3com S7906E 빠른 설정 가이드
3-5
Figure 3-5 Ground an AC-powered Ethernet switch through the AC PE wire
AC power input
Ethernet Switch
Grounding screw
L
N
PE
Power transformer
(with a 3-core cable)
z
If there is no grounding strip and no grounding body can be buried, the DC-powered Ethernet
switch can be grounded through the return (RTN) wire of the DC power supply. In this case, make
sure the RTN wire has been well grounded from the DC egress of the DC power cabinet.
Figure 3-6 Ground a DC-powered Ethernet switch through the RTN wire of a power cabinet
DC power input
Ethernet Switch
RTN
- 48V
AC/DC
power box
- 48V strip
RTN strip
PGND strip
Ground
Grounding screw
Installing Switch Modules
For the procedure for installing cards, power modules, and fan tray, refer to Chapter 5 “Hardware
Maintenance”.