Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Small Powerwall in Germany
#41
Nice Smile Is this all connected to the DIYBMS?

Cells tested: 6.721 (overall cap.: 13.587 Ah, average cap.: 2.021 mAh)
Cells in production: 3.500 (overall cap.: 7.350 Ah, average cap.: 2.100 mAh)
Powerwall setup: 7s500p, 1.050 Ah, 27 kWh
Project page
Live solar/powerwall values
Daily graph
Reply
#42
(09-04-2020, 07:12 PM)IronSky Wrote: A solid-state relay that is in the minus line directly after the main fuse. It separates the complete battery from the charge controller and the inverters if a cell falls below 2.00 volts. It can switch up to 120 A at a maximum of 72 volts DC.

Have you used this yet? There's no heat sink attached to that SSR. DOesn't that SSR heat up? It will once you start running 100A through it.

Since this connection is typically shorted, why not just use a circuit breaker with a shunt trip?
Reply
#43
(09-08-2020, 09:24 AM)owitte Wrote: Nice Smile Is this all connected to the DIYBMS?
yes everything there is connected to. As soon as a certain value is reached, the relay switches.

Quote:Have you used this yet? There's no heat sink attached to that SSR. DOesn't that SSR heat up? It will once you start running 100A through it.
Yes it is in use. I only have a 1000 watt inverter on it and draw a maximum of about 20 to 25 A.

The SSR doesn't get warm, not even a bit, so no heat sink.

And sorry for the long wait for the answer. I was on vacation Smile
Reply
#44
[Image: 0Xsz937s.jpg] [Image: 0Xsz937l.jpg]

now with cooler
Reply


Forum Jump:


Users browsing this thread: 4 Guest(s)