16 Installation Guide DLX series L00410622-01
Figure 2.4.6: Stringbox with DC switch
P1, P2, P3:
Ungrounded terminals
N1, N2, N3:
Grounded terminals
N4: Grounded terminal
N5: Terminal for the grounding strap
P4: Ungrounded terminal
DS: DC Switch
Negative Grounded PV String
Figure 2.4.7: Negative grounded PV string
• The inverter is delivered from the factory
in an ungrounded PV string
configuration as standard.
• Connect the grounding strap between
N5 in the Stringbox (fig. 2.4.6) and the DC
ground receptacle labelled GND/PE in the
inverter lower compartment.