Connecting the external protective grounding
Qualified person
An additional grounding of the inverter is required to protect from touch current in case the grounding conductor fails at the terminal of the AC cable.
The inverter features a ground connection with two connection points for grounding (e.g., when using a grounding electrode).
The connection points have been labeled with the following symbol: 
The required screw and washer are pre-assembled on the inverter.
Procedure:
- Screw the grounding cable to the ground connection with washer and screw (M6x12, tightening torque: 4.5 Nm) using a screwdriver.
