Currently have the quattro 10kva installed and running well except it is overkill most of the time and high standby power consumption.
have a multiplus II 3k in box to add to system.
would like to have the quattro off most of the time except when running large loads, and the multiplus as the "daily driver", especially in the winter.
how would you do this? here is what came to my mind:
option 1: manually turn off one inverter, transfer the AC output to the load center and then turn the other on. or turn both on, switch load, then turn the first off.
option 2: connect the outputs of the two inverters (seems like a bad idea). turn one inverter off, and the other on when the load approaches some percent output of the multiplus, using node red. run for x minutes before switching back. will cause an outage during each hand off.
Q: can either inverter handle AC voltage on its output when it is off or will this damage the output?
Option 3: connect the output of the multiplus to the ac 1 input of the quattro. Use quattro either in charge only to save power or in power assist mode when inverting.
Q: if the quattro is off or in charge only mode, will it pass power to either ac output or do the contactors open?
Q: can the charger be disabled (inverter only) when in power assist? (prevent charging loop)
Q: will this theoretically give an output of 13kva (or up to the specified ac output I limit of the quattro?)
diagram to edit: long link
I dont really like any of these options, hence the post. Hopefully I overlooked something obvious.
