Version 20200601
No.
Parallel wiring
Figure 1: Electrical diagrams of series and parallel wiring.
The maximum number of Modules that can be connected in series within a string must be calculated in accordance with
applicable regulations in such a way that the specified maximum system voltage (The maximum system voltage of bifacial
module is DC 1500V) of the modules and all other electrical DC components will not be exceeded in open-circuit operation at the
lowest temperature expected at the PV system location.
Correction factor for the open-circuit voltage can be calculated based on the following formula: CVoc=[1-α(25-T)]%. T is the
lowest expected ambient temperature at the system location. α(%/°C) is the temperature coefficient of the selected module
Voc(Refer to corresponding datasheet).
Dimension
Maximum system voltage
Maximum number of modules
1658×992×6mm
1500V
35
1968×992×6mm
1500V
29
Note: The data above are calculated based on the temperature in Wuxi. The maximum number of modules that can be
connected in series within a string for the specific project must be calculated based on the actual local temperature.
If there is reverse current exceeding the maximum fuse current flowing through the module, use over- current protection
device with the same specifications to protect it.
Recommended installation method of full cell solar module:
The modules in PV array are recommended for portrait connecting, and cable length is not less
than 0.7 m.
Recommended installation method of half cell solar module:
The head and tail of the modules in PV array are placed in a cross layout, and cable length is not
less than 0.65 m.
12
10
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