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BEWARE that the product warranty will be void if a PV array with a short circuit current larger than 20 A array
is connected in reverse polarity.
The MPPT RS must keep the individual tracker inputs isolated from each other. That means one solar PV
array per input, do not attempt to connect the same array to multiple tracker inputs.
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.
3.4.1. MPPT RS 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 1. PV Array Example
Panel Type
Voc
Victron 260W
36.75 V
(60 cell)
Page 7
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Isolated SmartSolar MPPT RS
Vmpp
Isc
Impp
30 V
9.30 A
8.66 A
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# of panels
Max String Voltages
# 1 - 11
# 1 - 404 V
#2 - 8
# 2 - 304V
Power total per
string
2850 W
2080 W
Installation
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