Fujitsu 5GRUDB3 - DC Power and Ground Ports

Other IP65 is supported for the function of waterproong with ed 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
e 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 gure.
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
P
ower Supply Cable
RRH - Remote Radio Head
SPD - Surge Protected Device
FG - Frame Ground
SG - Signal Ground
PE - Protected Earth
FNC001632_Rev_01
Figure 6
DC Power and Frame Ground Connection
Physical interface 10-752508-Z2P or the compatible connector of Amphe-BTS series is used.
e 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  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 waterproong with connected cable.
No guarantee for waterproof when cable is loose contact or not connected.
e RU to be shipped with a protective dust cap on the DC Power connector to protect
against dust and other small particles. e water ingress protection is not required for these
caps.
e 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