Other
IP65 is supported for the function of waterproofing with fitted cap or connected cable.
No guarantee for waterproof when cap or cable is loose contact or not connected.
2.7.3
DC Power and Ground Ports
The RU has a 2-wire (–48V, Return) power connector for the power Input. An example of the RU power
connection and grounding is shown in the following figure.
6AWG
Ground Wire (FG)
SPD
RRH
PE
SG
Return
Shield (FG)
DC (-48V)
Return
DC (-48V)
Isolated DC/DC
To RRH Internal Circuit
NOTE: SG, PE, 6AWG Ground Wire, and Shield are connected to RRH Chassis.
DC Power
Supply
RRH Metal Chassis = FG
2-Wire
Power Supply Cable
RRH - Remote Radio Head
SPD - Surge Protected Device
FG - Frame Ground
SG - Signal Ground
PE - Protected Earth
FNC00163
2_R
ev_01
Figure 6
DC Power and Frame Ground Connection
Physical interface
10-752508-Z2P or the compatible connector of Amphe-BTS series is used.
The product number of external cable plug is 10-761296-Z2S for AWG shielded cable or
10-761297-Z2S for 7-5 AWG shielded cable.
Power cable length: 300 ft maximum. 6 AWG is required.
Electrical interface
−36.0 to −58.0 V DC input (Normal −48V)
Other
Lightning protection circuit on RU (Refer to
Resistability of Lightning
)
IP65 is supported with the function of waterproofing with connected cable.
No guarantee for waterproof when cable is loose contact or not connected.
The RU to be shipped with a protective dust cap on the DC Power connector to protect
against dust and other small particles. The water ingress protection is not required for these
caps.
The RU has two M6 bolts and nuts for lug ground connection.
RU Hardware Feature
External Interface
56
Release 1.0
·
Issue 1.1, May 2021
Fujitsu and Fujitsu Customer Use Only