Installation of the external protective grounding cable
In addition to the grounding protection previously connected to the AC
output connector, a second protective grounding cable has to be installed
to be connected to the metal frame of the inverter.
The cable to be used must be copper and have a minimum cross-section
not less than the phase cable and in any case not less than 4mm².
To install a second protective grounding cable, follow the procedure de-
scribed below:
• From among the components supplied, nd the M5x10 screw and the
two M5 knurled washers.
• Fit a proper cable lug on the protective grounding cable.
• Fasten the cable lug using the screw and the two washers, following the
sequence illustrated below and tightening to a torque of 4.1 Nm.
The connection point
19
is located on the underside of the inverter.
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