Installation Guide for FibeAir IP-20S, FibeAir IP-20S Assured
Page 27 of 105
Ceragon Proprietary and Confidential
3.3
Power Source
When selecting a power source, the following must be considered:
DC power can be from -40 VDC to -60 VDC.
Recommended:
Availability of a UPS (Uninterrupted Power Source), battery
backup, and emergency power generator.
Whether or not the power source provides constant power (i.e., power is secured
on weekends or is shut off frequently and consistently).
The power supply must have grounding points on the AC and DC sides.
Caution!
The user power supply GND must be connected to the positive
pole in the IP-20S power supply.
Any other connection may cause damage to the system!
Note!
For the warranty to be honored, you must install the IP-20S in
accordance with the instructions above.
3.4
Surge Protection
IP-20S includes built-in surge protection for its Ethernet and power interfaces. IP-
20S
’s surge protection
implementation complies with surge immunity standard
IEC 61000-4-5, level 4, provided the Ethernet cables were prepared according to
the instructions in
Preparing the Ethernet Cable and Plug-in Field
on page 49.
In areas in which severe lighting conditions are likely to occur, it is strongly
recommended to add additional protection by placing lightning protectors on all
electrical Ethernet cables, near the connection points with the IP-20S unit.
