Inverters

https://www.sustainable.co.za/solis-4g-12-0kw-dual-mppt-3-phase-grid-tie-inverter.html Anyone heard of this before? Dual MPPT, is that for charging as well?

Sorry for being the powerforum rash the last few days. I'm learning, but clearly not fast enough. My question today is grid-tie vs hybrid. From my understanding, both pv modules and batterybank outputs DC. My understanding of the difference between hybrid and grid tie is: Grid-tie: it accepts power from PV and the grid, in most cases it pulls from PV, until such time the PV modules no longer supplies enough power and it then either balances it or pulls from the grid. Hybrid: It accepts power from PV, grid and battery bank, and additionally offers charging capabilities for your batteries. When it comes to delivering power it can be set on when to u…

Hi There, Has anyone used or heard of this inverter before? Can anyone comment on the specs? https://solaradvice.co.za/product/omnipower-plus-10kw-3ph-hybrid-pv-inverter/ EDIT argh .. its 3-phase nevermind

Good day, thank you for accepting me. i have a goodwe 5048 multi with the serial starting with 9, 20 ja320 poly’s in 2 strings, just installed my first.aircon to deal with the power 😁 problem is 2 days ago the sems portal stopped showing “usage” and now only displays solar production. It is connected to my WiFi and all components are communicating properly, I think😊 if I connect directly EzManage does show all the data. have they changed sems? I was very happy with the older version. thanks Justin

Hi Folks, I am new here and would love to get some expert advice. I have shortlisted two providers for a Solar Grid Tie solution but they both have different equipment that they use but the pricing is very similar. I am going to have 12 x 300kw panels with a 4 kw Lithium Ion battery. There are two options for the inverters : 1) Goodwe ES 4.6kW Hybrid Inverter (4.6KW Backup) 2) Victron EasySolar 5KVA - Could you provide me with your advise on which is the best option. In terms of batteries : 1)LiFEP04 2.4 KW Battery 2) Blue Nova 2.4 KW Battery …

As Coulomb mentioned, we have been working on a set of firmware patches to address the "kettle cut-off" or "premature source switching" problem. He also mentioned that we had a major setback when we bricked an inverter in the process. But as of today, I am testing the first working non-bricking development version (YF1_73.00e). Hoorah! But there are some aspects of it that I'd like to run past you gentlemen. First, we can't decide whether to call this feature KettleKomp™ or AussieBrew™? Second, we're not sure how well it is going to work on all the many and varied Axpert systems out there. The math challenged can skip the fine print below. We currently calc…

good morning gents, the settings & equipment: for my equipment specs please see signature. attached are the program settings of the axpert. the problem: my axpert switches to grid under certain circumstances when there is still abundant energy at hand in the pylons and from the pvs. notwithstanding program 12 being set at 48v, the axpert switches to grid/utility at 49.5v, i can not set program 12 lower than 48v without compromising the warranty on the batteries. when the pvs produce sufficient to carry a load of 500w and the sun is shining, giving a capacity of at least 2kw and the pylons are 100%soc all goes well. theoretically i should be able…

Good Day Everyone!, Currently im running offgrid with 2x Axpert inverters (10kW), 7,8kW PV and a 7.4kWh litium battery bank from SolarMD. I would like to know if it is possible to close a relay using the inverters when the following conditions are met: The sun is giving power to the panels (it is not an overcast day) The battery is charged (relatively) There is not too much draw on the system (if possible) I would like to start a pump when these conditions are (mostly) met. Can i use Program 38 (Dry contact Signal) to do this and how would i go about it? Would greatly appreciate any feedback. Baie dankie

Gidday, newbie here. Been fully off grid for about 2 months now, and with abundant sun, havent needed to use back up power yet. However, bought myself a good Honda gennie to cope with the cloudy days. Deliberately ran the batts down to 60% to test. The inverter will only accept 150W approx from the gennie. And switches back and forth, 2 seconds accepting charge, 10 second pause, rinse and repeat. Grid voltage showing as 254V dropping briefly to 240V when inverter accepts charge. Tried disconnecting the PV. No change. Played aroung with utilty charging current, 10A up to 40A. No change. BUT.....If I apply a load, (1KW heater), Gennie grunts down…

Hi. Which Victron inverter models can one consider to pair with 8kW PV panels? Do they offer grid tied or hybrid solutions?

We have problems to get the Solar-Log to pick up the Solar-Log Power Meter. I would appreciate pointers on how to get it to communicate

Dear All. Hope great. Need some help. What is the best solar configuration for the Axpert 5000. I am not very familiar with them, Thanks again Jay

Hi, I have read elsewhere on the forum that cerain Infinisolar inverters have internal fuses for the PV and battery connections. Where are these fuses located, and can they be easily replaced by a normal person (meaning not an Inverter specialist)?

the cycling loads of the washing machine, tumble drier and iron totally confuses my inverter. It is trying in vain to adjust fast enough to have an optimized PV yield. It is especially slow when it has to change from battery charging to discharging mode. Is this normal? Are the Goodwe inverters worse than the competition? Does the zero export setting contribute to this slow adjustment speed? Why is it difficult to build an inverter able to adjust much faster to changing load conditions?

Recently was asked to look at a faulty Victron multiplus 3Kva 48V inverter. The symptom was that on switching inverter switch on, when unit attempts to start inverter (with or without load attached) unit emits load buzz noise, then only the overload led comes on and there is no output. Problem turned out to be one of the two torroid transformers 220V winding was internally shorted. The torroids consist of a 220V winding and two presumably 48V windings which are simply run in paralell. Interestingly there are 2 x torroid transformers in the Victron units and each torroid has separate "H" bridge FET bank to drive the primary windings and the 220V secondary windings are…

A colleague has one of those red 3KVA hybrid inverters (Must iteration I suppose) similar to the image but without the Must branding. I do not know if anyone here has had experience with them. The setup of the 24V system: 6x265W Suntech modules 2x 2x 200Ah Vision batteries 3KVA 2400W Inverter He is currently off-grid and typical load 200-300W. During peak he runs a 1HP submersible pump for about 30min max. The batteries are not holding charge and I suspect they are not hitting absorption which is strange because we are in a clear sky good solar hours period. The panels are in 3 strings of 2x series. I’ve heard of these Musts not actually giving th…

Morning all. Please Help with the following. I would like to know what settings you guys think or know are best for the Trojan T105 RE Batteries. I have 2 sets of 8 in parallel giving you a total of 450 a/hr. There are three inverters connected in parallel. Attached are the specs of the battery. I have the following settings. 05 = User defined. 02 = the master inverter and one slave is at 20 amps charging and the third inverter is at 10 amps giving a total of 50 amps charging. this giving a total of 11.11% charging Best between (10 and 13%) 12 = 47 volts 13 = Full 16 = OSO 26 = 58.4Volts 27 = 54.0 Volts …

The system I am putting together is for a (mostly) off-grid campervan and consists of: - Axpert MKS 3KVA 48V Charger/Inverter - ~1kW of 60 cell PV in 2x2 strings - Pylontech US2000B Plus 2.4kWh 48V LiFePO4 battery. When mains 240VAC is connected to the Axpert AC input the system will be earthed via the supply earthing system. However when the van is in off-grid mode the tyres ensure there is no natural connection to earth. I've noticed that in the Axpert manual it only says: " GROUNDING INSTRUCTIONS -This inverter/charger should be connected to a permanent grounded wiring system. Be sure to comply with local requirements and regulation to…

Hi Blue Team, please could someone assist me. I'd like to set the Victron Multiplus 3KVA SOC value every hour (see Fig a below) My questions are Does one use the ESS "external control" to be able to this Is the best resource/link to start with https://www.victronenergy.com/live/open_source:start Fig a 100 x 90 x 80 x x 70 …

Hi, I am designing my PV project for my house and thought to ask for advise of what would be the best inverter for the set up. The array would be 3kw (possible future extension to 5-6Kw) and it will be connected to the Grid with limitations to Zero Export (regulations might change in the future with possibilities for Net metering and best case FIT). At the moment will no be using Batteries but I am open for a small capacity if the set up works properly. On a daily basis, the System will be powered first with PV, next Batteries should be able to cover any peaks of demand over the day discharging them 20% of the capacity, and latest should be the Grid (PV+20%Batt…

Hi. I´ve recently bought a VP 3000-24 whith a 25.5 V 200 Ah lithium battery. Solar panels are 5, 60 cells 265 w,, and the charger is a 50 A PWM. I could see dinamic response is very, very slow. Does anybody know if there is a firmware to change it? PWM is 300 Hz, but the Duty Cicle increases/decreases very slowly. That is a problem when de 18650 bank is charged to 28 Volts and a big load is disconected,

Hi Guys. Hope well, quick one, do these units comply with all the grid tie red tape? Sincerely Jay

I have taken an interest to understand the Axpert display parameters and what they actually mean. I took the display at about 09:40hrs. Select parameters as follows: Charging Current? (Is this a generation of the MPPT Charger based on the adjustment in proportion to the voltage drop to match battery voltage i.e panel voltage to battery voltage or just the straight panel optimal operating current under NOCT less losses? The lowest panel NOCT Imp is 6.71A giving us 26.84A before losses. However, looking at the IV Curve of the lowest panel in the configuration at 600W/sqm irradiance and voltage of about 29V 5.5A is possible). Battery bank voltage? (at sunrise …

Good day all, I've had a really crappy day so far. I went to buy some steel to make a security gate (instructions from SWAMBO). While inside someone broke into my Toyota Hilux and tried to steal it, broke the ignition, but thankfully I have an immobiliser. R1500 later, (call out to remove ignition and steering lock, then replace ignition) I'm back at the steel place to load my steel, get back home and start my project. Then one welding lead breaks clear off right inside the handle, no biggy, I get that fixed and continue to weld. 15 minutes later BOOM, the welder blows and also trips the mains. I open up the inverter and find this. …

Hi Guys I’m looking to start my own solar install. I’ve been browsing this forum on and off for the last 3 years (I think) trying to better understand some of the concepts and to think about how I would like to implement a setup for myself. When I first looked at this my daily usage was about 15KWh a day, with most of that in the evening, so due to low usage during daytime, it required me to have a battery setup which made the whole concept uneconomical for me, considering my monthly usage was only R500. I kept on checking back every now and again to see if things have changed but kept getting back to the same answer that financially it doesn’t make sense (…