Guru
Joined: 23/10/2015
Location: FrancePosts: 437
| Posted: 08:56pm 15 Feb 2021 |
Can you give me some model numbers of LF inverters so I can keep my eyes open.
Here are 2 PDF docs for SMA model SB's, but in general for a toroid when you pick it up it should be heavy, normally around 25kg to 35kg. A normal toroid type SMA SB's will normally push out up to 254 to 256vac. And Yes those SB's were nice made and worked well, but they are old tech so easy cheap to get hold of.
The other PDF is for the plug in Bluetooth control board you plug in, SMA bluetooth is bad so you do need a powerful bluetooth sender in your laptop like the 'SENA UD100' to then re-set the SMA SB internal settings for sequential shutting down. I just have a couple of boards and plug them in and reset and set, then i remove the board and off to another GTI.
I only have 5kW of PV going through a MIDNITE 200, and a MPPT TRISTAR DC charge controllers, but they are very expensive controllers but good for finish charging.
Most of the battery charging is with the AC coupling 14kW of PV feeding back from those GTI's running the 240vac circuits and back feeding through the 'OzInverter' to the batteries. Hence i reset the SMA SB's internal settings to just a few seconds on and off, and sequential GTI shut down voltages from 242vac 243, 244, 245, 246 and 247vac.
PLEASE NOTE, GTI's are best when they are smaller units, i no longer recommend anything over 2.5kW, why?, because when they are big they constantly cycle on off as they overfeed and push the AC voltage high.
Yes the 'Aerosharps' are reasonable quality according to 'Oztules'.
Good luck and enjoy your build.
SB-OffGrid-TI-en-41W.pdf
SBuseforSISIPVusage.pdf
SMABTPB-IEN112112.pdf