IEC 60728-11:2016 deals with the safety requirements applicable to fixed sited systems and equipment. As far as applicable, it is also valid for mobile and temporarily installed systems, for example, caravans. This fourth edition cancels and replaces the third edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – Correction of minimum cross-section of bonding conductor in Figure 6, Figure 14 and Figure 17. – Creation of new symbols for “overvoltage protective device – (OPD)” and for “coaxial overvoltage protective device – (COPD)”. – Introduction of new OPD symbol to 3.2, Figure 3 and Figure 6. – Introduction of new COPD symbol to 3.2 and Figure 19. – In 3.1 replacement of terms CATV, MATV and SMATV by new terms and definitions due to changes in technology and use of cable networks. – Extension for remote feeding voltage on subscriber feeder. – Adaption to Edition 2.0 of the IEC 62305 series. – Deletion of informative Annex C and normative reference to the simplified software for the calculation of risk due to lightning (Annex J of IEC 62305-2:2006.) – New subclause 10.2.6 Fully-isolated system outlet provided by means of a FTTH system. The contents of the corrigendum of July 2016 have been included in this copy.

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PDF Pages	PDF Title
2	National foreword
15	English CONTENTS
19	FOREWORD
21	INTRODUCTION
22	1 Scope 2 Normative references
23	3 Terms, definitions, symbols and abbreviations 3.1 Terms and definitions
30	3.2 Symbols 3.3 Abbreviations
31	4 Fundamental requirements 4.1 General
32	4.2 Mechanical requirements 4.3 Accessible parts 4.4 Laser radiation 5 Protection against environmental influences 6 Equipotential bonding and earthing 6.1 General requirements 6.2 Equipotential bonding mechanisms
34	Figures Figure 1 – Example of equipotential bonding and earthing of a metal enclosure inside a non-conductive cabinet for outdoor-use
35	Figure 2 – Example of equipotential bonding of a building installation
36	Figure 3 – Example of equipotential bonding and indirect earthing of a metal enclosure inside a non-conductive cabinet for outdoor-use
38	Figure 4 – Example of equipotential bonding and earthing of a building installation (underground connection)
39	Figure 5 – Example of equipotential bonding and earthing of a building installation (above ground connection)
40	Figure 6 – Example of equipotential bonding with a galvanic isolated cable entering a building (underground connection)
42	Figure 7 – Example of maintaining equipotential bonding whilst a unit is removed
43	6.3 Equipotential bonding in meshed systems 6.3.1 References to other standards 6.3.2 General on AC mains 6.3.3 AC power distribution and connection of the protective conductor 6.3.4 Dangers and malfunction
44	6.3.5 Measures 7 Mains-supplied equipment
45	8 Remote power feeding in cable networks 8.1 Remote power feeding 8.1.1 Maximum allowed voltages 8.1.2 General requirements for equipment 8.1.3 Current-carrying capacity and dielectric strength of the components
46	8.2 Remote powering from subscriber premises 9 Protection against contact and proximity to electric power distribution systems 9.1 General 9.2 Overhead lines 9.2.1 Overhead lines up to 1 000 V Tables Table 1 – Maximum allowed operation voltages and maximum recommendedcurrents for coaxial cables in the EN 50117 series
47	9.2.2 Overhead lines above 1 000 V 9.3 House installations up to 1 000 V 10 System outlets and transfer points 10.1 General
48	10.2 System outlet 10.2.1 Types of system outlets 10.2.2 Fully isolated system outlet 10.2.3 Semi-isolated system outlet 10.2.4 Non-isolated system outlet with protective element
49	10.2.5 Non-isolated system outlet without protective element 10.2.6 Fully-isolated system outlet provided by means of a FTTH system 10.3 Transfer point Figure 8 − MDU building installed with FTTH technology
50	11 Protection against atmospheric overvoltages and elimination of potential differences 11.1 General
51	11.2 Protection of the antenna system 11.2.1 Selection of appropriate methods for protection of antenna systems Figure 9 – Areas of antenna-mounting in or on buildings, where earthing is not mandatory
52	11.2.2 Building equipped with a lightning protection system (LPS) Table 2 – Solutions for protection of antenna systems against atmospheric overvoltages
54	Figure 10 – Flow chart for selection of the appropriate method for protecting the antenna system against atmospheric overvoltages
56	Figure 11 – Example of equipotential bonded headends and antennas in a protected volume of the building LPS
57	Figure 12 – Example of equipotential bonded headends and antennas in a protected volume of the building LPS
58	Figure 13 – Example of equipotential bonded headends and antennas in a protected volume of an external isolated ATS
59	Figure 14 – Example of equipotential bonded antennas (not installed in a protected volume) and headend with direct connection to building LPS
60	11.2.3 Building not equipped with an LPS
62	Figure 15 – Example of equipotential bonded headend and earthed antennas (building without LPS)
63	Figure 16 – Example of bonding for antennas and headend (building without LPS and lightning risk lower than or equal to the tolerable risk)
64	11.3 Earthing and bonding of the antenna system 11.3.1 Internal protection system 11.3.2 Earthing conductors
66	Figure 17 – Example of protecting an antenna system (not installed in a protected volume) by additional bonding conductors (R > RT)
67	11.3.3 Earth termination system
69	11.4 Overvoltage protection Figure 18 – Examples of earthing mechanisms (minimum dimensions)
70	12 Mechanical stability 12.1 General requirements Figure 19 – Example of an overvoltage protective device for single dwelling unit
71	12.2 Bending moment Figure 20 – Example of bending moment of an antenna mast
72	12.3 Wind-pressure values 12.4 Mast construction 12.5 Data to be published
74	Annex A (informative) Earth loop impedance A.1 General A.2 Earthing for fault conditions
75	A.3 Earthing to protect against hazardous touch voltage Figure A.1 – Systematic of earth loop resistance
76	A.4 Temporary safety measures
77	Annex B (informative) Use of shield wires to protect installations with coaxial cables B.1 General B.2 Soil quality determines shield-wiring necessity B.3 Protective measures against direct lightning strikes on under ground cables Table B.1 – Conductivity of different types of soil
78	Figure B.1 – Principle of single shield wire Table B.2 – Protection factors (Kp) of protection measuresagainst direct lightning strokes for buried cables
79	Figure B.2 – Principle of two shield wires
80	Annex C (informative) Differences in some countries C.1 Subclause 6.1 C.1.1 France C.1.2 Japan C.2 Subclause 6.2 C.2.1 France C.2.2 Norway C.2.3 Japan and Poland C.3 Subclause 6.3 – Norway C.3.1 Justification
81	C.3.2 Equipotential bonding mechanism for cable networks Figure C.1 – IT power distribution system in Norway
82	Figure C.2 – Example of installations located farther than 20 m away from a transforming station
83	Figure C.3 – Example of installations located closer than 20m from a transforming station
84	Figure C.4 – Example of cabinets for cable network with locally fed equipment and mains placed less than 2 m apart Figure C.5 – Example of cabinets for cable network with remotely fed equipment and mains placed less than 2 m apart
85	Figure C.6 – Example of cabinets for cable network with locally fed equipmentand mains placed more than 2 m apart Figure C.7 – Example of cabinets for cable network with remotely fed equipment and mains placed more than 2m apart
86	C.3.3 Use of galvanic isolation in a cable network with remote power-feeding C.3.4 Use of voltage dependent protective device in a cable network Figure C.8 – Example of an installation placing the amplifier in front of the galvanic isolator
87	Figure C.9 – Example of protection using a voltage depending device on network installations on poles
88	C.4 Subclause 8.1.1 – Japan C.5 Subclause 9.1 – France C.6 Subclause 9.2 – Japan C.7 Subclause 10.1 C.7.1 Sweden C.7.2 UK C.8 Subclause 10.2 – Japan
89	C.9 Subclause 11.1 – Japan C.10 Subclause 11.2 C.10.1 Germany C.10.2 Japan Figure C.10 – Example of the installation of a safety terminal in Japan
90	C.11 Subclause 11.3.2 – Japan C.12 Subclause 11.3.3 – Japan C.13 Subclause 12.2 – Japan Figure C.11 – Examples of installation of a lightning protection system in Japan
91	C.14 Subclause 12.3 – Finland
92	Bibliography

Published By	Publication Date	Number of Pages
BSI	2017	94


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Status	Withdrawn
Title	Cable networks for television signals, sound signals and interactive services – Safety
Replaces	BS EN 60728-11:2010
Publisher	BSI
Committee	EPL/100/4
Pages	94
Publication Date	2017-07-14
Withdrawn Date	2021-11-03
Replaced By	BS EN 60728-11:2017+A11:2018
ISBN	978 0 580 79842 9
Standard Number	BS EN 60728-11:2017
Identical National Standard Of	EN 60728-11:2017, IEC 60728-11:2016
Descriptors	Electronic equipment and components, Electrical testing, Electrical measurement, Electrical wave measurement, Grades (quality), Performance, Receivers, Video signals, Antennas, Communication equipment, Television systems, Acoustic signals, Visual signals, Broadcasting networks, Television networks, Cable television, Communication networks, Telecommunication, Telecommunication systems, Wire transmission (telecommunication)
ICS Codes	33.060.40 - Cabled distribution systems

BS EN 60728-11:2017

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BS EN 60728-11:2017+A11:2018