MyPower S4220 & S4320 Series Switch Installa
tion Manual V1.0
Maipu Confidential & Proprietary Information
Page 74 of 80
Force Time
Tensile Force (N)
Crush Force (N/100mm)
Short-term force
150
500
Long-term force
80
100
Installation Method of Fiber
After the fiber is drawn out from the optical interface, the fiber directly connected to the
photoelectric converter can be coiled to hang in the inner side of the chassis. The fiber
cascaded with other routers should slip over the PVC pipe to draw out, avoiding traction and
stretching.
Fiber itself does not belong to the conductor, and it does not sense or transduce the over-
voltage, but the strengthen core of the fiber optic cable (the armored component installed
to prevent the fiber from being affected by the environment event) can easily sense and
transduce the lightning overvoltage, so we should treat properly. It is recommended that
the user performs the ground protection at the user end of the fiber optic cable.
D.2.3
Equipotential Connection Requirement and Method
The interconnected routers in the same work range need the equ ipotential connection.
For example, the interconnected routers, the metal sheath of the cable, power supply PE
line, and the installed metal structure should ensure the equipotential connection.
For the equipotential connection of the interconnected routers, refer to figure D-1. After
connection, use the multimeter to measure whether each equipotential connection point well
contacts and the impedance is low enough.
A
P P ENDIX F IG URE
D- 1
D
IA GRA M O F RO UT ER EQ UIP O TE NTIA L CO N NE CTIO N
1. Router ground terminal
2. Router equipotential connection line
3. Ground protection cable
4. Ground bar
