Installation and Operating Instructions V04 22
5.4.3 Grounding connection
If additional grounding or equipotential bonding is required locally, you can connect
additional grounding to the inverter. This prevents touch current if the grounding
conductor at the terminal forthe AC cable fails.
Procedure:
1.
Insert the grounding conductor into the suitable terminal lug and crimp the
contact.
2. Align the terminal lug with the grounding conductor and the ground washer on the
screw. The teeth of the ground washer must be facing the housing.
3. Tighten it firmly into the housing (screwdriver type: T25,torque: 2.5Nm).
Grounding parts information:
Object
Description
1
Housing
2
Ground washer
3
Terminal lug(M5) with protective conductor
4
M5 pan head screw
In case of operation on a Delta-IT Grid type, in order to ensure safety compliance
in accordance with IEC 62109, the following step should be taken:
The second protective earth/ground conductor, with a diameter of at least 10
mm
2
and be made from copper , should be connected to the designated earth
point on the inverter.
2 3 4
1
