11
Figure 11 Grounding the router through the PE wire of the AC power supply
Grounding the router through the RTN wire of a DC power
supply
CAUTION:
Make sure the RTN wire is correctly grounded from the DC egress of the DC power cabinet.
If the router is powered by a –48 V DC power supply and no grounding strip is available at the
installation site, you can ground the router through the return (RTN) wire of the DC power supply, as
shown in
Figure 12 Grounding the router through the RTN wire of the DC power supply
PGND busbar
RTN busbar
-48V busbar
DC power box
Ground
