Sofar 1.1KTL2-G3 - Connecting PGND Cables

SOFAR 1~4KTL2-G3 User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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4.2.Connecting PGND Cables
Connect the inverter to the grounding electrode using protection
ground (PGND) cables for grounding purpose.
The inverter is transformer-less, requires the positive pole
and negative pole of the PV array are NOT grounded.
Otherwise it will cause inverter failure. In the PV power
system, all non current carrying metal parts (such as: PV
module frame, PV rack, combiner box enclosure, inverter
enclosure) should be connected to earth.
Attentio
n
Prerequisites:
The PGND cables are prepared ( ≥4mm²outdoor power cables are
recommended for grounding purposes), the color of cable should
be yellow-green.
Procedure:
Step 1 Remove the insulation layer with an appropriate length
using a wire stripper, as shown in Figure 4-2.
Figure 4-2 Preparing a ground cable (1)
Note
：
L2 is 2 to 3mm longer than L1
Step 2 Insert the exposed core wires into the OT terminal and
crimp them by using a crimping tool, as shown in Figure 4-3.
Figure 4-3 Preparing a ground cable (2)