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6 MWh SRNE ASF48100U200-H 10kw.

Ya, I know - gotta be patient, - not by strongest trait !
I was looking at a Amensolar 10kW unit that is reportedly low idle (50W) and parallelable, not a bad price (just under $2k each) but it seems these units share some bits with MUST inverters (I am told) and that worries me given the software problems people have reported on the MUST inverter series. Patience Patience Patience - But it's November and idle currents are eating up too many kW's each cloudy day...Patience...

Now I have to wait for that new 12k to come out, then wait for people to get them and try them out, see if any issues show up...ok everything is working - just let the MPP's run, and do their job...see what RedNeckTech is up to...
 
OffGridForGood said:
Ya, I know - gotta be patient, - not by strongest trait !
I was looking at a Amensolar 10kW unit that is reportedly low idle (50W) and parallelable, not a bad price (just under $2k each) but it seems these units share some bits with MUST inverters (I am told) and that worries me given the software problems people have reported on the MUST inverter series. Patience Patience Patience - But it's November and idle currents are eating up too many kW's each cloudy day...Patience...

Now I have to wait for that new 12k to come out, then wait for people to get them and try them out, see if any issues show up...ok everything is working - just let the MPP's run, and do their job...see what RedNeckTech is up to...
Click to expand...
Yes, patience is a virtue.....so they say....
 
Zwy said:
I've been thinking what I should use for powering the shop. this just might be what I will install. I'm not in a hurry, it probably would not be until late next year before I start.
Click to expand...
excellent! - we can all watch for your install, and what you find running that new model...beta testing for us! ;)
 
I can totally relate - same here,
I am committed to up-grade my MPP's some time over the next couple years, (I would like 20-24kW output and lower idle) but when?
(I will need to figure out "how" to do it, since the entire shop is running on the MPP's -plus most of the house next door- and to upgrade I will need to pull all the existing gear out, to put the new in...so what runs the shop during that switch-over process? the back up generator$?
Building a new electrical area beside the existing one would work better for set up and then one day a shut-down and switch over from existing to new, but that would mean major changes to other things in the shop, not very convenient. Yeah, have to think about this...
 
I have connected the Battey BMS with RS 485 and when the battery is fully charged Error 64 BMSovervolt is appeared. Do you have any idea why it happens? My battery is 51.2 200AH Lifepo4 and I have set the LFP 16 battery type.
 
Last edited:
Tun555 said:
I have connected the Battey BMS with RS 485 and when the battery is fully charged Error 64 BMSovervolt is appeared. Do you have any idea why it happens? My battery is 51.2 200AH Lifepo4 and I have set the LFP 16 battery type.
Click to expand...
Not really, just ideas...
What battery / BMS? What is your bulk charge voltage?
I suspect the BMS is programmed to charge to aggressively trying the take the cells to 3.6V or higher, I also suspect the cells are out of balance; which is causing a cell to 'run' and throw the BMS error.
I'd suggest forgetting about BMS communications, set battery type to user, bulk charge to 55.2V or 55.6V and float at 54.8V.
I'd also suggest establishing BMS communications with a PC so you are able to see individual cell data.
If you disconnect the BMS from the inverter without setting battery type to user the inverter will throw an error but it will still function.

Oh an welcome to the forum.
 
OffGridForGood said:
excellent! - we can all watch for your install, and what you find running that new model...beta testing for us! ;)
Click to expand...
Not if I order one first ?.
If I do decide to order one I'll be sure to fully abuse this one seeing what it is capable of. I'm curious how it would handle the electric dryer and the well pump running while the air compressor kicks on. It handles the dryer and well pump just fine (along with the rest of the house) , unfortunately SA doesn't catch the peak, I've seen just north of 190a on the shunt.
... It's a good thing I didn't know how addicting this renewable energy stuff would be before I started.
 
42OhmsPA said:
Not really, just ideas...
What battery / BMS? What is your bulk charge voltage?
I suspect the BMS is programmed to charge to aggressively trying the take the cells to 3.6V or higher, I also suspect the cells are out of balance; which is causing a cell to 'run' and throw the BMS error.
I'd suggest forgetting about BMS communications, set battery type to user, bulk charge to 55.2V or 55.6V and float at 54.8V.
I'd also suggest establishing BMS communications with a PC so you are able to see individual cell data.
If you disconnect the BMS from the inverter without setting battery type to user the inverter will throw an error but it will still function.

Oh an welcome to the forum.
Click to expand...
Thanks. My battery is SRNE Lifepo4 battery. Also, you can run 1hp well pump without problem and it has 40A(8000W?) inrush.So, is that one 220V pump? I have a 1.5hp surface jet pump for deep well. Could the 10KW Inverter handle the surge load when other loads are not running?
 
Tun555 said:
Thanks. My battery is SRNE Lifepo4 battery.
Click to expand...
I've looked at them but I can't bring myself to purchase a pre-built due to the cost savings of building my own. Someday, maybe.
Tun555 said:
Also, you can run 1hp well pump without problem and it has 40A(8000W?) inrush.So, is that one 220V pump? I have a 1.5hp surface jet pump for deep well. Could the 10KW Inverter handle the surge load when other loads are not running?
Click to expand...
Yes, 0 issues running it along with the rest of my house. I see no reason the inverter couldn't handle it, however your limiting factor may be the BMS in your battery. I have 3 batteries in parallel, I did test running my pump with 1 battery using 305ah cells and a 300a BMS, there were no issues.
 
OffGridForGood said:
I didn't implement the "simple display" part - at least not yet!
I have to figure, will I put up a small monitor showing the Solar Assistant main display - shows the battery level loads and how much incoming solar all on one easy view,
Or set up a Red Light - Green Light above the dryer - above 52 volts = green otherwise Red?
What do you guys think?
Click to expand...
Give her / drier their own inverter and battery. Have it set to only power up the drier when there is enough electricity in it for a load. Charge it's batteries however you want. Expensive, yes, hilarious, yes.
 
Tun555 said:
I have connected the Battey BMS with RS 485 and when the battery is fully charged Error 64 BMSovervolt is appeared. Do you have any idea why it happens? My battery is 51.2 200AH Lifepo4 and I have set the LFP 16 battery type.
Click to expand...
is the over-voltage error for the whole battery voltage? - then check that the inverter charging parameter isn't set higher than the BMS max voltage setting.
is the over-voltage error for a single cell voltage? - then this may be a single cell "runner" that reaches high voltage while all the other cells are at a lower voltage. ie a balance issue.
LFP 16 type - there are a few batteries on the market using 15-cells rather than 16. I am not sure if your battery could be this type, best to check and be sure. A 15-cell battery being charged with a 16-cell settings will reach over-voltage level.
 
Do these inverters use frequency-shift load management? I read through the manual and didn't see any mention, so I'm assuming not. I've got Enphase micros on some panels that I'd like to keep.
 
Looks like I need to connect to the BMS's with the laptop and reconfigure my voltage %s that I just had to tinker with...
My shunt is showing over 30% soc.
 

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42OhmsPA said:
Looks like I need to connect to the BMS's with the laptop and reconfigure my voltage %s that I just had to tinker with...
My shunt is showing over 30% soc.
Click to expand...
I played with where on the main bus the battery pack connects, and with what ga. wire, and got my lower and higher Ah packs to stay closer to same SOC over the charge/discharge range. I have two 100Ah server racks - connected these up parallel and run pos from one to pos bus, and neg from the other to neg bus, using 4AWG wire. The other packs are all DIY 280's and 304Ah - those are connected with 1AWG.
To play with where a pack connects to the main bus, I used a vise grip to just clamp the ring terminal onto the copper bus, and moved this set up away or closer to the main 4/0 wire that goes to the Inverter's bus connection. The vise grip gave me a way to try spots without drilling a lot of holes for testing. maybe you can do this too.
 
OffGridForGood said:
I played with where on the main bus the battery pack connects, and with what ga. wire, and got my lower and higher Ah packs to stay closer to same SOC over the charge/discharge range. I have two 100Ah server racks - connected these up parallel and run pos from one to pos bus, and neg from the other to neg bus, using 4AWG wire. The other packs are all DIY 280's and 304Ah - those are connected with 1AWG.
To play with where a pack connects to the main bus, I used a vise grip to just clamp the ring terminal onto the copper bus, and moved this set up away or closer to the main 4/0 wire that goes to the Inverter's bus connection. The vise grip gave me a way to try spots without drilling a lot of holes for testing. maybe you can do this too.
Click to expand...
Thanks I'll check that out as well.

I think the 305ah pack is the outlier in current draw because of a difference in IR between Envision and EVE, I kept all wiring within length 1.5".
I had adjusted SOC voltages in JBD BMS tools prior to bringing everything back online. I'm betting I have the 305ah pack values different than the 230ah packs, I'm assuming that's why the 305ah pack % is much lower than the 230ah's.
 
Also something maybe worthy of note. I complained to ali baba about my wrong model number and they sent me the UL certification, which covers both models. Same exact inverter confirmed
 
nickj said:
Also something maybe worthy of note. I complained to ali baba about my wrong model number and they sent me the UL certification, which covers both models. Same exact inverter confirmed
Click to expand...
Good info.

How are you liking it so far?
 
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