ITU Workshop on
“Tackling climate change and Specific Absorption
Rate (SAR) Measurement”
(Cotonou, Benin, 19 July 2012)
Standards for the protection of radio
installations
Ahmed ZEDDAM,
ITU-T SG5 Chair
France Telecom Orange
Cotonou, Benin, 19 July 2012
Outline
 Overview

Classification of SG5 publications
 Series

of ITU-T/SG5 Publications
K Recommendations
Handbooks

Lightning Handbook

Earthing and Bonding Handbook
 Standards
for the protection of radio
installations
Cotonou, Benin, 19 July 2012
2
ITU-T/SG5: Reference document
“Guide to the use of ITU-T Publications produced by
Study Group 5 aimed at achieving
Electromagnetic Compatibility and Safety”
(Supplement to the K-series Recommendations)
o Guide
o List of the Titles of K-series Recommendations
o Terminology
3
Cotonou, Benin, 19 July 2012
Relationships
between the ITU-T documents
ITU-R
ITU-T
ITU-D
SG 5
Recommendations
Other publications
Handbooks
Directives
4
Cotonou, Benin, 19 July 2012
Classification of SG 5 Publications
Considered equipment and installations
Equipment and installations located in telecommunications
centres, at radio installations or at outdoor locations
Telecommunication lines at outdoor locations
Equipment located in Customer Premises
Handbooks & Guides:
Lightning Handbook
Earthing & Bonding Handbook
Measuring Handbook
 Mitigation Handbook
 Directives
 Resistibility Guide
5
Cotonou, Benin, 19 July 2012
Classification of SG 5 Publications
 Series K Recommendations:
“Protection against interference”
List: from K.1 (11/1988) to K.94 (05/2012)
Some of them deleted after its content became
technically out of date
Access:
K.6 to K. 26 in Blue Book (1989)
Individual issues: paper or electronic CD versions
Free access to List of Recommendations:
http://www.itu.int/publibase/itu-t/ItutAllBySeries.asp?serie=K
6
Cotonou, Benin, 19 July 2012
Lightning Handbook: “The protection of
telecommunication lines and equipment against
lightning discharges”
Composed of three volumes
The Chapters 6 to 8
protective practices for specific parts of
telecommunication networks
(overhead lines, underground cables, switching and
subscriber equipment, radio installations);
protective practice for personnel;
estimation of frequency of breakdowns for
various types of installations
(telecommunication towers, buried cables, overhead
lines).
7
Cotonou, Benin, 19 July 2012
Earthing and Bonding Handbook
Earthing and Bonding of Telecommunication
Installation
Main purpose of earthing in telecom installation;
Requirements for service and protection earthing;
Earthing / bonding configurations,
(star, mesh. mixed star-mesh);
Characteristics / configurations of earth electrodes
(trench, earth spikes, plates)
Measuring the soil resistivity and earth electrode
resistance;
Maintenance of earthing installations.
8
Cotonou, Benin, 19 July 2012
Recommendation ITU-T K.56 :
Protection of radio base stations against
lightning discharges
Presents the techniques applied to a telecom. radio base
station in order to protect it against lightning discharges
The need of protection is obtained from the methodology
contained in IEC 62305-2, which is used to determine the
relevant lightning protection level (LPL) for the installation
The protection techniques for the external area cover the
lightning protection system (LPS), bonding procedures,
earthing and the installation of surge protective devices
(SPDs) at the power meter station
The protection techniques for the equipment building cover
the feeder and lighting cables, the electric power conductors,
the telecommunication cabling and the earthing/bonding
procedures applied to cable trays and equipment frames
Cotonou, Benin, 19 July 2012
9
Other useful Standards
Recommendation ITU-T K.27 “Bonding
configurations and earthing inside a telecommunication
building”
Recommendation ITU-T K.35 “Bonding
configurations and earthing at remote electronic sites”
IEC 62305-1 “Protection against lightning – Part 1:
General principles.
IEC 62305-2 “Protection against lightning – Part 2:
Risk management”
IEC 62305-3 “Protection against lightning – Part 3:
Physical damage to structures and life hazard”
IEC 62305-4 “Protection against lightning – Part 4:
Electrical and electronic systems within structures”
Cotonou, Benin, 19 July 2012
10
Thank you
Cotonou, Benin, 19 July 2012
11