Studer Innotec SI SERIES - Manual (Page 9)

STUDER INNOTEC SI
User manual SI V3.0 E 9
Option SI performance 3-phased
Three SI inverters can be connected together to
build a 3-phased grid. They have to be equipped
with the PE option.
Working
Two ways of working are possible with the SI
performance :
1) Working alone
One SI inverter can be used alone. The inverter
works then as a single one, like it is described in
this manual.
2) Working in a grid
Thanks to the connecting cable, three inverters
can be connected together in order to obtain a
3*400V 3-phased grid.
Connecting
1) Check that the inverters are in OFF position.
2) First link together the neutral of all 3 devices
by taking care that this connecting point be not
further than 1 m from each inverter.
3) Link together the battery cables (take care to
not reverse the polarity). The 3 inverters have to
be connected together to only one battery bank.
Commissioning
At the time of commissioning it is necessary to
operate all the 3 inverters. The inverters work
independently from each other and can be
loaded in an asymmetrical way. They can work
either in stand-by mode or in ON mode (see
working description in this manual.