manual.

If someone knows that this inverter can take an ac couple from other inverters/micro-inverters, please let me know.

 

[FilterGuy]

@EG4TechSolutionsTeam

Hopefully that will conjure up an official answer, but since the 6000XP is an off-grid inverter, my guess is that it does not support AC coupling.

 

[EG4TechSolutionsTeam]

Hello,
The components installed now are Hoymiles HM-1200 micro-inverter total of 2,400kw, Canadian solar 405w panels total of 3,240kw of solar, Schneider SW 4080 inverter (no mppt because i setup and ac coupling with the HM-1200 to charge the batteries and supplies energy for the loads) and pytes e-box-48100r batteries a total of 10kwh.

I'm planning on changing out a Schneider SW 4080 for a EG4 6000xp on my grandfather house. The Sw 4048 is acting out with faults, and it does not have a direct communication connection to the pytes e-box-48100r batteries. I'm interested in the EG4 6000xp because it seems good for the price but i been searching for info on the ac coupling but no luck, i saw on the manual i got online on page 32 on the table that says solar yield and something about ac coupled inverter but nothing more on the manual.

If someone knows that this inverter can take an ac couple from other inverters/micro-inverters, please let me know.

The 6000XP does not support AC coupling at this time.

 

[Offgrid Jungle]

It almost did, briefly, a couple of weeks ago

 

[ScrotpusGobbleBottom]

at this time.

Oh joy oh joy oh Joy! I knew it, I could smell it from here!

 

[Roshi]

The 6000XP does not support AC coupling at this time.

You guys can make the generator input into a ac coupling too, and setting it up on the commissioning when we do the startup.

 

[TheBackRoads]

You guys can make the generator input into a ac coupling too, and setting it up on the commissioning when we do the startup.

How, I thought on Gen input it passed all loads to that input?

 

[Offgrid Jungle]

You guys can make the generator input into a ac coupling too, and setting it up on the commissioning when we do the startup.

With the new grid boost feature added in the last firmware update, why shouldn't I connect my grid input to the gen input terminals? The 6000XP would "see" the gen running 24/7 and tap into the power as needed. What am I missing?

 

[Rednecktek]

With the new grid boost feature added in the last firmware update, why shouldn't I connect my grid input to the gen input terminals? The 6000XP would "see" the gen running 24/7 and tap into the power as needed. What am I missing?

I doubt the AC Input would back feed enough (at all) to get the micro converters synced up.

 

[Offgrid Jungle]

I doubt the AC Input would back feed enough (at all) to get the micro converters synced up.

I’m suggesting connecting my grid input to gen input, leaving the grid input empty. Use the gen input as the grid input LOL. You wouldn’t need both. I tested my generator by manually starting it. The share feature worked great.

 

[fafrd]

With the new grid boost feature added in the last firmware update, why shouldn't I connect my grid input to the gen input terminals? The 6000XP would "see" the gen running 24/7 and tap into the power as needed. What am I missing?

Is this new Grid Boost feature documented somewhere?

What does it do?

 

[Bananaman321]

With the new grid boost feature added in the last firmware update, why shouldn't I connect my grid input to the gen input terminals? The 6000XP would "see" the gen running 24/7 and tap into the power as needed. What am I missing?

Unless you have the AC coupling function available hooking grid to the generator port will prioritize battery charging with grid power I don't know if there's any way to get around this.

 

[Bananaman321]

You guys can make the generator input into a ac coupling too, and setting it up on the commissioning when we do the startup.

This is a split phase 6kw inverter with 8K of PV input made by Rich solar, it is an outdoor rated hybrid with AC coupling function it is on sale right now for $1299 at Watts247 it must contain an auto transformer because it weighs 90 pounds which is incredibly heavy for a 6000 watt inverter.

Nova 8kPV 6kw split phase output, 2 x 600V, 4kW MPPTS – Watts247 Wholesale

watts247.com

 

[fafrd]

This is a split phase 6kw inverter with 8K of PV input made by Rich solar, it is an outdoor rated hybrid with AC coupling function it is on sale right now for $1299 at Watts247 it must contain an auto transformer because it weighs 90 pounds which is incredibly heavy for a 6000 watt inverter.

Nova 8kPV 6kw split phase output, 2 x 600V, 4kW MPPTS – Watts247 Wholesale

watts247.com

Nothing about surge rating.

Also, where did you see anything referring to AC-coupling?

What is it you find appealing about this inverter compared to the 6000XP?

Oh, I get it - it must be the ‘Configurable color with the built-in RGB LED bar’

 

[DIYrich]

6000xp switches completely to grid/gen, so the power must be moderated by the device supplying the power. The micro inverter needs to be grid forming. If you have that, the grid forming device MAY be able to moderate the production.

 

[Bananaman321]

Nothing about surge rating.

Also, where did you see anything referring to AC-coupling?

What is it you find appealing about this inverter compared to the 6000XP?

Oh, I get it - it must be the ‘Configurable color with the built-in RGB LED bar’

Couldn't really find a whole lot out about the surge rating but if you read the manual it does have AC coupling it is a hybrid inverter it is outdoor rated and is cheaper than the 6000 XP I just thought it might be appealing to someone else.

Though judging by the weight of it I imagine it is transformer based which I could also imagine would give it a pretty healthy surge capacity.
If surge capacity is that big of concern you probably needed a bigger and inverter anyways!

I'm just putting it out there you wanna know more do your own research.

 

[fafrd]

Couldn't really find a whole lot out about the surge rating but if you read the manual it does have AC coupling it is a hybrid inverter it is outdoor rated and is cheaper than the 6000 XP I just thought it might be appealing to someone else.

Though judging by the weight of it I imagine it is transformer based which I could also imagine would give it a pretty healthy surge capacity.
If surge capacity is that big of concern you probably needed a bigger and inverter anyways!

I'm just putting it out there you wanna know more do your own research.

Found the manual: https://cdn.solartex.co/wp-content/...J2*MTcyNDExMjIxNC4xLjAuMTcyNDExMjIxNC4wLjAuMA..

You are correct that ‘Program’ 38 does appear to support pass-through of AC-coupled power on the AC Output (but not clear whether AC-coupling is supported when off-grid).

Also found the surge rating:

3600W / leg for 20ms

9721W / leg for 1ms

 

[Bananaman321]

Found the manual: https://cdn.solartex.co/wp-content/...J2*MTcyNDExMjIxNC4xLjAuMTcyNDExMjIxNC4wLjAuMA..

You are correct that ‘Program’ 38 does appear to support pass-through of AC-coupled power on the AC Output (but not clear whether AC-coupling is supported when off-grid).

Also found the surge rating:

3600W / leg for 20ms

9721W / leg for 1ms

I'm kinda thinking it is an auto transformer based unit judging by the 90# weight and the lower DC to AC efficiency and no mention of idle currant.
But it is a monster at 20 + inches wide 28 inches tall and 9 inches deep. Retail price is $2000

 

[Bananaman321]

I'm kinda thinking it is an auto transformer based unit judging by the 90# weight and the lower DC to AC efficiency and no mention of idle currant.
But it is a monster at 20 + inches wide 28 inches tall and 9 inches deep. Retail price is $2000

It is an LVX6048WP Clone
Same exact weight and size dimensions and almost identical manual only a few more pages in mpp manual.

https://www.mppsolar.com/v3/lvx6048wp/

 

[ChrisG]

I'm kinda thinking it is an auto transformer based unit judging by the 90# weight and the lower DC to AC efficiency and no mention of idle currant.
But it is a monster at 20 + inches wide 28 inches tall and 9 inches deep. Retail price is $2000

I’m sure the IP65 rating is leading to weight. It seems like a sealed unit so sure it has a large heatsink.

 

[Bananaman321]

I’m sure the IP65 rating is leading to weight. It seems like a sealed unit so sure it has a large heatsink.

Yes, I find this to be a good thing because they are wicking the heat out and away from the electronics and a lot of passive cooling goes on giving the fans a longer life I notice on my 18 KPV the fans usually don't even kick on until it's producing between 6000 and 8000 pv watts depending on the the load.

In my opinion this should give the electronics a longer lifespan because they will not be subject to the moisture in foreign matter that can possibly add contaminate the circuitry prematurely.

 

[fafrd]

The 6000XP does not support AC coupling at this time.

“At this time” turned out to be a hint after all…

Just saw the latest manual for the EG4 6000XP (V1.3.2) and support for AC-Coupling has now been added (see section 5.11 and 6.4) https://eg4electronics.com/wp-content/uploads/2024/04/EG4-6000XP-Manual.pdf

‘AC coupling allows the user to add onto an existing grid tied solar system. PV comes from the existing system while the AC coupled inverter controls battery charging and any extra PV coming into the system. This setting allows the user to still have power off grid. The inverter can accept PV inputs to both MPPT channels and AC coupled solar input simultaneously.’

 

[Offgrid Jungle]

So, it is just a gen assist scenario under a different name. As soon as gen assist came out a couple of months ago, I started shopping for a small inverter to feed in thru the Gen terminals. This makes my sketchy idea legit.

 

[ChrisG]

So now I want to put grid into the Gen port so grid can be used for boost/charge batteries if not enough PV. A way to blend incoming AC with inverter.

Am I crazy thinking about trying this? Maybe @Zapper77 can weigh in.

 

[fafrd]

So, it is just a gen assist scenario under a different name. As soon as gen assist came out a couple of months ago, I started shopping for a small inverter to feed in thru the Gen terminals. This makes my sketchy idea legit.

I suspect it is more than that. You never need to shift frequency for a generator and the last Note of section 5.11 states:

‘NOTE: If looking to frequency shift when AC Coupling, it is recommended to set the Start SOC to 99% and the End SOC to 100%.’