(1) AC-input
(2) Grounding screw
(3) Power transformer
(4) PE wire
(5) AC-input (with 3-wire cable)
(6) Ethernet switch
Figure 3-20
Grounding through the AC PE wire
For a DC-powered switch, if none of the first two conditions is available, ground it through the return wire (RTN) of the
DC power supply. In this case, make sure this RTN wire is well connected to the ground at the DC output of the DC power
cabinet.
(1) AC/DC power cabinet
(2) –48V strip
(3) –48V
(4) RTN strip
(5) RTN
(6) PGND strip
(7) Grounding
(8) Ground wire
(9) Grounding screw
(10) Ethernet switch
(11) DC-input
Figure 3-21
Grounding through the PGND of a power cabinet
3.2.4 Multi-power Input
Caution:
A3600-EI Series Ethernet Switches have both AC and DC power inputs, so ensure that all the power connections are
disconnected before you turn off the power.
3.3 Connecting Optical Fiber
Caution: