Recom RCM SP-D Series User Manual page 21

5) Connect the AC connector to the inverter AC terminal, and the slight click represents the
connection is in the place. As shown in figure 4-17:
4.3.3 External ground connection
Danger
Attention
Ground terminal connection steps:
1) The external grounding terminal is located in the lower right side of the inverter.
2) Fix the grounding terminal to the PE wire with a proper tool and lock the grounding terminal
to the grounding hole in the lower right side of the inverter. As shown in Figure 4-18:
3) The cross-setional area of the external grounding cable is 4mm².
Figure 4-17 Connect the AC connector
Do not connect the N-wire as a protective ground wire to the inverter casing.
Otherwise, it may cause electric shock.
Good grounding is good for resisting surge voltage shock and improving EMI
performance. Inverters must be well-grounded.
For a system with only one inverter, just ground the PE cable.
For a multi-inverter system, all inverters PE wire need to be connected to the
same grounding copper bar to ensure equipotential bonding.
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