Model
450/80
Battery capacity Lead-acid
200 Ah
Battery capacity Lithium
50 Ah
Recommended DC fuse
125 A - 150 A
Minimum cross section (mm2) per + and - connection terminal
0 - 2 m
35 mm
2
2 - 5 m
70 mm
2
Consult battery manufacture recommendations to ensure the batteries can take the total charge current of the
system. Decision on battery sizing should be made in consultation with your system designer.
Use a torque wrench with insulated box spanner in order to
avoid shorting the battery.
Maximum torque: 14 Nm
Avoid shorting the battery cables.
• Undo the two screws at the bottom of the enclosure and remove the service panel.
• Connect the battery cables.
• Tighten the nuts well for minimal contact resistance.
4.3. Solar array configuration
The Multi RS Solar contains seperate PV input connectors. However these are internally combined and connected to a single
Maximum Power Point Tracker. So it is recommended that the connected strings be made of the same number and type of
panels.
The maximum operational input current for each tracker is 18A.
MPPT PV inputs are protected against reverse polarity, to a maximum short circuit current of 20A for each tracker.
Connecting PV arrays with a higher short circuit current is possible, as long as connected with correct polarity. This outside of
specification potential allows for system designers to connect larger arrays, and can be useful in case a certain panel
configuration results in a short circuit current just slightly above 20A, or to oversize the array to take care of winter versus summer
PV yield.
While functional with correct installation, BEWARE that the product warranty will be void if a PV array with a
short circuit current larger than 20A array is connected in reverse polarity.
When the MPPT switches to float stage it reduces battery charge current by increasing the PV Power Point voltage.
The maximum open circuit voltage of the PV array must be less than 8 times the minimum battery voltage when at float.
For example, where a battery has a float voltage of 54.0 volts, the maximum open circuit voltage of the connected array cannot
exceed 432 volts.
Where the array voltage exceeds this parameter the system will give a "Over-charge Protection" error and shut down.
To correct this, either increase the battery float voltage, or reduce PV voltage by removing PV panels from the string to bring the
voltage back within specification.
4.3.1. Multi RS Solar Example PV Configuration
This is an example of an array configuration. The decision on the specific array configuration, sizing and
design for your system should be made in consultation with your system designer.
Table 2. PV Array Example
Panel Type
Voc
Vmpp
Isc
Impp
# of panels
Max String
Voltages
Power total
Victron 260W (60
cell)
36.75 V
30 V
9.30 A
8.66 A
#1 - 8
#2 - 8
304 V
4160 W
Multi RS Solar
Page 9
Installation
