July 30, 20196 yr 11 hours ago, andrew01 said: Any progress with this issue? As far as I know, there is no progress from Voltronic Power. I've not had much time to look at this, but it seems to me it's not my job to fix every problem with Voltronic Power firmware. Surely this must be harming sales by now. Why would you buy an Axpert when you know it's not going to work properly?
August 28, 20196 yr Good Morning Just some feedback. After a lengthy struggle, my previous Huawei batteries was replaced by the Installer. They were replaced by Narada 100ah 48v 4.8Kw Lithium Ion. (3 in parallel) I was informed by the supplier and installer that my PV dip and PV freeze will not happen with these batteries. It has only been two days but I can report the following: I have not experienced a single PV dip during the last two days. Even when using the a 2200W Iron the PV supply stays constant. Doesn't matter what load I introduce (3800W max total) the PV supply does not dip and stays constant. This is obviously a massive benefit in terms of PV supply during the day. Efficiency has increased dramatically. It is to early to comment on the PV freeze but will definitely provide feedback. I hope my excitement is not short lived but the initial results are really promising. Greetings Albert
August 28, 20196 yr Author Thanks for the feedback Albert. Glad you are making headway. Would be very keen to hear how your system is doing in a few more days. Thanks Peter
August 28, 20196 yr 13 hours ago, DaveSA said: @SnoopySniper Hi Albert, could you please share your Bulk and Float Voltage settings. Many thanks Hi These were the settings received from the supplier. Basically 51.5 and 51.6. Forget about the SOC on the inverter/watchpower With those settings the physical charge status lights on the batteries shows full After day 3 and still no PV dips. By 1330 my batteries are fully charged ready to work throughout the night. So far very happy.
August 29, 20196 yr 8 hours ago, SnoopySniper said: Hi These were the settings received from the supplier. Basically 51.5 and 51.6. Forget about the SOC on the inverter/watchpower With those settings the physical charge status lights on the batteries shows full After day 3 and still no PV dips. By 1330 my batteries are fully charged ready to work throughout the night. So far very happy. strange I would have expected higher voltages and not such lows on the discharge. edit: in fact i am pretty certain the datasheet suggested a charge voltage of 54 Edited August 29, 20196 yr by Dex_
August 29, 20196 yr I also found this low but I spoke to the supplier and he explained that they have found these values work the best after extensive use in the field. I had it at 54V as per spec sheet but that did not work the inverter was not able to maintain the float charge, kept on charging at 20amp then sees 100% SOC would switch of and battery would take the load and start the discharge then the charge would kick in again at 20Amps and this would repeat itself in quick succession. The current settings work perfect. as the battery indication reaches full you can see the charge slowly drops of to eventually 1 or 2Amp to maintain the battery full level. Greetings Albert
August 29, 20196 yr 12 hours ago, SnoopySniper said: Hi These were the settings received from the supplier. Basically 51.5 and 51.6. Forget about the SOC on the inverter/watchpower With those settings the physical charge status lights on the batteries shows full After day 3 and still no PV dips. By 1330 my batteries are fully charged ready to work throughout the night. So far very happy. @Mars
August 29, 20196 yr Guys, i have a question, and theres a reason im asking it on this post.I also have the 5kw mecer branded axpert mkii s 5kw I installed recently, and I too have noticed what seems to be strange behavior compared to my previous older model... back to my question, if you cycle on the axpert through the menu appearing on your inverter lcd screen, how many "screens" do you get that shows PV input (measured in watts)? If you answer 2 screens, can you educate me on what the difference is between the 2 (knowing its a single mppt model)?
August 29, 20196 yr 1 hour ago, Renier82 said: If you answer 2 screens, can you educate me on what the difference is between the 2 I don't know the answer, and agree that it's very confusing. Per the fine manual, one is "MPPT charging power" and one is "charging power", and it seems to me that they could look the same (same icons showing on the LC Display). I suspected at one point that one may be total MPPT power, and one may be net power into the battery, but that seems less likely now. Usually, the ultimate reference is the firmware, but this model's firmware is one that I don't have to be able to read it. I do have one for the Axpert VM III which does the same sort of thing, but it's more difficult to read for technical reasons. Is the power shown the same if there is no AC charging? If so, the second screen tells you the same thing as the first in the case of no AC charging, or total charging if both are active, or just AC charging if only AC charging is active. You distinguish these by whether one, both, or the other of the "PV" and "AC" indicators is on (to the left of the left measurement).
August 30, 20196 yr Thanks for your response @Coulomb and @DaveSA, I figured as much, I just wanted to confirm that its not just me. A favor gents, if i may... Comparing axpert and ICC values, would you be so kind as to confirm which pv input value from axpert your ICC software "PV watts" makes use of, the 1st or the 2nd (as described by DaveSA)?
August 30, 20196 yr 1 hour ago, Renier82 said: Thanks for your response @Coulomb and @DaveSA, I figured as much, I just wanted to confirm that its not just me. A favor gents, if i may... Comparing axpert and ICC values, would you be so kind as to confirm which pv input value from axpert your ICC software "PV watts" makes use of, the 1st or the 2nd (as described by DaveSA)? Please ignore, my apologies, i thought my problem could exist on other systems and would make monitoring of this issue inaccurate
September 4, 20196 yr On 2019/08/28 at 8:42 AM, SnoopySniper said: Good Morning Just some feedback. After a lengthy struggle, my previous Huawei batteries was replaced by the Installer. They were replaced by Narada 100ah 48v 4.8Kw Lithium Ion. (3 in parallel) I was informed by the supplier and installer that my PV dip and PV freeze will not happen with these batteries. It has only been two days but I can report the following: I have not experienced a single PV dip during the last two days. Even when using the a 2200W Iron the PV supply stays constant. Doesn't matter what load I introduce (3800W max total) the PV supply does not dip and stays constant. This is obviously a massive benefit in terms of PV supply during the day. Efficiency has increased dramatically. It is to early to comment on the PV freeze but will definitely provide feedback. I hope my excitement is not short lived but the initial results are really promising. Greetings Albert Good Day Well this will be my last input wrt the matter unless something change Its been one week now with thew new Batteries. To date I have not experienced one PV dip or Freeze. This was with various loads being introduced from 200 Watt to 3500 Watt. Because of the constant PV supply all 3 batteries are now fully charged by 2 in the afternoons. It might be premature but the constant PV dips and Freezes has not occurred since the new batteries. All components stayed the same except the batteries. During all discussions the focus wrt PV Freeze and dips has mostly been towards the inverters. I wonder if the focus was wrong or if I was just lucky that this issue seems to be resolved. It should be a relatively easy test and would expect installers to trouble shoot this. Cheers Guys Have a great day
September 5, 20196 yr @PeterDawson, I note that you are also running a Huawei battery. It would be really interesting if you could somehow try a different battery, especially if it was a Nerada.
September 5, 20196 yr Unfortunately I don't have the option to test other batteries, but just so that everyone don't think it is a Huawei battery issue, I have two Pylontech US3000 batteries connected to my Axpert inverter (SOL-I-AX-5P) and I'm seeing the same PV drop issue.
September 5, 20196 yr For what it may be worth, I have a single 2.4kWh Narada battery connected to a SOL-I-AX-5P inverter. Initially, total pv-freeze disaster. I managed to tweak the inverter settings so that for the past month the pv panels remained connected and trust to achieve the delicate panel/inverter/battery relation soon – using only WatchPower data.
September 5, 20196 yr 13 minutes ago, Gerswan said: For what it may be worth, I have a single 2.4kWh Narada battery connected to a SOL-I-AX-5P inverter. Initially, total pv-freeze disaster. I managed to tweak the inverter settings so that for the past month the pv panels remained connected and trust to achieve the delicate panel/inverter/battery relation soon – using only WatchPower data. Hi Gerswan, can you maybe share your current settings with us, or is it the same as what SnoopySniper posted above.
September 5, 20196 yr The settings are summarized in Afrikaans . . . in stead of learning to speak French or Mandarin, I’m trying to teach the system Arikaans! 00.pdf 01.pdf 02.pdf
September 5, 20196 yr 2 hours ago, Gerswan said: The settings are summarized in Afrikaans . . . in stead of learning to speak French or Mandarin, I’m trying to teach the system Arikaans! 00.pdf 49.48 kB · 2 downloads 01.pdf 28.74 kB · 2 downloads 02.pdf 18.69 kB · 2 downloads Wel ek hoop jy kom reg 😄 Dankie.
September 6, 20196 yr After reading all of this I feel I bought the wrong inverter (MECER AXPERT King 5K (SOL-I-AX-5K)) but now I need to make it work. So far I do not have batteries and panels so I think it would help me a lot if I could copy your system Albert. Are you willing to share what components you are using and what settings you use in the inverter? Thanks Martin
September 7, 20196 yr 19 hours ago, MJS said: After reading all of this I feel I bought the wrong inverter (MECER AXPERT King 5K (SOL-I-AX-5K)) but now I need to make it work. So far I do not have batteries and panels so I think it would help me a lot if I could copy your system Albert. Are you willing to share what components you are using and what settings you use in the inverter? Thanks Martin what do yo have and what are your needs/goals?
September 9, 20196 yr Well, I have nothing but the Mecer inverter. I need about 220KWh per month. I want batteries to cover the night and could install 12 PV panels. I am currently connected to Municipal electricity.
September 10, 20196 yr On 2019/09/09 at 10:37 AM, MJS said: Well, I have nothing but the Mecer inverter. I need about 220KWh per month. I want batteries to cover the night and could install 12 PV panels. I am currently connected to Municipal electricity. how that 220Kwh is distributed is what really makes the difference. Does this include your geyser? is your stove/oven gas?
September 10, 20196 yr On 2019/09/06 at 3:31 PM, MJS said: After reading all of this I feel I bought the wrong inverter (MECER AXPERT King 5K (SOL-I-AX-5K)) but now I need to make it work. So far I do not have batteries and panels so I think it would help me a lot if I could copy your system Albert. Are you willing to share what components you are using and what settings you use in the inverter? Thanks Martin Hi Sorry for the delayed reply. I have 15 x 330 watt panels. The are connected via 3 lines to the inverter. 3 in series on their own. The the remaining 12 on two lines with 6 panels per line. In parallel to keep the voltage the same as 3 in series. If that makes sense. I dont think the panels are super efficiently placed due to roof space. 12 north 3 east 3 west. I currently on a good day get max 3100watt from the pannels at about 11-1 o clock. I have a axert King Inverter (pretty much same performance as the one you have) I have 3 x Narada Lithium batteries.48 v 100ah each connected in parallel. Ive got a 400 square meter house. We are five occupants and i run everything of the system except the geyser and the oven. As you'll see in the previous post i only recently got the Narada batteries and the performance changed dramatically. The previous HUAWEI batteries causes constant PV dips And PV freezes. After about two weeks of monitoring it seems that with my setup i can easily get about 24 unit of electricity a day. The panels are more than sufficient to run the house during the day and the batteries easily take the house through the night. I do not have a BMS but looking at the indicators on the battery I’m guessing the batteries run down to about 30-40% capacity left before the charging starts in the morning again. Batteries a fully charged by about two o’clock. Hope the info helps Greetings Albert
September 10, 20196 yr I'm a bit late in chipping in here, but rather late than never. Regarding the Huawei ESM48100 - there are two versions around: the ESM48100A1 and the ESM48100B1. The ESM48100A1 has a very silly 50 A charge/discharge current limitation. If you exceed that, the battery will basically not put out any current or accept any current. It will reset itself a bit later. So basically - if you try to pull more than 2.4 kW from the battery, the battery will almost instantly drop the load. The ESM48100B1's charge/discharge current limit is 100 A.
September 10, 20196 yr 57 minutes ago, Tacet said: I'm a bit late in chipping in here, but rather late than never. Regarding the Huawei ESM48100 - there are two versions around: the ESM48100A1 and the ESM48100B1. The ESM48100A1 has a very silly 50 A charge/discharge current limitation. If you exceed that, the battery will basically not put out any current or accept any current. It will reset itself a bit later. So basically - if you try to pull more than 2.4 kW from the battery, the battery will almost instantly drop the load. The ESM48100B1's charge/discharge current limit is 100 A. You are correct with the 50 amp issue. what however happened with me the battery kept on supplying even at 70 amps. it did however cause the pv's to dip and sometimes to freeze. but then again even at 25 amp draw the pv's would freeze. Just dont think those batteries were made for household functions with constant load changes. cheers
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