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Megarevo RxLNA Discussion

I have 2 of them and would personally buy another. There are grid-tie issues that others are facing, but I'm hopeful that these will one day get resolved. I bought my 2 units for parallel use before parallel firmware was released, but was promised. MR did deliver on the parallel firmware, and later delivered on the generator firmware. I feel that the hardware is reliable and up to the task to be a solid performer, it just needs a bit more work on the software side. Its unfortunate that these issues weren't resolved before released, but I'm glad they're continuing to release firmware updates.
 
Thank you for that, that's kind of what I learned from this thread. The Lvx6048 kind of had the same growing pains. I bought 1 with intent to add a second if needed but they can't get them to parallel properly and quit updating firmware.
my monthly avg 15 min peak is 5.5-6.3kw so I think one of these would work well
 
I don't have any real gripes with mine either. May look to buy another to parallel. As mentioned, solid platform for the cost, but development on the firmware has been slow. Promising that there has been re-badging. Puts hope in that the support does not end like it sounds with other makes.
 
Durk_2007 said:
For those of you who have one would you buy it again? And is the blue sun BSE-8KLNA the same inverter ( can use megarevo updates). I got bit by the LVX6048 and looking for a replacement
Click to expand...
It does have some bugs but for its price point and features it’s a lot of bang for the buck. I’d buy again
 
Durk_2007 said:
For those of you who have one would you buy it again? And is the blue sun BSE-8KLNA the same inverter ( can use megarevo updates). I got bit by the LVX6048 and looking for a replacement
Click to expand...
Would never consider buying one UNLESS you have a local retailer/distributor. The most support you can expect from Megarevo is sending you firmware. Warranty direct is worth nothing. Buggy firmware, poor documentation. It does look solidly built, and it's very heavy. Looks like every other shipment comes with broken Cts, which are loose in the box.
 
That part is true. I had both a broken Wifi dongle and a broken CT. My distributor, GSL, shipped out replacements relatively quickly, however.
 
Same, I had broken CTs but my father in law, just got the same inverter and it was packaged and shipped better than mine was. Also no broken parts.
 
Ok everyone,

I had this same issue with it not using the battery properly at night. And I might of found the issue.

R8KLNA

I flipped the CT back and forth and played with many settings.
When running off grid everything was fine.

Because offgrid works great it must have had something to do with the CT.

My fix was pointing the arrow of CT to the inverter and to connect CT clamp L1 to Port CT2
AND CT clamp L2 TO port CT1

My suggestion is to try every direction with the CT untill you have desired calm working inverter that discharges at a normal speed when used in self consume mode

I think they mass produce these inverters and they didnt check the CT clamps and ports for errors during the manufacturing.

Kind regards,
SXM
 
matrix7y7y said:
My fix was pointing the arrow of CT to the inverter and to connect CT clamp L1 to Port CT2 AND CT clamp L2 TO port CT1

My suggestion is to try every direction with the CT untill you have desired calm working inverter that discharges at a normal speed when used in self consume mode
Click to expand...
Do you have pictures/screenshots of power grapgs before/after you altered the CT's? ?
 
If you're on old firmware, check out this other thread.

diysolarforum.com

Megarevo 8K Firmware Update

I've been talking with the folk at Megarevo and have the files to do the update but I think my computer and the megarevo aren't talking. It looks like when I plug the computer into the USB-c of the Megarevo I should get a COM port generated at the computer. But nothing comes up. In the update...
diysolarforum.com diysolarforum.com

I thought this was just a parallel inverter issue, or something with my panels. Turns out it was a bug in the firmware that doesn't maximize mppt 3/4. It is also SO VERY strange that parallel inverter strings are nearly identical. Hmmm.
 
eleceng1979 said:
Does anyone have existing grid tie PV inverters in use with these inverters? The manual has zero mention of AC coupling. The inverters seem to be pretty nice, with the exception of the firmware/software which is typical of the imported inverters.

I have a need to add batteries to existing grid tied systems. The only solutions that appear solid/trouble free are outback/schneider for my AC coupled usage due to KW in/out required. I am drawn to these inverters due to larger KW output on the larger models. I have a project with 3 x 6.0KW SMA GT's and wanted to try and reuse the GT's, but appears that rewiring to DC coupling would be the only solution with the Megarevo's. Even with other solutions I planned on rewiring 1 or 2 GT's and trying to keep a mix of both DC and AC Coupling.
Click to expand...
I have the same situation and question. I have existing PV micro-inverters that are GT, so I would need AC coupling to my ESS (hybrid inverter battery system). I really want to be able to keep using PV power when utility is down, so I need to have the hybrid inverter between my meter and my PV system, in order to form a micro-grid. It's not clear to me whether the MR 8K supports this.
 
FabledAble said:
I have the same situation and question. I have existing PV micro-inverters that are GT, so I would need AC coupling to my ESS (hybrid inverter battery system). I really want to be able to keep using PV power when utility is down, so I need to have the hybrid inverter between my meter and my PV system, in order to form a micro-grid. It's not clear to me whether the MR 8K supports this.
Click to expand...
Yes, I asked this question to Megarevo back in December. I was informed that with the new firmware update I should be able to connect my Enphase to gen.
 
NYCER said:
Yes, I asked this question to Megarevo back in December. I was informed that with the new firmware update I should be able to connect my Enphase to gen.
Click to expand...
That would be great! Is that update already out? Have you or anyone else tried this?
I'm curious how exactly it's supported. Firstly, the "gen" connection has to "show" grid-like voltage and frequency so that the micro-inverters would start producing. Secondly, it would be best to use frequency-watt to control micro-inverter power output; e.g. when batteries are full, alter frequency to ramp down production. I guess with the firmware it could at least just shut off the "show" voltage so that the micro-inverters just stop producing, but I hear that this kind of sudden flipping is bad for the longevity of the equipment.
 
matrix7y7y said:
My fix was pointing the arrow of CT to the inverter and to connect CT clamp L1 to Port CT2
AND CT clamp L2 TO port CT1
Click to expand...
I tried that yesterday.
Reversed direction of the CT's (arrows pointing towards the inverter instead of the grid) & exchanged the L1/L2 RJ45 plugs on the inverter.
All fans started going full speed and Inverter started to discharge my batteries at full capacity.

It is not the/a solution for me.

Could you provide some more info what youe issues were before and after you made the switch(es) ?
 
good day, I need some help with my Bluesun R8KLNA:

My batteries are: Lithium Ion raw cells salvaged from old bmz ess 15inr19/66-54, no bms

i tried to translate from german
nominal voltage - 55.5vdc
charge voltage 61.5v
capacity 121.5 ah
charging current 90a

I need to know what would be the settings for these batteries on the R8KLNA

charge voltage - tried to set it to 61.5 but the most it allows is 58v
battery end volt - i set this to 48v
battery OVP - 58.5v
charge current - currently set to 35a

any assistance is welcomed, i'm reading the forums but havent found anything to assist asyet, its my first system total newbie in the caribbean trying a ting, thanks
 
kwabdul said:
good day, I need some help with my Bluesun R8KLNA:

My batteries are: Lithium Ion raw cells salvaged from old bmz ess 15inr19/66-54, no bms

i tried to translate from german
nominal voltage - 55.5vdc
charge voltage 61.5v
capacity 121.5 ah
charging current 90a

I need to know what would be the settings for these batteries on the R8KLNA

charge voltage - tried to set it to 61.5 but the most it allows is 58v
battery end volt - i set this to 48v
battery OVP - 58.5v
charge current - currently set to 35a

any assistance is welcomed, i'm reading the forums but havent found anything to assist asyet, its my first system total newbie in the caribbean trying a ting, thanks
Click to expand...
Did you try to set it to lead acid, set the correct voltages and then set it back to lithium?
 
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