Dc Power And Ground Ports - Fujitsu 5GRUDB3 User Manual

RU Hardware Feature
External Interface
Other
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.
DC Power
Supply
Shield (FG)
2-Wire
Power Supply Cable
RRH - Remote Radio Head
SPD - Surge Protected Device
FG - Frame Ground
SG - Signal Ground
PE - Protected Earth
Figure 6
DC Power and Frame Ground Connection
Physical interface
Electrical interface
Other
The RU has two M6 bolts and nuts for lug ground connection.
·
Issue 1.1, May 2021
Release 1.0
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.
RRH
DC (-48V)
SPD
Return
NOTE: SG, PE, 6AWG Ground Wire, and Shield are connected to RRH Chassis.
6AWG
Ground Wire (FG)
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.
−36.0 to −58.0 V DC input (Normal −48V)
Lightning protection circuit on RU (Refer to
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.
RRH Metal Chassis = FG
DC (-48V)
Isolated DC/DC
Return
PE
Resistability of
To RRH Internal Circuit
SG
Lightning)
Fujitsu and Fujitsu Customer Use Only
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