LionKing

We currently have 4x Narada 12V-200ah gel batteries connected in series with Infini 10KW hybrid inverter. Planning on swapping out gel batteries with 2X Pylontech US3000. Currently we have a very thick wire (probably 2 AWG) to handle massive amps (200A) that inverter can pull from the battery bank. However, all the videos I'm seeing online have pylontech batteries seem to be connected in series via much thinner cables (see video below). Can someone clarify how is the voltage not increased when batteries are connected in series, since a battery is already 48V? and how are those thin cables able to handle large amount of amps?

We currently have a snmp card in our 10KW infini inverter, thinking of switching it out with wifi card, mainly because the logging capability is useless in snmp card. Its logs are good for the current month only, all previous months get corrupted for some reason. What are the downsides of wifi card? Does it accurately keep log for each month?

Update: It stopped happening a couple of days ago, so I guess it had something to do with grid power and nothing to do with our wiring/inverter.

I'm dealing with the issue above, earlier the inverter would behave normally after 9pm, however, today its even beeping at midnight. Spoke with my installer and he said to switch Power setting from VDE0126 to VDE4105 and that the later version is more suited for our(Pakistan) grid. Something to do with voltage and frequency range. Does anyone know of the actual voltage/hz numbers for 0126 and 4105?

A bit off topic but logs in my inverter are stuck on 2018, there are no new events being reported in the logs, and when I try to delete the existing logs, it shows message "Operation Failure". How do I delete old logs and ensure new events are logged correctly?

i've been watching reading on snmp web page, all the readings look normal (as I'm watching) when the inverter starts beeping, even grid is available. Typically, when it disconnects because of grid frequency/voltage it shows warning codes 1-4. With no obvious disruption in grid, its weird to see this error, unless, for some reason grid disconnects for a fraction of a second and inverter is picking it up and going into Anti-Islanding mode.

Did you figure out the issue? My inverter has started doing the same, everyday from 5pm to 9pm

Its still happening, everyday, starts around 5pm and happens till around 8pm. We're not running any new appliance etc, so definitely nothing inside the house causing it. Any guess as to what's causing this?

Just did some measurements: L-N (Switch On): 240v L-N (Switch Off): 3v N-G: 1.3v L-N reading is same as what the inverter is reporting, surprised by the other two readings though.

From past couple of days, our Infini Plus 10KW inverter has been occasionally disconnecting from the grid and showing "07 - Island Detect" message. Interestingly, this happens only in the evening - around 5pm - 9pm, couple days it happened 8-10 times during the evening. Today it happened only twice. Is this a possible inverter issue or utility side? One thing I've noticed is that sometimes our ceiling LED lights have a dim glow at night (this has been happening for over a year now) but its completely random E.g. there will be days of no dim glow and then a week or two of dim glowing lights. Any clue?

What do you mean? why does the MPPT connected to geyser dies after 3 years?

Oh wow. I guess thats why the installer switched away from voltronics. In my area, mostly voltronics are sold/used so there are quite a few third-party repair centers as well. I'll call someone tomorrow and get their take on common issues with voltronics and repair cost. I did see GoodWe hybrid inverters being sold locally, however, don't see any mention of it on GoodWe's website, I guess they discontinued it. That would have been a good option. Cool. How many & what sized PV arrays are hooked upto it? @ChristoSnake How is data from inverter uploaded to pvoutput?

@Jaco de Jongh Thanks for the thorough reply. Which Inverters do you use now? You think its ok to add 3KW string to 2nd MPPT without having to worry about reducing life?

We have a Infini Plus 10KW installed in our house for 2 years now and its been working fine, apart from really crappy SNMP web card logger. Currently we have 5.12KW string on MPPT1, and I've been thinking about adding another 3KW string on MPPT2 - so been talking with local solar installers. During conversation the topic switched to inverters and he mentioned that they have stopped installing Infinis (voltronic in general) because of number of failures they've been getting. I've seen on this forum and on web/youtube people complaining about blown IGBTs so it seems like a common issue with Infini. Is this common failure point with other inverters as well? When the inverter fails, does it affect connected load i.e. damage from surge output etc? Is the failure catastrophic i.e. loud bang and smoke? Also wondering whether its a good idea to add 3KW string, would it overwork the inverter and cause earlier failure?

Old thread but curious if you were able to resolve the issue? are you from Pakistan?

did you guys find anything?

https://www.sealedperformance.com.au/faq/what-is-the-difference-between-cycle-use-and-standby-use/ I think cyclic is the appropriate one for Solar usage. The only thing I'm contemplating at this point is whether to disconnect float voltage after say 24, 48 hours? Because at current rate 54V x 2.8A, I'm using up over 100KWH monthly in maintaining float charge.

I went with 1.81V cut-off instead to avoid getting close to damaging end-voltage, so 43.4. Also, left Floating voltage at 54 and changed CV from 56 -> 57.2

Trying to figure out Cutoff discharge voltage but confused by this table. What does the first table really mean? In the manual it says 10hr End-Voltage is 1.80V/cell and that the battery is not able to discharge more capacity even if end voltage is lower and that doing so will damage the battery. However, in the tables it shows end voltage as low as 1.30. Should i set the cut-off voltage to 1.80V/cell - to be on safe side? Since we are almost always < 0.2C (Amps) and I don't ever see us going over 0.5C discharge current. Regarding Charging. The datasheet has following table: I think the figures above are Charging voltages and in manual under "Temperature and Floating Voltages" I found following info: I'm using Infini in Grid-Tie with Backup mode and with frequent outages - about 4 times a week, I'm guessing my "application" is Cyclic usage? so I should go with 2.35 Vpc (Charging Current) I get 56.4 charging voltage and 30C ambient temp the floating voltage should be 2.24 Vpc, so 53.76 floating voltage. Current inverter charger settings seem correct then? What are cut-off discharging and re-discharging voltages?

I have 4X Narada MPG (AGM) 12V 200AH batteries wired up to Infini 10KW for a year now. In my setup, the battery bank reaches 99% capacity (as per inverter display) and stays there, while being continously charged at 2.1A. I thought that was the needed float charge, however, I came across a setting in inverter which allows me to stop the charger if Amps are below certain value for X amount of time. Now I'm confused whether the 2.1A flow charge is needed or not? am I damaging batteries in the long run with continous 2.1A charge? Does anyone know how to do Equalization charge using infini? My current settings:

Thanks @Youda Actually, if you look at the pdf link I shared in my first post, the inrush current (> 3000W) lasts for a few milliseconds. I don't think the chart above will show that correctly, since its just showing rms value over a 1000 milliseconds? Also, you have 10KW capacity on the phase, in my case its only 3.3KW - so not sure if its ok for my inverter. We did get the printer though but found an outlet that's Not powered by the inverter and been using that. If anyone else has a 3KW or 10KW Infini, please let us know if a typical home-use laser printer works fine on it.

Planning on getting an HP Laser Printer for our home. Datasheet: http://h20195.www2.hp.com/v2/GetDocument.aspx?docname=4AA6-6825EEE&doctype=data sheet&doclang=EN_GB&searchquery=&cc=uk&lc=en Although, it uses 255W while printing, all laser printers have high inrush current at startup (> 3000W). Analysis here; https://www.donrowe.com/v/vspfiles/assets/images/laser_printer_startup_surge.pdf Since most of our home outlets are wired with the Inverter output, I'm hesitant to buy a laser printer - especially since Voltronic doesn't have any Surge Power rating for this Inverter on their website. Anyone running (or tried) a Laser Printer off of Voltronic Infini Plus?

What about VM2 and VM3?

I just spoke with my installer and he's saying that he has VM installed in his own home and it definitely gets excess energy from Grid, instead of switching completely to Grid - when PV array can't provide enough power for the current load. I assume you're refering to Rated power of the inverter, instead of PV array not making enough to run the current load?

Yea, that's what I recall from my last year's research that it was Infini Super and I think also V models that had component/board issues. Don't recall any issues with Infini PLUS. Coming back to the original question, I looked at Voltronic's website but don't see anything specific about Grid-tie support in Axpert King manual. Looks like Hybrid inverters basically do what I'm looking for and that's the Infini line. Whats the difference between regular Infini and Infini V?