33
INSTALLATION AND CONNECTION
NOTE!
Do not use the neutral conductor for grounding purposes.
Figure 3.5 - Grounding connections for more than one inverter
GROUNDING BAR
INTERNAL TO THE PANEL
DANGER!
The inverter must be grounded to a protective earth for safety purposes (PE).
The earth or ground connection must comply with the local regulations.For
grounding, use cables with cross sections as indicated in Table 3.3.
Make the ground connection to a grounding bar or to the general grounding
point (resistance 10 < ohms). Do not share the ground wiring with other
equipment that operate with high currents (for instance: high voltage
motors, welding machines, etc). If several inverters are used together,
refer to Figure 3.5.
Figure 3.4 - Power / Grounding Connections
(b) Models 7.3-10-16A / 200-240V e 2.7-4.3-6.5-10-13-16A / 380-480V
Note: (*) In case of single-phase power supply with phase and neutral cable, connect only the phase cable to the
disconnecting switch.
PE
R
S
T
Power
Supply
PE
T
Q1
RS
TUVW
PE
Shielding
PE W V
U
-Ud BR
+Ud Braking
Resistor
(see item 8.17)
Disconnect (*)
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