Installation and Operation Manual
Page 77 of 156
[PVI-XXX.0-YY(-TL) - Rev:1.0]
11.3.
Connection of the protection earth cable (PE)
WARNING
For the safety of the PV plant the grounding
resistance of the plant itself, is determinant.
The latter must be established before the
first start up of the Plant (In Table 11-2 are
reported
the
minimal
sections
recommended to be used). It is care of the
installer in compliance with the IEC536-2, to
allign the dimensioning of the grounding
conductor alongside with the characteristics
of the inverter used and of the PV plant in
order to minimize the grounding resistance.
Perform the connection on behalf of the
grounding cable with lug (yellow/green) to
the screw (Figure 11-3 e Figure 11-4).
Tabella 11-1: Tabel of the minimum
recommended dimensions for the
grounding cables
Model
Section
Lug
PVI-55.0(-TL)
1 x 50 mmq
M 12
PVI-110.0(-TL)
1 x 70 mmq
M 12
PVI-165.0(-TL)
1 x 95 mmq
M 12
PVI-220.0(-TL)
1 x 120 mmq
M 12
PVI-275.0(-TL)
1 x 150 mmq
M 12
PVI-330.0(-TL)
1 x 185 mmq
M 12
Figure 11-3: Connection of the protection
Earth cable (PE) for ACBOX without
Transformer
Figure 11-4: Connection of the protection
Earth cable (PE) for ACBOX with
Transformer
For the models 275kW and 330kW,
connect
the
grounding
cable
supplied in the Acbox-Transformer,
directly between the grounding
copper bar of the rack and the space
of the Acbox-Transformer itself.
