Hi,
I have recently installed a 3 Phase on-grid ESS system using 3 x Quattro 10's with back-up 33KVA 3 phase diesel Gen set. The issue I am having is the system does not accept any current from the gen set despite the gen voltage being present on the AC input 2 terminals of the Quattro's, AC In 2 being programmed for Generator in the GX (AC Input 1 is grid) and having the grid voltage, AC In 1 turned off.
I switched the 3 Quattro's to charger only with gen on and grid off, no luck there.
I tried most things suggested previously on the community also with no luck.
Whilst onsite, I did change the grid code from AS4777 to "Other Not compliant to any grid code standard", I suspected the strict grid settings for AC Input 1 (grid) might also be active for AC Input 2 (gen set) and the charging started, at least for a couple of minutes before it disconnected (grid still disconnected)
I checked the NS protection Log after it stopped charging and there was an error there referencing "ROCOF". I then took particular notice of the gen-sets frequency and it seemed to change quite quickly from 49.8Hz up to 50.4Hz.
Question, do AC input 1 and AC input 2 share the same grid settings when a country code is selected? To get my system to work correctly it would seem I need the grid compliant settings for AC Input 1 and more relaxed settings (or user configurable settings), especially frequency, for the generator on AC input 2.
