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Identification: MD-AL-GI-00
Rev. 1.1 of 12/03/2021 - Application: GID
User’s Manual 1PH 1100TL-3300TL-V3
Rev. 1.1 12/03/2021
4.1.
Electrical connections
Figure 14 – Steps for connecting the cables
4.2.
Ground cable connections (PGND)
Connect the 1PH 1100TL-3300TL-V3 inverter to the ground electrode using ground protection cables
(PGND).
The inverter does not have a transformer, therefore the positive and negative
polarities of the photovoltaic string do NOT need to be grounded. Otherwise, the
inverter may fail. All non-current-carrying metal parts (such as the PV module
frame, PV rack, housing of the combiner box, and housing of the inverter) in the
PV power system must be connected to the ground.
Attention
Prerequisites:
Prepare the PGND cables to be connected (it is recommended to use outdoor power cables with a cross-
section of 4 mm
2
suitable for grounding). It is recommended to use yellow-green cables for better
identification.
Procedure:
Remove an adequate length of the external insulation layer using a wire stripper, as shown in Figure 15.
Note:
L2 is approximately 2- 3 mm longer than L1