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Bernardf

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  1. You can have a look at this video: https://youtu.be/1q4dUt1yK0g. It goes over some of the basics of using a lead acid battery with an inverter for a simple power backup solution for a computer setup. It does not discuss solar panels though, but it might be useful for your project.
  2. Bernardf

    Kiran

    The settings on the Solarman app does not affect the inverter. It just affects how the app displays the info. You should set it to 'Storage System', otherwise the summary page won't show the battery part of the screen shot below.
  3. You can also try reducing your charging current setting on the inverter. If the batteries charge at a slower rate they will not heat up as much. I have 2x Dyness B3 3.6kWh batteries, which are quite similar to the Pylontech US3000. I reduced my charging current from 40A to 20A, and it makes a difference of about 2-3 degrees in the peak battery temperature. I also keep my garage door open for extra ventilation.
  4. I have the Sunsynk 5kW. It has 2 separate MPPTs, and you can have different orientations on them. I have 1.7 kWp (5 panels) on each MPPT, one array facing due NE and one NW. It has been working fine for me for the past 5 months.
  5. This is not 100% true. Depending on your type of meter, it might still trip it. The inverter attempts to stop the feedback, but in certain cases it is not fast enough, or the meter is too sensitive. This can happen when you have a big load that is being powered from solar, and the load suddenly switches off. For example if you're feeding in 3.5kW from your solar panels into your geyser (non essential / non-backed up circuit), and the geyser switches off, the inverter can't instantly stop PV production, it takes a couple of milliseconds. During this time a little bit of current will flow into t
  6. If you have a lot of inductive loads on the non-critical load side coming on at the same time it might have drawn too much current at one time. These would be items with motors like water pumps and fridges.
  7. Wow, that 'quick fix' by the previous owner could have gotten someone killed. I just thought I would share this (slightly) related story here. In 2013 I had a blown fuse in my Toyota Tazz, which I had bought new in 2003. This was the first time since it was bought that I had needed to open the fuse box. I then discovered that the fuse for the cabin fan had melted/merged into the surrounding plastic of the fuse box (but surprisingly this was not the one that had blown). Upon closer inspection I saw that it was a higher rated fuse than that which was supposed to have been fitted there. I
  8. These are the minimums that the inverter looks at in order for it to decide whether to use battery power or grid power to supplement available PV to power the loads (so during load shedding these minimums are not applicable as there is no grid power). In my example, from 09:00 to 12:00 the inverter will not use battery power if the actual SoC is less than 85%. So if actual SoC is 70% at 09:30, it will power loads with excess PV (whats left over from what the battery is pulling from PV to charge) + grid. If actual SoC is 90% at 11:00, it will use PV + battery, but it will stop dischargin
  9. Also make sure that 'Time of Use' is ticked, and underneath that all of the days are ticked.
  10. You can manage the minimum battery levels with the 'Time Of Use' settings under Grid Setup. I have included pictures of mine as an example. PV will be used first, and it will utilise the battery as long as the current state of charge is higher than the set minimum for that time of the day. When it hits the minimum it will use grid power. You can also use this screen to set charging from the grid (if you have a couple of cloudy days and solar is not enough to fully charge). Note that these percentages don't limit charging from PV (so even if it is set to 80%, it will attempt to charge the batt
  11. I think an 11kW heating system is probably intended for use in houses with 3 phase power connections.
  12. If you want something that does not need to be installed, and all your essentials are on one plug, you might want to look at one of those portable trolley inverter kits. This one from takelot is just an example, I don't have personal experience with it. It will run you under R15k for the inverter and 2 deep cycle batteries.
  13. Does anyone have some tips around the cleaning of solar panels for built up dust etc? Like how often to do it, what performance gains to expect etc? I was thinking of getting a long telescopic window washing pole to be able to clean them from a ladder, instead of climbing on the pitched roof, but they are quite expensive (R1,900) for 4m+ kits. Perhaps someone has found this type of equipment cheaper somewhere?
  14. On a more serious note, my easiest way to see loadshedding is the fact that the normally bright colourful lights on my Geyserwise control panel are dead. But it still requires me to go and check it, so I definitely want to look into some sort of buzzer system.
  15. I have a very reliable audible alarm: My neighbour's generator starting.
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