Grounding Of Transmission Equipment; Grounding Of Overhead E1/T1 And Hdsl Cables; Grounding Of Bts Surge Protector - Huawei Airbridge BTS3612A-1900 Technical Manual

Technical Manual
Airbridge BTS3612A CDMA Base Station
The grounding device of the AC lightning arrester is well connected to the mechanical
parts of the cabinet, and the contact resistance is less than 50mΩ.

6.3.4 Grounding of Transmission Equipment

Grounding bar is installed in the vicinity of the transmission equipment. The GND
cables from the transmission equipment are directly connected to the grounding bar.
The dual-color (yellow and green) plastic insulation copper-core conducting cables with
the cross-sectional area less than 6mm
the grounding cables.
The grounding bar of the transmission equipment is well connected to the mechanical
parts of the cabinet, and the contact resistance is less than 50mΩ.

6.3.5 Grounding of Overhead E1/T1 and HDSL Cables

Metal sheath grounding clamp for dedicated E1/T1 and HDSL overhead cables shall be
used for transmission lightning protection equipment.
Necessary grounding measures shall be taken before the metal sheaths of E1/T1 and
HDSL overhead cables are led into the Roxtec module.

6.3.6 Grounding of BTS Surge Protector

The grounding cables for the antenna & feeder lightning arrester are connected to the
nearest grounding bar, which is connected to the grounding system of the cabinet.
The grounding cables for E1 lightning arrester and HDSL lightning arrester are
grounded via the mechanical parts of the cabinet, and the length is less than 20cm.
Chapter 6 Lightning Protection and Grounding
2
and cable length less than 20cm are used for
6-5
System Principle