H3C SR6608/6604 Routers Installation Manual
Chapter 5 Installing the Router
5-10
(1) Hex nut
(2) PGND cable
(3) Naked part of the PGND cable
(4) Grounding post
(5) Grounding bar
Figure 5-11
Connect the PGND cable to the grounding bar
Note:
z
The resistance between the router chassis and the ground must be less than 5
ohms.
z
Use the PGND cable provided with the router to connect the ground bar in the
equipment room. Otherwise, the router may not be effectively grounded, which
easily causes damage to the router.
5.6 Installing a Port Lightning Arrester (Optional)
Note:
z
Only 10/100 Mbps RJ-45 Ethernet interfaces need to be equipped with port lightning
arresters.
z
No port lightning arrester is shipped with the router. You can purchase one if
needed.
Before connecting an outdoor Ethernet cable to an Ethernet interface, you can install a
port lightning arrester to protect the router against lightning strokes.
The following port lightning arrester can be installed on the device. The specifications
for the port lightning arrester are as follows:
Port protective unit-single port, maximum discharge current (8/20
μ
s waveform): 5 kA,
output voltage (10/700
μ
s waveform): core-core < 40 V, core-ground < 600 V.