Hi all,
I am having issues with charging my batteries with a 3300W generator during times when we aren't producing enough solar power. No bueno.
The setup:
- Victron Multiplus 48/5000/70 Inverter (Firmware: 430 VEBus: 2624430)
- Victron SmartSolar MPPT 250/100-Tr VE.Can Bluetooth Solar Controller (v1.61)
- Victron Venus GX
- 2x BYD-B-Box-Pro-13.8kWh LIFPO4 Batteries
- 1x 3300W petrol generator
- 20x panels on the roof (obv.)
Connecting a generator to the AC input of my multiplus results in a few minutes of bulk and then turns off the system. Meaning the power turns off for 30s, the multiplus turns off, resets and then comes back on. No errors or faults in any logs and the generator remains on at all times with no overload lights or warning on the genny.
My configuration in VEconfig is as follows:
General
Dynamic Load: On/Off no difference.
AC Current limit: 12A (matched with charger current limit)
Charger
Weak AC Input: On or Off makes no difference
Charge Current: Limited to 12A (genny is 12.5A max, have lowered as low as 11A same behavior)
Bat Type: LiFEPo4
Inverter
PowerAssist: Off (IF turned ON it turns into to a circular nightmare of switching back and forth between AC and Battery)
Hertz: 50 (wide Hertz set) When monitoring this I never see the generator outside of ±49.5 to 51.
I have read and tried most of what's described here: https://www.victronenergy.com/live/multiplus_faq
To prove that it does in fact work here are the VEconfig and VRM screenshots when it works but as I said it only works for a few minutes at a time, shuts the inverter down, restarts and then repeats the same process. After a few tries it typically just ends up in bypass mode and powers the site from the generator but doesn't bulk/charge the batteries.
I've read quite a few of the posts which mentioned that generators are somewhat of a hit and miss situation but this seems different.
Feels like I am missing something obvious (is this where the assistants come in???)
Cheers
Dan