49
Electrical Connection
the impact of low temperature on the voltage of the photovoltaic panels, as
lower temperatures tend to result in higher voltages.
• PV module
»
The PV modules within the same MPPT channel are of the same brand.
Additionally, the strings within the same channel should have identical
quantities, and be aligned and tilted identically.
»
The positive or negative pole of the PV modules should not be grounded.
»
The positive cables of the PV modules must be connected with positive DC
connectors.
»
The negative cables of the PV modules must be connected with negative DC
connectors.
»
Multi PV module connection mode:
+
-
-
+
-
+
PV 1
PV 2
Inverter
Figure 8-15 Multi mode
Wiring procedures
Step 1: Strip off the insulation of the PV cables to an appropriate length.
4-6 mm
7 mm
+
-
Figure 8-16 Stripping the PV cable
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