LionKing

So the remaining 5kW will only be used for charging the battery bank, Not for sending energy back to the grid - since that's AC?

It's a hybrid inverter, being used in Hybrid mode (Powers loads + charges batteries + sends excess back to grid). That's why i'm confused about what happens when I cross the 10KW PV input as the manual is unclear. I asked my installer, he's saying it won't generate power from PV modules in excess of 10KW - which doesn't make sense because why would they then mention 14850 as maximum DC input then?

So rated power of 10KW basically means thats how much AC load it can handle? and it will still generate full PV power and send remaining to grid/battery.

Looking at the spec and confused a bit. The rated output power of the inverter is 10KW but max PV input is almost 15KW. Lets say my PV installation is 15KW and panels are generating 13-14KW (in ideal conditions), what will happen to extra power above 10KW? will the inverter trip, will it be used to charge the battery and/or sent to the grid? Manual doesn't say anything about this. https://voltronicpower.com/en-US/Product/Detail/InfiniSolar-10KW-15KW

Does anyone know? Current version I have is 1.0.6

Got Voltronic snmp web card 5 years ago and its firmware was never updated. Their website says its a simple one click process but no instructions on where to get the latest firmware and how to install it. Can anyone help me with it? The shop I purchased it from has closed, so no help from there.

Does anyone have experience using 48V Lithium Ion Phosphate batteries with 10KW Voltronic Infini Plus? There is a setting in snmp web card to classify battery as Li-Ion, but no details in manual? I'd like to use Pylontech UP5000 or Narada 48NPFC100 battery with this inverter, not sure if it will work well.

Have this Battery 4x 12V200AH: https://www.naradapakistan.pk/narada-mpg-series-dry-battery/ Website implies that its a AGM battery as well as a Gel battery, so which one is it? The manual says to equalize it periodically as well, however, I read online that Gel batteries should not be equalized BUT AGM batteries should be. So is it ok for me to perform an Equalization charge on these batteries?

To minimize shading losses, would this config work? MPPT Range: 200V - 650V Startup voltage: 160V 3 Strings Config MPPT1: 13A String: 8 panels = [334V - 397V STC] MPPT2: 13A + 13A inputs: Parallel 6 + 6 panels = [250V - 297V STC] or should I go with 2 Strings? MPPT1: 10 panels = [418V - 497V STC] MPPT2: 10 panels = [418V - 497V STC]

Deye 12kw hybrid datasheet: https://www.deyeinverter.com/deyeinverter/2021/04/12/【b】hybridinvertersun-8-10-12k-sg04lp3.pdf Longi 545W bifacial datasheet: https://static.longi.com/L_Gi_LE_T_TMD_059_108_LR_5_72_HBD_530_550_M_35_30_and_15_V14_4c79e9b9a7.pdf Deye has 2 MPPTs: 26A + 13A Longi under lab/STC conditions outputs: 13.92A and I will have 20 panels. Ideally, I want to create two strings one on each MPPT. Can I hookup 1 string of 10 panels to the MPPT with 13A limit? Couple of installers I spoke with said yes since STC current is ideal and never really happens in real world. OTOH, these panels are bifacial so i need to factor in 10-15% additional amps as well. I was looking at datasheets of other inverters and seems like unlike voltronic with 18A per string limit, most newer ones have much lower pv current limit eg 26A + 13A design. Please Advise?

Yes, I think since one of them is spinning slow now, the other two are making extra noise. When we installed this inverter 4 years ago, fans used to speed up/make noise around afternoon or when it was on battery power alone, rest of the time it was barely noticeable. Now fans make noise all the time.

So Infini 10KW doesn't drop down to 0% PWM?

UPDATE: Received official reply from Noctua, they are saying all their fans (except NF-A20) stop at 0% PWM. To avoid that we can get their https://noctua.at/en/na-fc1 controller, it has the option to prevent fan from stopping and maintains minimum 300 rpm.

That's my concern with these. Officially they claim 3000 cycles but official warranty is only 3 years in Pakistan as well. Makes you wonder if they'll even last 4-5 years? and if its worth going with pylontech - which comes with 7 year warranty.

Interesting the actual product image on Narada's main website looks like the one I shared: https://en.naradapower.com/solution/detail/id/10010.html

Thanks! What kind of warranty is being offered on Narada in your country? I'm in Pakistan, and the ones we're getting have noticeably different front-end, makes me wonder if we're getting some cheap chinese box with Narada printed on it.

How is the performance of Narada batteries compared to Pylontech? I like that these support 1C discharge current, but think most people don't buy these?

Can Sunsynk/Deye 12KW hybrid inverter work with 2x 5000UP Pylontech batteries without Pylontech's LV Hub? If yes, then what's the benefit of LV Hub?

Do you know what's the max RPM for infini inverters? Trying to figure out 30% min speed. Nocuta has two Industrial fans, one has top speed of 2000 (30dB) with min speed of 450RPM (@20% PWM), other has top speed of 3000 (43dB) with min speed of 750RPM (@20% PWM).

So I was looking at the original thread where the person replaced PIP inverter's fan with Noctua one and it would intermittently throw Fan Locked Error. Upon further investigation, I found an interesting "Feature" of some Noctua fans, including the one that the user bought: https://noctua.at/en/nf-r8-redux-1800-pwm Some models of Noctua fan have "Stops at 0% PWM" feature. Typically, most fans keep spinning at 0 PWM, however these Noctua fans are specially designed for people who want to build ultra-quiet PCs, so that when PC is not being used and motherboard sends out 0% PWM signal, the fan will stop spinning altogether, effectively be noiseless. I'm guessing a Fan stopping altogether is what causes the inverter to think that the fan has failed. Fortunately, most Noctua models don't have this feature, so using one of those should be fine. What do you think @Coulomb?

Update: Our of curiosity, I placed my hand above each fan and noticed that Left and Middle fans are blowing air normally, while the right one had very weak airflow. I guess that fan might be the one making the noise. Isn't Infini supposed to throw an error code if a fan isn't working at required rpm? or is it when a fan drops below certain rpm that it complains? Is there a way using some software to check which RPM each fan is spinning at?

Found this: https://solar.sreda.gov.bd/irsc/

Yea, 10° makes better sense as the panels will clean themselves better after rain as well. How do I calculate min row spacing to avoid shading during winter months?

I'm from Latitutde: 31.52 and houses here have flat roofs. So we have to mount panels on angled structures on rooftop and obviously have to add row spacing to avoid shading. According to pvwatts the optimum solar panel tilt angle for my location is 24 degrees. The problem is that for 24 degree tilt, we have to add a lot of interrow spacing, which wastes space on roof. With 24 deg tilt, max I can get 10KW panels on the roof. So I tried with 0 degree tilt(i.e. installing panels flat on our flat roof), and obviously there is loss of total power generated. But, because of no shading issue, I can easily fit 15KW panels on the roof, meaning the total output of system is still significantly higher. Assuming price no issue. What do you guys recommend, have fewer panels at optimum angle and waste space OR install flat or maybe very low angle like 10 deg and install more panels? Numbers: 10KW @ 24 deg = 14,554 kwh/yr 15KW @ 10 deg = 20,921 kwh/yr 15KW @ 0 deg = 19,678 kwh/yr

Did you end up installing bifacial panels vertically? It's really interesting and I'd love to know how it turned out