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Identification: MD-AL-GI-00
Rev. 1.0 of 21/07/2021 - Application: GID
User’s Manual 1PH 3000TLM-6000TLM-V3
Rev. 1.0 21/07/2021
4.2.
Connecting PNGD cables (grounding)
Connect the 1PH 3000TLM-6000TLM-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 grounding cable (recommend greater than 4mm
2
yellow-green outdoor cable).
Procedure:
1)
Remove the insulation layer with an appropriate length using a wire stripper.
Note:
L2 is approximately 2-3 mm longer than L1.
Figure 9 – Preparing the ground cable (1)
2)
Insert the exposed wires in the OT terminal and crimp them using a crimping tool.
Note 1
: L3 is the length between the insulation layer of the ground cable and the crimped part. L4 is the
distance between the crimped part and the conductor wires protruding from the crimped part.
Note 2
: The cavity formed after the conductor has been crimped must completely wrap the conductor wires.
The core of the wire must be in close contact with the terminal.
