diy solar

diy solar

Seems MPP dropped a new inverter...a split phase 10KW

Sanwizard said:
Very Interesting. The 12K manual removes parameter 38, which in the LVX6048WP, is AC Output Coupling.
That makes me even more nervous.

Sure wish Ian at Watts247 would test it and upload a video, or MPP themselves damnit. I dont have the funds anymore to be a test lab. But alas, it would be fun!
I need a quiet weekend without kids around and no honey do's. I will pose the question to MPP first though.
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I think he is slowly selling off all of his MPP solar inverters. You can see with the fact that even he is selling his LV6548's -which have historically been the most reliable of these inverters- at a discounted rate. He is selling off as much inventory as he can and not putting up any new units or versions.
 
koppted said:
I think he is slowly selling off all of his MPP solar inverters. You can see with the fact that even he is selling his LV6548's -which have historically been the most reliable of these inverters- at a discounted rate. He is selling off as much inventory as he can and not putting up any new units or versions.
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I discussed this with him, I am a customer of his and he told me what happened.

MPP decided to sell direct to the public. Meanwhile Ian was getting constant phone calls and emails from people that did not buy from him looking for advise and support.

I don't blame him for quitting MPP, I would do the same if I was in his shoes.

I do know he has a very large inventory of LV6548's and with new inverters coming out daily with better features and support from the manufacturer, he probably wants to move the remaining units out. He must be busy because I contacted him again awhile back and it took him a week or so to get back to me. Usually he responds the same day. Or he went on holiday, good for him.
 
Zwy said:
I do know he has a very large inventory of LV6548's and with new inverters coming out daily with better features and support from the manufacturer, he probably wants to move the remaining units out.
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Typical for any business really, like what happens at car dealerships every year.
Those 250v PV 6548's are clearly a solid inverter, for anyone looking for an inverter at a good price for a cabin, these still seem like great solution.
 
OffGridForGood said:
Typical for any business really, like what happens at car dealerships every year.
Those 250v PV 6548's are clearly a solid inverter, for anyone looking for an inverter at a good price for a cabin, these still seem like great solution.
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I would use them in a heartbeat. Very good inverters for the money.
 
JSchaub said:
$1700 US includes shipping
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Be weary if you are thinking about purchasing this unit. I have been back and forth with MPP Solar pertaining to the specs.
There are mistakes in the owners manual. After pointing them out they have redone the owners manual but I expect there will be more changes.
Once I am satisfied with their answers I plan to purchase this unit. I will keep everyone who is interested up to date with my progress.
 
fafrd said:
Parameter 38 says:

‘If selected, this inverter will allow on-grid inverter to feed-in power.’

This parameter is present in the 6kW but is not present in the 12kW.

All this sounds like is that the 6kW will allow AC-coupled PV power to feed into the AC input when on-grid rather than causing a fault (while the 12kW presumably enters a fault condition when excess AC-coupled PV power tries to enter the inverter through the AC input).

When off-grid, the 6kW must use a 60Hz frequency that prevents grid-tied PV inverters connected to the AC input from turning on (ON/OFF frequency-shift control).

There is probably some corner-case where this capability is useful (125% rule maxed-out with grid-tied solar so no place to incorporate a hybrid that can also inject power into the MSP), but this is a far cry short of what mainstream inverter companies such as Schneider or Victron or Magnum mean when they say they support AC-coupling…

Support for AC-coupling generally means AC-coupled PV is available to supply backup power when the grid is down.
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I just hooked up my LVX6048WPs to test the AC coupling feature. The setup is entirely off grid and ac coupling works fine with the most up to date firmware. The grid forming inverter is very bad at keeping track of where the energy comes from, but it can use any power the grid tied inverter provides for loads or to charge the battery. The grid forming inverter does frequency shift based on its perceived state of charge, but it reports a perfect 60 Hz output. I am running without BMS communication at the moment, so this method doesn’t work all that well. The grid tied inverter does see the shifted frequency and eases off as needed. The frequency ramping can be adjusted in the computer software. I have not been able to verify if the full 12 kW is available to use, but based on my limited testing it should work.
 
Letmo said:
I just hooked up my LVX6048WPs to test the AC coupling feature. The setup is entirely off grid and ac coupling works fine with the most up to date firmware. The grid forming inverter is very bad at keeping track of where the energy comes from, but it can use any power the grid tied inverter provides for loads or to charge the battery. The grid forming inverter does frequency shift based on its perceived state of charge, but it reports a perfect 60 Hz output. I am running without BMS communication at the moment, so this method doesn’t work all that well. The grid tied inverter does see the shifted frequency and eases off as needed. The frequency ramping can be adjusted in the computer software. I have not been able to verify if the full 12 kW is available to use, but based on my limited testing it should work.
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The brochure states that AC coupling is only supported for a single inverter setup. It sounds like you have parallel inverters so that could be causing problems.
 
solar8484 said:
The brochure states that AC coupling is only supported for a single inverter setup. It sounds like you have parallel inverters so that could be causing problems.
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His whole post is confusing. He says the setup is entirely off grid but them says AC coupling work fine and doesn't mention how he is AC coupling. Whether with a generator or different inverter. My guess is, like you said, he has these inverters in parallel, but it confusing that with AC coupling.
 
koppted said:
His whole post is confusing. He says the setup is entirely off grid but them says AC coupling work fine and doesn't mention how he is AC coupling. Whether with a generator or different inverter. My guess is, like you said, he has these inverters in parallel, but it confusing that with AC coupling.
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I have two LVX6048WPs. The load connection of the grid forming inverter feeds the grid connection of the grid tied inverter. The grid tied inverter feeds any power it produces out through the grid connection and the grid forming inverter can then use that power for whatever it needs. The grid forming inverter pulls the energy in through the load connection. There is no communication between the two inverters other than the frequency shifting. They also do not use the load sharing wires.
 
I bought a lvx12kwWP from MPP solar Tiwan, I used a lvx6048 for a few months. I posted some photos of the inside. So far it wants to act as a UPS mostly.
 
1201 said:
No one's buying them or talking about them anymore
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Nothing to talk about? they just work? LOL.
There are a lot of Voltronics inverters out there in service, I think the original (250v PV) MPP 6548's are pretty common set up.
A few years ago they were a low cost of entry path, today there are far more options.
I have no regrets, they were cheap, they work, they run my business and my home (okay not so much during the Great Foggy December of 2023, but that wasn't the inverters' fault!)

The 10k checks a lot of boxes,
600v PV input
parallelable
low cost - listed today at $1590 USD
high PV input (12kW)
not sure what the standby consumption is, but worry because of what we saw with the higher PV voltage version of the 6548 going to much higher standby draw.

Maybe @Will Prowse can get his hands on one and verify all it's features and or failures!
 
OffGridForGood said:
Nothing to talk about? they just work? LOL.
There are a lot of Voltronics inverters out there in service, I think the original (250v PV) MPP 6548's are pretty common set up.
A few years ago they were a low cost of entry path, today there are far more options.
I have no regrets, they were cheap, they work, they run my business and my home (okay not so much during the Great Foggy December of 2023, but that wasn't the inverters' fault!)

The 10k checks a lot of boxes,
600v PV input
parallelable
low cost - listed today at $1590 USD
high PV input (12kW)
not sure what the standby consumption is, but worry because of what we saw with the higher PV voltage version of the 6548 going to much higher standby draw.

Maybe @Will Prowse can get his hands on one and verify all it's features and or failures!
Click to expand...
It checks boxes but will it last? Not a great reputation. People who are using them bought them about a year ago but I haven't seen anyone buying them recently and the luxpower and srne units are pretty much the final nail in the coffin for the voltronics.
 
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