Hi,
I had my system installed 3 weeks ago, this morning I noticed that my battery didn't charge overnight and there is an alarm on the app showing code 26, 27 and 1.
Whole solar system is installed on separate consumer unit, the breaker ladled as PV was off, it tripped right after midnight ( i have a schedule to force charge the battery from 00:01)
This is 10.5kw Hybrid Inverter (the other PV barker is for a 3.6kw slave Inverter).
Rvolt stats on the inverter shows in similar range every day 237-248 range.
Any suggestions to why this tripped ?
The breaker appears to be rated ok based on your 10.5kW inverter, you wouldn’t normally expect that to trip - but - it will depend upon how that circuit has been wired, it is possible if that also feeds your main consumer unit that you might have exceed the 50A. - probably best for your installer to check that out.
When your batteries charge normally overnight what is the charging power ? (You should be able to see from the app graph what the charge kW is).
For now switch the breaker back on and if it closes ok without popping open then you should be ok until the battery charges again - it is possible to limit the battery charge power in the inverter settings which will keep you going whilst you wait for your installer to check it out, if if you can tell me that battery charge power i’ll guide you from there.
When your batteries charge normally overnight what is the charging power ? (You should be able to see from the app graph what the charge kW is).
For now switch the breaker back on and if it closes ok without popping open then you should be ok until the battery charges again - it is possible to limit the battery charge power in the inverter settings which will keep you going whilst you wait for your installer to check it out, if if you can tell me that battery charge power i’ll guide you from there.
Hey Dave,
I have attached the charge and discharge stats from from the event time when barker tripped.
I am also attached the spider web they left in my meter box....
I have attached the charge and discharge stats from from the event time when barker tripped.
I am also attached the spider web they left in my meter box....
Attachments:
Hmm, not much sensible I can say about that wiring....
It looks like your inverter must be coming off a single feed that also contains your 'serial inverter' and car charger. Is the serial inverter a solar only inverter and you have CT2 connected to it to monitor ?
It appears as if the CT clamp has been fitted in the main meter cupboard which would suggest that your inverter will see your EV charger as load and try and supply it from battery as well ?.
I can see from you scheduler settings that you are charging your batteries, then dumping them to grid, then charging again during the low tariff period - is that your intention ?
All of that said the battery charge power is 9.73kW and your grid consumption is 10.54kW and even taking the lowest grid voltage range it's still only 48A which should be well within that 50A breakers capability... the only slight doubt in my mind is that you are going from a Force Charge to Force Discharge which will see almost a 100A swing which might be catching the breaker out, you could try leaving a couple of minutes between charge and discharge schedules.
As I said you can reduce your maximum charge power in the Inverter Settings, to do that at the Inverter panel go into Settings, Battery, Max Chg Cur and enter a number in Amps for the DC charge current.
To work out the power you need to know your battery voltage, so for example if you have an EP11 it's a nominal 380V and so to reduce the charge power to 5kW, and you would choose 13.2A (DC amps = Charge Power [watts]/ Battery volts)
It looks like your inverter must be coming off a single feed that also contains your 'serial inverter' and car charger. Is the serial inverter a solar only inverter and you have CT2 connected to it to monitor ?
It appears as if the CT clamp has been fitted in the main meter cupboard which would suggest that your inverter will see your EV charger as load and try and supply it from battery as well ?.
I can see from you scheduler settings that you are charging your batteries, then dumping them to grid, then charging again during the low tariff period - is that your intention ?
All of that said the battery charge power is 9.73kW and your grid consumption is 10.54kW and even taking the lowest grid voltage range it's still only 48A which should be well within that 50A breakers capability... the only slight doubt in my mind is that you are going from a Force Charge to Force Discharge which will see almost a 100A swing which might be catching the breaker out, you could try leaving a couple of minutes between charge and discharge schedules.
As I said you can reduce your maximum charge power in the Inverter Settings, to do that at the Inverter panel go into Settings, Battery, Max Chg Cur and enter a number in Amps for the DC charge current.
To work out the power you need to know your battery voltage, so for example if you have an EP11 it's a nominal 380V and so to reduce the charge power to 5kW, and you would choose 13.2A (DC amps = Charge Power [watts]/ Battery volts)
From what I have gathered so far they are running separate cable for each solar inverter and EV so 3 additional AC cables from the meter box, they did cat5 cable as well so the EV can read data or something ? and it tells me the power production on the EV charger display.
Yes it is my intention to charge and discharge overnight.
It looks like the system went offline at 00:22 so that's 21 minutes since the force charger started. Will the swing from discharge to charge would trip the breaker with 21 min delay ?
I have a small inverter in the garage 3.6kw that runs 8 panels and only sends the energy to the system.
I know the wiring doesn't look impressive but i doubt I will be able to get it changed just for the esthetics, unless I can prove that is not installed in accordance to regulations which I am not so familiar with myself.
I will try to reduce the charging power and see how it goes.
Yes it is my intention to charge and discharge overnight.
It looks like the system went offline at 00:22 so that's 21 minutes since the force charger started. Will the swing from discharge to charge would trip the breaker with 21 min delay ?
I have a small inverter in the garage 3.6kw that runs 8 panels and only sends the energy to the system.
I know the wiring doesn't look impressive but i doubt I will be able to get it changed just for the esthetics, unless I can prove that is not installed in accordance to regulations which I am not so familiar with myself.
I will try to reduce the charging power and see how it goes.
If it was 20 mins into the Force Charge it won’t be the c/o from charge to discharge - the breaker should be rated for it but it’s entirely possible it may be tripping early.
I would keep a careful eye on it as the inverter can still output at 10.5kw which may also trip it if the output was maintained for 20 mins. But in the long run probably best to get it changed (for a 63A)
I would keep a careful eye on it as the inverter can still output at 10.5kw which may also trip it if the output was maintained for 20 mins. But in the long run probably best to get it changed (for a 63A)
Yh it is very random, it was running on the same schedule for like a week and it tripped first time, they only thing i noticed that grid load the time it tripped was 10.65kw, max load so far was always under 10.5
Thank you for looking into to this.
Thank you for looking into to this.