Best part of 14000 Watt array on a 10kw inverter was this to maximise the annual yield because of the different roof aspects Mark. Appreciate your videos, always informative.
Yes the different aspects to the roofs will always limit the peak DC generation. That said the sig will allow for higher oversized DC power and make use of that into the batteries. It's a clever system which can function as both AC and DC/hybrid coupled batteries. The charge rate of the batteries in DC mode is set by the batteries themselves and grows as you scale the stack up. While the AC inverter is 10kW in and out. Really flexible setup and shouldn't see clipping on this one 💪
This was not a low cost install that is for sure. But wider work was carried out alongside the PV. Enphase would have made it more expensive that's for sure!
Nice job. I did one just like that but it was 10Kw TPN, on a domestic house. Way too many 5X16 SWAs. Tell us honestly, what was your typical Zs reading when off grid? Then i will tell you mine.
Current advice/guidance is offgrid Zs isn't really measurable due to how the inverters and instruments work. Calculation is advised using the manufacturers Ze rating (good luck getting that 🤣) then R1R2 of final circuits etc. I've measured it a few times and it varies massively. On my own home which is where I do the test regularly while tinkering it is often much lower than theoretically it should be. It's the fault current I'm most looking towards on that test and usually it's around 40A but again depends on the inverter.
Yes, it pays to allow plenty of time testing any existing installation before and after island mode. R1+R2, IR is over 100Mohms and all RCDs work in both modes. I feel like we are getting more responsibility than everyone else. Connecting a backup generator to the gateway is also an issue, because they are bonded at their star point.
@@electrician247 thanks Mark, I'm currently using the smart port to switch out the heat pumps and 22Kw EV charger, as these would deplete the batteries in 2 hours. I have found that people that live off grid remove the star point linkage on the geni to stop the feedback to to inverter. My only issue is that I did not financially allow for the two extra days it took to learn all this! Have a great Sunday night, very best, Tony
Great video mark. Loved every minute. Big thank you to you all for showing me the way. I really appreciate it. Hopefully I can pass it onto the next
Best part of 14000 Watt array on a 10kw inverter was this to maximise the annual yield because of the different roof aspects Mark. Appreciate your videos, always informative.
Yes the different aspects to the roofs will always limit the peak DC generation. That said the sig will allow for higher oversized DC power and make use of that into the batteries. It's a clever system which can function as both AC and DC/hybrid coupled batteries. The charge rate of the batteries in DC mode is set by the batteries themselves and grows as you scale the stack up. While the AC inverter is 10kW in and out.
Really flexible setup and shouldn't see clipping on this one 💪
@electrician247 thanks Mark, how's the commissioning on the sig kit?
Just getting 44 of these panels installed next week with Enphase micro-inverters. I hope the installers do as good a job. How much was this?
This was not a low cost install that is for sure. But wider work was carried out alongside the PV. Enphase would have made it more expensive that's for sure!
hi dady
Nice job. I did one just like that but it was 10Kw TPN, on a domestic house. Way too many 5X16 SWAs. Tell us honestly, what was your typical Zs reading when off grid? Then i will tell you mine.
Current advice/guidance is offgrid Zs isn't really measurable due to how the inverters and instruments work. Calculation is advised using the manufacturers Ze rating (good luck getting that 🤣) then R1R2 of final circuits etc.
I've measured it a few times and it varies massively. On my own home which is where I do the test regularly while tinkering it is often much lower than theoretically it should be.
It's the fault current I'm most looking towards on that test and usually it's around 40A but again depends on the inverter.
Yes, it pays to allow plenty of time testing any existing installation before and after island mode. R1+R2, IR is over 100Mohms and all RCDs work in both modes. I feel like we are getting more responsibility than everyone else.
Connecting a backup generator to the gateway is also an issue, because they are bonded at their star point.
@@tonywebb9909 The smart port in the SigEnergy gateway can help with additional generation
@@electrician247 thanks Mark, I'm currently using the smart port to switch out the heat pumps and 22Kw EV charger, as these would deplete the batteries in 2 hours. I have found that people that live off grid remove the star point linkage on the geni to stop the feedback to to inverter. My only issue is that I did not financially allow for the two extra days it took to learn all this! Have a great Sunday night, very best, Tony