Installation Manual
Quidway S5000 Series Ethernet Switches
Chapter 3 Installation
Huawei Technologies Proprietary
3-6
Power input
Ethernet Switch
Grounding wire
Grounding screw
Angle iron
Ground
Power input
Ethernet Switch
Grounding wire
Grounding screw
Angle iron
Ground
Power input
Ethernet Switch
Grounding wire
Grounding screw
Angle iron
Ground
Power input
Ethernet Switch
Grounding wire
Grounding screw
Angle iron
Ground
Figure 3-6
Grounding when burying grounding body nearby in an equipment room
z
If there is no grounding strip and no grounding body can be buried, the Ethernet
switch with AC power supply can be grounded through the PE wire of the AC
power supply. In this case, make sure the PE wire of the AC power supply has
been well grounded at the power distribution room or AC power supply
transformer side.
AC power input
(with triple cable)
Ethernet Switch
Grounding screw
L
N
PE
Power transformer
AC power input
(with triple cable)
Ethernet Switch
Grounding screw
L
N
PE
Power transformer
AC power input
(with triple cable)
Ethernet Switch
Grounding screw
L
N
PE
Power transformer
AC power input
(with triple cable)
Ethernet Switch
Grounding screw
L
N
PE
Power transformer
Figure 3-7
Grounding through AC PE wire
z
If there is no grounding strip and no grounding body can be buried, the Ethernet
switch powered by -48V DC can be grounded through the RTN wire of the DC
power supply. In this case, make sure RTN wire has been well grounded from the
DC egress of the DC power rack.