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User Manual for hybrid inverter HYD 10-20KTL-3PH - Rev. 1.0 of 25/08/2020
Identification: MD-AL-GI-00
Identification: MD-AL-GI-00
Rev. 4.0 of 31.01.18 - Application: GID
AC
L1
Multi-core copper
cable for outdoor use
Conductor with cross-
section:
10mm
2
～
16mm
2
L2
L3
N
PE
Table 6 - Cable specifications
4.1.
Connection of protective ground cables (PGND)
Connect the inverter to the grounding electrode using protective ground cables (PGND).
The inverter is transformerless, the positive and negative poles of the PV array
must NOT be grounded; otherwise, the inverter will fail.
All the metal parts in the photovoltaic supply system that do not carry current
must be grounded (e.g. PV module frame, PV bracket, dialler housing, inverter
housing).
Attention
The PGND cables are pre-set cables (external power supply cables ≥ 4mm
2
are recommended for
grounding purposes), the cable must be a yellow-green colour.
Procedure:
1.
Remove a suitable length of the insulating layer using a wire stripper,
NB:
L2 is 3mm longer
than L1.
Figure 11 - Removal of insulating layer
2.
Insert the exposed core wires into the OT terminal and crimp them using a crimping tool.
Figure 12 - Crimping of the exposed core
3.
Install the crimped OT terminal, insert the M5 screw and tighten the screw at a torque of 3Nm
