SRNE 20KW parallel ASP journey.

[Kornbread]

Not sure what 30 is. How much battery capacity/soc/etc.? Wire to battery/inverter good? What is the load when it happens?

 

[42OhmsPA]

so my paralleled units which essentially is the same as this, I keep getting inverter cutouts once a day in the afternoon, likely when all my AC units are running.

I saw what I believe to be error 30 flashing on both the other day, but havent had time to track down the issue. the amp and watt pull is not exceeding the inverter capacity, but I believe i am somehow undervolting in some way on the batteries.

any thoughts?

Are you using comms? If so, disable them for a bit.

How much battery do you have?
Is there enough PV to cover the load or are the batteries draining when it happens?

 

[Zwy]

so my paralleled units which essentially is the same as this, I keep getting inverter cutouts once a day in the afternoon, likely when all my AC units are running.

I saw what I believe to be error 30 flashing on both the other day, but havent had time to track down the issue. the amp and watt pull is not exceeding the inverter capacity, but I believe i am somehow undervolting in some way on the batteries.

any thoughts?

Battery communication being used? What type of batteries?

Code 30 is battery under 10% SOC. But it is an alarm and should not affect outputs according to the manual. If you are using battery communication, I would cut the cord and run USER defined charging.

 

[uslsml]

Your situation sounds similar to what I encountered with ASP and 2/0 AWG battery cables. When HVAC starts (and PV generation is low at that same moment), the battery voltage sags too low and causes the inverter output to temporarily shut down (and then after some delay, it switches to bypass output mode). After changing to 4/0 AWG battery cables, this failure no longer occurs.

Disabling battery communication might allow you to avoid the failure by setting the low-voltage cutoff lower than the battery-specified low-voltage cutoff value.

 

[42OhmsPA]

What are the values for settings 12-15?

 

[B-Mod]

I found the limit today. I did not look earlier as I was busy but looking at the data now, the peak was 59.1 as shown on this graph at 11:50am. As you can see I was 50 for a few hours leading up to this point. I tripped the inverters on overload. I turned every thing off, then back on to clear the fault and away she went for the rest of the day. It was also charging the battery with about 55 to 65kw of solar coming in. These things are tough.

 

[B-Mod]

Zooming in closer it was 60.3kw on load, and 61.5kw of pv, when it tripped on overload.

 

[TK1979]

Zooming in closer it was 60.3kw on load, and 61.5kw of pv, when it tripped on overload.View attachment 306340

Wow! Riding that line for sure!

 

[B-Mod]

Has anyone on here reversed the fans on these units? My equipment is in my basement with a temp of around 65 to 70 degrees, and these inverters running hard are showing 70c to 75c as a temp which is 160f to 167f. Pretty hot.

I have been running with the lower covers off on all units. Not sure good or bad?

Thinking of reversing the fans physically.

 

[42OhmsPA]

I have not but those temps would certainly have me trying it.

I also have my covers off, still and my basement temps are similar. I'm not running mine as hard; I don't think I've ever seen above 60C.

I do have a small fan blowing air up from the floor toward them but I don't think it does much.

Are your screens clean on the side vents?

 

[B-Mod]

I have not but those temps would certainly have me trying it.

I also have my covers off, still and my basement temps are similar. I'm not running mine as hard; I don't think I've ever seen above 60C.

I do have a small fan blowing air up from the floor toward them but I don't think it does much.

Are your screens clean on the side vents?

Yes very clean

 

[chamilun]

Battery communication being used? What type of batteries?

Code 30 is battery under 10% SOC. But it is an alarm and should not affect outputs according to the manual. If you are using battery communication, I would cut the cord and run USER defined charging.

I really need to do that but REALLY LIKE the concept of communications.

unfortunately was out of town over the weekend and the fiance texted the house was burning up. the mini-splits and room AC all turned off

finally convinced her to go flip the switch back to line power lol, but what ended up being the problem is the AC mains circuit tripped. not sure why as I have it set to 16 amps max, but it still pulls 30. I need to dig into the settings and see why.

My inverters absolutely cut out for about 30 seconds once code 30 is triggered. the manual as you mentioned specifically says it will not affect output, but this has not been the case for mine.

 

[ZePrez]

Hope SRNE is reading this thread. They have a winner: These inverters work well in split phase. SRNE need however to address Thermal Management: Those darn things run hot...
I installed a12000 BTU split Unit, temperature inside the shed is a cool 21o C/70 o F... Yet, I regularly read DC System temperatures of 54 o C up to 62 o C when the system is charging the batteries, at 90 Amps per inverter. (Max configured is 120 Amp per inverter). We have hit a few times, 300 Amp (about 100 A, per inverter) to the Battery packs (85 kWh total), in which case temp is in the high 60 Celsius.

High temperature is the enemy of electronics, finding ways to better cool this , after all, powerful inverter, should not be the responsibility of the owner.
This needs to be corrected.

I could pull the hot air from the inverters, and throw it outside, I am however afraid of creating negative pressure that could increase the speed of the fans beyond their operating margins ... and creating all kind of weird issues. I know for a fact that, if any of the fans fail, the inverter won't start. We are off-grid, we need our inverters to run as reliably as possible.
Looking forward for the new model with integrated Breakers Would be cool if they could work with the ASP...

Peace

 

[42OhmsPA]

Mine definitely got warm today, #2 with more PV in particular.
Basement was probably 75F when I got home.




I'll try turning the air circulator / filter box I built for the coal stove on tomorrow to pull cold air from upstairs into the basement.

 

[B-Mod]

Mine definitely got warm today, #2 with more PV in particular.
Basement was probably 75F when I got home.
View attachment 307005
View attachment 307007
View attachment 307010

I'll try turning the air circulator / filter box I built for the coal stove on tomorrow to pull cold air from upstairs into the basement.

Why do I beat you on temp everyday? LOL it must be that I have 7 of them on the wall all sharing the heat. Mine are never that cold.

 

[B-Mod]

Hope SRNE is reading this thread. They have a winner: These inverters work well in split phase. SRNE need however to address Thermal Management: Those darn things run hot...
I installed a12000 BTU split Unit, temperature inside the shed is a cool 21o C/70 o F... Yet, I regularly read DC System temperatures of 54 o C up to 62 o C when the system is charging the batteries, at 90 Amps per inverter. (Max configured is 120 Amp per inverter). We have hit a few times, 300 Amp (about 100 A, per inverter) to the Battery packs (85 kWh total), in which case temp is in the high 60 Celsius.

High temperature is the enemy of electronics, finding ways to better cool this , after all, powerful inverter, should not be the responsibility of the owner.
This needs to be corrected.

I could pull the hot air from the inverters, and throw it outside, I am however afraid of creating negative pressure that could increase the speed of the fans beyond their operating margins ... and creating all kind of weird issues. I know for a fact that, if any of the fans fail, the inverter won't start. We are off-grid, we need our inverters to run as reliably as possible.
Looking forward for the new model with integrated Breakers Would be cool if they could work with the ASP...

Peace

I am really concerned also. I am seriously thinking of reversing the fans. Recycling heat can not be a good thing. I want to do one as a test, but the unit would still feed off the heat of the other units pumping the heat down low.

 

[Zwy]

I really need to do that but REALLY LIKE the concept of communications.

I REALLY HATE the concept of battery communications.

Just adds complexity leading to failures. The BMS SOC readings are another matter, no accuracy at all. Charging into the upper knee area using voltage works perfectly.

unfortunately was out of town over the weekend and the fiance texted the house was burning up. the mini-splits and room AC all turned off

finally convinced her to go flip the switch back to line power lol, but what ended up being the problem is the AC mains circuit tripped. not sure why as I have it set to 16 amps max, but it still pulls 30. I need to dig into the settings and see why.

My inverters absolutely cut out for about 30 seconds once code 30 is triggered. the manual as you mentioned specifically says it will not affect output, but this has not been the case for mine.

That takes us back to battery communication. Did I say I REALLY HATE the concept of battery communication?

 

[42OhmsPA]

Why do I beat you on temp everyday? LOL it must be that I have 7 of them on the wall all sharing the heat. Mine are never that cold.

It might be you are running yours way harder than I've ran mine, I'm jealous I don't have as much PV / loads.

What about leaving the fans as is and ducting cold air to the top?
I'm thinking there has to be some kind of logic behind them ducting them out the bottom.
Wouldn't flipping them and blowing air in create a bunch of turbulence?
Maybe flip them but also force air into the top?

 

[Zwy]

Mine run the same temp everyday. 18 foot ceilings help. Inverter 2 has only one MPPT hooked up to PV.

 

[B-Mod]

BTW they run hotter with the bottom cover on.

 

[timselectric]

My Growatts, never exceed 100°f (37°c).
But the Deye (Outside) , regularly pushes 150°f (65°c) , in summer.

 

[42OhmsPA]

My Growatts, never exceed 100°f (37°c).

Nice. What ambient temp are they in?
The fans blow air up and out, correct?

But the Deye (Outside) , regularly pushes 150°f (65°c) , in summer.

Wow. How many years has it been running like that?

 

[B-Mod]

My Growatts, never exceed 100°f (37°c).
But the Deye (Outside) , regularly pushes 150°f (65°c) , in summer.

Mine (growatts) loaded to almost 5kw never went about 100 also. I get these are 10kw SRNE's, but they have double the fans, so it has to be a airflow issue.

 

[timselectric]

Nice. What ambient temp are they in?

75°f

The fans blow air up and out, correct?

Correct, the way that nature intended.

Wow. How many years has it been running like that?

This is the second summer, I think.
I guess it's normal. Never seen an alarm.
But it still gives me an uneasy feeling.

 

[cs1234]

My Growatts, never exceed 100°f (37°c).
But the Deye (Outside) , regularly pushes 150°f (65°c) , in summer.

Is it shaded, or just sitting in the sunshine?