Connecting additional protective grounding
Qualified person
If additional protective grounding or equipotential bonding is required locally, you can connect additional protective grounding to the product. This prevents touch current if the grounding conductor at the terminal for the AC cable fails. The required M5x16 screw and washer assembly, the washer, and conical spring washer are included in the scope of delivery of the inverter.
Additionally required material:
1 ring terminal lug
Procedure:
- Disconnect the inverter from all voltage sources ( > Disconnecting the Inverter from Voltage Sources).
- Strip the grounding cable insulation.
- Insert the stripped part of the grounding cable into the ring terminal lug and crimp using a crimping tool.
- Insert the screw and washer assembly through the hole in the ring terminal lug and tighten the screw with a Torx screwdriver (TX25) (tightening torque: 2.5 Nm (22.2 in‑lb)) at the connection point for additional grounding.
Also see: