10
MPPT INSTALLATION
3.4
Maximum Array Sizes
The following should be used as a guide to the maximum array size that can be connected to the
MPPT. The current limits to the specified level of the MPPT model so any array larger than these will
simply waste power:
Table 3.2: Maximum Photovoltaic Array Sizes in Watts
Battery Set
20 Amp MPPT 40 Amp MPPT
60 Amp MPPT 100 Amp MPPT
12V
250W
500W
750W
1300W
24V
500W
1000W
1500W
2500W
36V
750W
1500W
2200W
3600W
48V
1000W
2000W
3000W
5000W
3.5
Maximum Panel Voltage (Voc) Per Battery Bank
Table 3.3: Maximum Panel Voltage per battery bank
Battery Bank Size
PV Panel Voltage
(Voc)
12V
48V
24V
96V
36V
135V
48V
135V
Please remember that the Standard MPPT will
only support 150Voc per PV Panel String.
Systems should be designed for a max of
135Voc
150Voc is the absolute maximum. Systems should be designed for a max of 135Voc due to the
increase in panel voltage due to colder Panel Temperatures.
Refer to your solar module
documentation for the worst-case (coldest) module temperature voltage, should provide Voc vs.
temperature data.
