phidz

nice, here is mine

Link to Andy's channel please

Correct

Password is on the wifi dongle

agreed, will have to call back the installer to further split the db

😃 i think it's cheaper to put oven on the grid. In the long run, i will have to go your suggested route. I also increased the power field on system settings from the 5000w to 5500w, not sure if it had an effect.

I have just done the test on my inverter and it tripped when the AC load was at 7.26KW, Grid power was 2.23KW. As suspected the solarman app did not update quick enough to capture the correct load when the inverter tripped. Would a automatic transfer switch help with preventing the house from being temporarily out of power when the inverter trips?

ok thanks, i will test today and update this thread with my findings.

Does that mean that i should be able to pull about 7.7KW on the essentials side before it trips?

Just on essential loads.

it's tripping on my Sunsynk 5kw

So the inverter trips when grid is available. From the solarman app it shows that it trips when 5.5kw is drawn from the essentials side. I don't know how accurate that is, so i will test today checking the real time inverter readings.

I have found this to be true. Everytime i pull over 5.5kw from the essentials side, my inverter trips. However i am checking the solarman app to see the power values before the inverter tripped so they may not be very accurate. I will do a test and check on the inverter.

I would advise you to start a new thread with the installation details and system settings. You will get better help that way.

I do the same thing and I'm sure it increases the number of cycles. Whether its significant enough to drastically reduce the lifespan of the battery , i'm not sure. I have asked a similar question on this forum and the answer I got is that the BMS calculates the cycles based on the cumulative energy into and out of the battery, so if you discharge to 50% and charge back up to 100% it will be 0.5 cycles.

I wouldn't worry about loadshedding or a power outage during the day. Even on an overcast day i still get enough power for my essentials which is internet and work computers.

Do you draw from the grid after the battery is full? If yes I would use the battery more to save some money.

I'm not very familiar with exporting, someone who has done it before might be able to help. I would suggest starting a new thread with the appropriate title

Have a look at the this datasheet for the battery. I really wouldn't worry about the life span of the battery as long as i'm not discharging/charging it at high C rates.

I guess it depends with what you want to achieve. If you only discharge to 70% SOC your battery will last longer than discharging it to 25% like I do. However your return on investment will be longer because you may be using the grid more.

I'm glad you are now utilizing your battery. Your understanding of the power column is correct. If you exceed that value, it will pull the remainder from the grid. I don't know what will happen if grid is down though whether it trips or just gives off an alarm.

I have recently changed mine to this since I don't use underfloor heating at night. Battery will drain to 25% at around 5am. I'm not worried about loadshedding during the day because there will be solar to power the essentials.

The only 'problem' i see here is that the inverter will use the grid between 8am and 3pm as long as the batteries are not fully charged. I prefer supplementing solar with batteries during the day to ensure that i don't pull from the grid during the day.

SOC

I have a similar setup as yours. Same inverter (Sunsynk), same battery and similar PV size. I also had my system installed when there was a bit of loadshedding. I discharge the battery to 25% everyday, this way I'm getting a return on investment faster and also not abusing the battery. I average about 16kwh each day which is roughly R1000 saved every month.