4.4.5 Parallel Connection
Up to six identical units can be connected in parallel. When connecting MultiPlus-II units in parallel, the following requirements must be
met:
•
All units must be connected to the same battery
•
A maximum of six units connected in parallel.
•
Only identical devices may be connected in parallel.
•
The DC connection cables to the devices must be of equal length and cross-section.
•
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 MultiPlus-II units.
•
Place the MultiPlus-II units close to each other, but allow at least 10cm for ventilation purposes under, above and beside the units.
•
It is essential the negative battery terminal between the units is always connected. A fuse or circuit breaker is not allowed.
•
UTP cables must be connected directly from one unit to the other (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.
4.4.6 Three-phase operation
The MultiPlus-II can also be used in 3-phase wye (Y) configuration. To this end, a connection between the devices is made by means of
standard RJ45 UTP cables (the same as for parallel operation). The system (MultiPlus-II plus an optional control panel) will require
subsequently configuration (see Section 5).
Pre-requisites: see Section 4.4.5.
Note: the MultiPlus-II is not suitable for 3-phase delta (Δ) configuration.
1.
2.
When the AS4777.2 grid code has been selected in VEConfigure, only 2 units in parallel per phase are allowed in a three
phase system.
10