MultiPlus-II 2x120V If a positive and a negative DC distribution point is used, the cross-section of the connection between the batteries and the DC distribution point must at least equal the sum of the required cross-sections of the connections between the distribution point and the inverter/charger units. Place the inverter/charger units close to each other, but allow at least 10cm for ventilation purposes under, above and beside the units. UTP cables must be connected directly from one unit to another (and to the remote panel). Connection or splitter boxes are not permitted. Always interconnect the negative battery cables before placing the UTP cables.
Only one remote control means (panel or switch) can be connected to the system. 4.5.8. Three-phase connection The inverter/charger can also be used in a 3-phase wye (Y) configuration. To this end, the devices are connected by means of standard RJ45 UTP cables (the same as for parallel operation). The system of inverter/chargers (and the optional Digital Multi Control panel) will require subsequent configuration (see the Configuration [16] chapter. For prerequisites, see the Parallel connection [14] chapter. The inverter/charger is unsuitable for a three-phase delta (Δ) configuration. The L2 outputs are disabled in a multi-phase setup.
Strings of paralleled units can be connected in three phases. Page 15 Installation