Huawei MA5821 - Page 8

For better heat dissipation, avoid using the installation mode of placing the MDU vertically
(with the panel facing upwards) in the network cabinet.
Guide for grounding the network cabinet
1. MA5821/MA5822
2. MDF
3. ODF
4. Grounding bat
5. AC lightning protection
bar
6. AC power distribution
cabinet
 In the case of the TN-C-S and TN-S
AC power distribution systems, it is
recommended that you use the PE
wire of the AC power cable for the
MA5821/MA5822 grounding
connection. The prerequisite is that
the PE wire of the AC power cable
for the corridor of the building is
already grounded properly.
 Use the ground cable (the cross-
sectional area of the ground cable
>100 mm
The side
>100 mm
The GE electrical
port (above)
The optical port
(below)
CAUTION
5
6
1
4
PE
N
L
TN-S power distribution system
L
PGND
N
5
6
L
TN-C-S power distribution system
1
4
L
PE
N
PGND