Well.. I am glad I found this post.
I just got a new solar panel system installed (14.3Kw) with one PW2.
I was doing a proof of concept a couple of days ago to my neighbors. The PW2 was charged at 100%, the house was using about 1.3Kw, the panels were generating about 11Kw, 9.7Kw was sent back to the grid.
I shut down the main, and BOOM. All LEDs in the house start flickering (everything is LED). My USP backups start beeping, and the LEDs that were off can't be turned on. I had to turn all lights off obviously. But this is a disaster.
This is what I figured out in this scenario.
When the PW2 is fully charged, it will send 65.9Hz frequency to the house (and the inverters, so they can shut down).
The PW2 will discharge until it reaches 90%. At this point, the frequency goes down to 60Hz, everything works fine.
The inverters will restart, and the battery will charge again. But I have an issue here because I generate 11Kw, the battery can only take 5Kw intake, and my house is using 1.3Kw
Once the PW2 reaches 98%, we are going back into flickering mode.
So I plan to switch back my lights in the house to regular bulbs.
I wish Tesla explained this to me at the time. I'd never have sign up to have PW installed I think.
I just got a new solar panel system installed (14.3Kw) with one PW2.
I was doing a proof of concept a couple of days ago to my neighbors. The PW2 was charged at 100%, the house was using about 1.3Kw, the panels were generating about 11Kw, 9.7Kw was sent back to the grid.
I shut down the main, and BOOM. All LEDs in the house start flickering (everything is LED). My USP backups start beeping, and the LEDs that were off can't be turned on. I had to turn all lights off obviously. But this is a disaster.
This is what I figured out in this scenario.
When the PW2 is fully charged, it will send 65.9Hz frequency to the house (and the inverters, so they can shut down).
The PW2 will discharge until it reaches 90%. At this point, the frequency goes down to 60Hz, everything works fine.
The inverters will restart, and the battery will charge again. But I have an issue here because I generate 11Kw, the battery can only take 5Kw intake, and my house is using 1.3Kw
Once the PW2 reaches 98%, we are going back into flickering mode.
So I plan to switch back my lights in the house to regular bulbs.
I wish Tesla explained this to me at the time. I'd never have sign up to have PW installed I think.