Xan77

Morning Guys Thanks again for all the replies and advise. So I've monitored the system these past couple of weeks after all settings changed as per advised above. I'm not sure whether about the Dyness' rating 1C etc. What my experience is: 1. I don't get inverter trips when load shedding kicks in and the load is low i.e. 800kw 2. I get Inverter trips when load shedding kicks in and the load is "high" i.e. 3000kw 3. I don't however get trips when It is load shedding already and i start using higher loads i.e. 3000kw So in summary, the inverter trips when the load is high (3000kw) and inverter needs to switch over to PV & battery during load shedding. I can however use that very same amount of load i.e. 3000kw when I ramp it up. *In all scenarios i have sufficient power both battery and PV to actually carry the load. It seems to me that it comes down what Psyclown said that it might take a while for the MPPT to ramp up before bbeing able to use higher amounts of loads?

Good morning Just an update. I've updated the firmware Copied most of the settings above (some I cannot access - don't have installer's account) Set to take load jointly It appears the system is running stable under all circumstances (sunny, rainy, cloudy, night, load shedding), provided I don't bring battery load into the equation when blended with AC. So my findings currently are: When AC first is set to the above configuration - where the battery is not used whenever AC is available, everything runs smoothly in all scenarios as stated above. When I change the AC first timing to for example 00:00 - 05:00; 14:00 - 00:00 (Meaning I want the system to use Solar & battery first during 05h00 - 14h00) I still experience inverter trips whenever the loads exceed solar power. With inverter trips, I mean the inverter self would trip, causing power failure and would restart a couple minutes later) there is no tripping of the E/L. It seems that the system does not want to blend battery power with solar and AC. It does not seem to be able to do Solar,Battery, AC. It does solar and AC blending, hybrid function on AC and solar, but would not combine all 3. As a solution, I would deactivate hybrid and keep the AC first settings as mentioned above in point 2. In that case it would only use Solar and Battery and switch over to AC if both are not enough to carry load.

Thanks a lot Psy, I'm going to give it a shot. I see i need to update firmware so I'll start with that and keep you posted. thanks again!

Hi, thanks for the help. I keep it at 90% because that is the only time the inverters does not use the battery. The moment I have a situation where battery is blended with ac i have trips. I don't mind setting the EOD to 30 or 40% but then i have trips. This afternoon I enabled take load together and set the EOD to 80%, was not even 10min when I had the first trip. Some more info on my system: AC is fed before house earth leakage so comes down to fed directly from street breaker. (I still have a mains/EL to supply rest of my loads that comes from my inverter). I have one battery shared between the two inverters (but this issue was also present even when i only had one inverter. I have lights breaker fed by EL When the trips occur, it is within the inverters, not the earth leakage. The inverters will trip. I have a prepaid meter

Hi thanks for the replies and inputs, I really appreciate it. Been struggling with these inverters for a while now. So to maintain total stability in my system without any trips my settings are usually: AC charge off AC first 00:00 - 00:00 on all 3 hybrid/take load together OFF On grid EOD: 90% but I've copied settings from another forum topic to test it out and I still had system trips. It is currently as per attachment. (Which is still the copied settings) My oberservation is that the moment the inverter has to blend battery with the ac, there are trips i.e. solar not enough, uses battery, and when solar and battery is not enough and starts to use ac with the solar battery blend, it trips. Then the other issue pertaining to the two strings, I would have changed them over etc. but the issue is exactly the same. In the morning it used the primary's solar and used 0% of the secondary and then later on it used the seconday's solar and 0% of the primary. See my initial pics it just doest make sense. No shading on either strings.

Hi I've just for interest sake changed it 80%. So now its using solar and battery, but still only uses one inverters' solar.. weirdly, now its using the other inverter's solar, see below pic. As if it does not want to use both arrays at the same time. P.s. I have noticed in the past when i do change the SOC lower than 90%, it will use solar and battery but when the EPS load exceeds solar and battery, I get a EPS overload warning and then it switches to AC. understandably, it should switch over to AC, but why the warning, does it not switch over knowing its the normal function? Then if I get a couple of EPS overloads, my battery goes into protect and warning as well.

Hi All I have 2 x Luxpower SNA5000's connected in parallel. I've got two Solar arrays each connected to an inverter (8 x 480w panels - 4 x panels per string (inverter)). Why is it that although both arrays have sufficient sun (not clouded) but only one inverter's solar is used? I basically have enough solar to produce power to the EPS but only one string/ inverter's solar is used? Is there some settings I am getting wrong? on the attached picture you can see that the inverter picks up that i have an array connected but it does not use the power. Basic settings currently: AC charge off AC first 00:00 - 00:00 on all 3 hybrid/take load together off On grid EOD: 90% I would really appreciate the help thanks Xander