Installer has 4 identical off grid installs: Multi-II 48/5000, ccgx, Delta 5kv AC coupled with ET112 meter, 3 x Lithium PPE batts, no DC charging. (pre-built boards, all cable lengths etc identical) Two sites performing well, but two sites have similar issue around frequency shifting: Charging exceeds Abs v setting by 2v potentially causing damage to batteries, and the Delta ramps off (trips) hard rather than reducing and staying on to feed AC loads. (therefore batts not getting required 4hrs Abs time) (Freq settings in the assistant : 50.2hz, 52.7hz, 53 hz)
All firmwares have been checked and updated with latest, configs checked,
Keen to hear thoughts