I have a brand new Multiplus II 48/10000 and would like to update the firmware and configure before my 4 PylonTech batteries arrive. I have searched for and read a few Q & As on the subject.
The Victron videos indicate that this is possible using either AC in or 48v DC. I wanted to minimise risk and use a low value MCB for setup, connect up my laptop and USB interface and away we go. There seem to be differing views on whether the AC in only option will work
I have only AC in connected (100A cables) and earth from my adjacent consumer unit.
I initially connected it to a 16A Type B MCB and the MCB tripped after a few seconds whether in position I or II
I have read that there is an initial rush of current to charge internal smoothing capacitors, so I get that.
I repeated using a 50A MCB (not unreasonable given that a 100A MCB is recommended to match the Multiplus's 100A throughput capability) and this time the MCB and RCD (80A 30mA) both tripped after about 15 seconds.
Is my only choice to wait for the batteries to arrive ?
Is there something else I should try ?
Does it make a difference if I start up in charging only (position II) of inverter (position I) ?
Alternatively does this suggest there is a problem with the inverter ?
How many volts of DC would it require to fire up the DC side as I have a number of smallish LiPo batteries of different sizes that I could use ? I also have a 12v lead acid accumulator ?
Any help would be appreciated