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Technical Manual
Airbridge BTS3612A CDMA Base Station
Chapter 6 Lightning Protection and Grounding
6.1 Overview
I. Lightning Protection
Lightning protection system for communication equipment includes external lightning
protection system and internal lightning protection system.
The external lightning protection system is to protect the equipment against direct
lightning stroke, including lightning receivers, lightning down-leading cables and
grounding devices.
The internal lightning protection system is to protect the equipment against indirect
stroke, such as thunder bolt induction, reverse lightning stroke, lightning wave intrusion
and other lightning strokes that might endanger human beings and the equipment.
II. Equipment Grounding
The purpose of equipment grounding is to provide the equipment with the capability of
protecting against external electromagnetism interference and to ensure the safety of
human beings and the equipment. The key of lightning protection is grounding,
because a fine grounding can provide the equipment with a low-resistance lightning
electricity discharging channel.
6.2 BTS Lightning Protection Principle
6.2.1 Principle and Characteristics
As an outdoor BTS, the BTS3612A adopts multiple internal and external lightning
protection measures.
I. Measures of external lightning protection
The BTS3612A adopts the equalized electric potential combining/grounding
technology specified by the IEC and the ITU-T. This design ensures that no grounding
electric potential difference is generated during lightning striking and thus no damage is
caused to the equipment.
Chapter 6 Lightning Protection and Grounding
6-1
System Principle
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