prEN IEC 60728-11:2019
(Main)Cable networks for television signals, sound signals and interactive services - Part 11: Safety
Cable networks for television signals, sound signals and interactive services - Part 11: Safety
2019-03-22 PC: assessment received for "LVD", result "lack of compliance"
Assessment requested: deadline is 2019-03-29
Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste - Teil 11: Sicherheitsanforderungen
Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs - Partie 11: Sécurité
Kabelska omrežja za televizijske in zvokovne signale ter interaktivne storitve - 11. del: Varnost
General Information
RELATIONS
Standards Content (sample)
SLOVENSKI STANDARD
oSIST prEN IEC 60728-11:2019
01-maj-2019
Kabelska omrežja za televizijske in zvokovne signale ter interaktivne storitve - 11.
del: VarnostCable networks for television signals, sound signals and interactive services - Part 11:
Safety (TA 5)Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste - Teil 11:
Sicherheitsanforderungen
Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion
sonore et services interactifs - Partie 11: SécuritéTa slovenski standard je istoveten z: prEN IEC 60728-11:2019
ICS:
33.060.40 Kabelski razdelilni sistemi Cabled distribution systems
oSIST prEN IEC 60728-11:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 60728-11:2019
100/3208/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60728-11 ED5
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2019-03-15 2019-06-07
SUPERSEDES DOCUMENTS:
100/3140/CD,100/3176A/CC
IEC TA 5 : CABLE NETWORKS FOR TELEVISION SIGNALS, SOUND SIGNALS AND INTERACTIVE SERVICES
SECRETARIAT: SECRETARY:Japan Mr Hiroo Tamura
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel votingThe attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.TITLE:
Cable networks for television signals, sound signals and interactive services - Part 11: Safety
(TA 5)PROPOSED STABILITY DATE: 2024
NOTE FROM TC/SC OFFICERS:
Copyright © 2019 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
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oSIST prEN IEC 60728-11:2019
IEC CDV 60728-11:201X © IEC 201X – 2 – 100/3208/CDV
1 CONTENTS
2 CONTENTS ............................................................................................................................ 2
3 FOREWORD ........................................................................................................................... 6
4 INTRODUCTION ..................................................................................................................... 8
5 1 Scope .............................................................................................................................. 9
6 2 Normative references ...................................................................................................... 9
7 3 Terms, definitions, symbols and abbreviations ............................................................... 11
8 3.1 Terms and definitions ............................................................................................ 11
9 3.2 Symbols ................................................................................................................ 19
10 3.3 Abbreviations ........................................................................................................ 19
11 4 Fundamental requirements ............................................................................................ 20
12 4.1 General ................................................................................................................. 20
13 4.2 Mechanical requirements ...................................................................................... 21
14 4.3 Accessible parts.................................................................................................... 21
15 4.4 Radiation .............................................................................................................. 21
16 4.5 Electromagnetic Radiation .................................................................................... 21
17 4.6 Thermal protection ................................................................................................ 22
18 4.7 Safety in case of Fire and Fire Reaction ............................................................... 22
19 5 Protection against environmental influences .................................................................. 22
20 6 Equipotential bonding and earthing ................................................................................ 22
21 6.1 General requirements ........................................................................................... 22
22 6.2 Equipotential bonding mechanisms ....................................................................... 22
23 6.3 Equipotential bonding in meshed systems ............................................................. 33
24 6.3.1 References to other standards ....................................................................... 33
25 6.3.2 General on AC mains ..................................................................................... 33
26 6.3.3 AC power distribution and connection of the protective conductor .................. 33
27 6.3.4 Dangers and malfunction ............................................................................... 33
28 6.3.5 Measures....................................................................................................... 34
29 7 Mains-supplied equipment ............................................................................................. 34
30 8 Remote power feeding in cable networks ....................................................................... 35
31 8.1 Remote power feeding .......................................................................................... 35
32 8.1.1 Maximum allowed voltages ............................................................................ 35
33 8.1.2 General requirements for equipment .............................................................. 35
34 8.1.3 Current-carrying capacity and dielectric strength of the components .............. 35
35 8.2 Remote powering from subscriber premises .......................................................... 36
36 9 Segregation distances and protection against indirect contact to electric power
37 distribution systems ....................................................................................................... 36
38 9.1 General ................................................................................................................. 36
39 9.2 Overhead lines ...................................................................................................... 36
40 9.2.1 Overhead lines up to 1 000 V......................................................................... 36
41 9.2.2 Overhead lines above 1 000 V ....................................................................... 37
42 9.3 House installations up to 1 000 V .......................................................................... 37
43 10 System outlets and transfer points ................................................................................. 37
44 10.1 General ................................................................................................................. 37
45 10.2 System outlet ........................................................................................................ 38
46 10.2.1 Types of system outlets ................................................................................. 38
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47 10.2.2 Fully isolated system outlet ............................................................................ 38
48 10.2.3 Semi-isolated system outlet ........................................................................... 38
49 10.2.4 Non-isolated system outlet with protective element ........................................ 38
50 10.2.5 Non-isolated system outlet without protective element ................................... 39
51 10.2.6 Fully-isolated system outlet provided by means of a FTTH system ................. 39
52 10.3 Transfer point ....................................................................................................... 40
53 11 Protection against atmospheric over voltages and elimination of potential54 differences .................................................................................................................... 41
55 11.1 General ................................................................................................................. 41
56 11.2 Protection of the antenna system .......................................................................... 42
57 11.2.1 Selection of appropriate methods for protection of antenna systems .............. 42
58 11.2.2 Building equipped with a lightning protection system (LPS)............................ 43
59 11.2.3 Building not equipped with an LPS ................................................................. 50
60 11.3 Earthing and bonding of the antenna system ......................................................... 54
61 11.3.1 Internal protection system .............................................................................. 54
62 11.3.2 Earthing conductors ....................................................................................... 54
63 11.3.3 Earth termination system ............................................................................... 56
64 11.4 Overvoltage protection .......................................................................................... 59
65 12 Mechanical stability ....................................................................................................... 60
66 12.1 General requirements ........................................................................................... 60
67 12.2 Bending moment ................................................................................................... 61
68 12.3 Wind-pressure values ........................................................................................... 62
69 12.4 Mast construction .................................................................................................. 62
70 12.5 Data to be published ............................................................................................. 62
71 Annex A (informative) Earth loop impedance........................................................................ 64
72 A.1 General ................................................................................................................. 64
73 A.2 Earthing for fault conditions .................................................................................. 64
74 A.3 Earthing to protect against hazardous touch voltage ............................................. 65
75 A.4 Temporary safety measures .................................................................................. 66
76 Annex B (informative) Use of shield wires to protect installations with coaxial cables ........... 68
77 B.1 General ................................................................................................................. 68
78 B.2 Soil quality determines shield-wiring necessity ...................................................... 68
79 B.3 Protective measures against direct lightning strikes on underground cables .......... 68
80 Annex C (informative) Differences in some countries ........................................................... 71
81 C.1 Subclause 6.1 ....................................................................................................... 71
82 C.1.1 France ........................................................................................................... 71
83 C.1.2 Japan ............................................................................................................ 71
84 C.2 Subclause 6.2 ....................................................................................................... 71
85 C.2.1 France ........................................................................................................... 71
86 C.2.2 Norway .......................................................................................................... 71
87 C.2.3 Japan and Poland .......................................................................................... 71
88 C.3 Subclause 6.3 – Norway ....................................................................................... 71
89 C.3.1 Justification ................................................................................................... 71
90 C.3.2 Equipotential bonding mechanism for cable networks .................................... 72
91 C.3.3 Use of galvanic isolation in a cable network with remote power-feeding ......... 77
92 C.3.4 Use of voltage dependent protective device in a cable network ...................... 77
93 C.4 Subclause 8.1.1 – Japan ....................................................................................... 79
94 C.5 Subclause 9.1 – France ........................................................................................ 79
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95 C.6 Subclause 9.2 – Japan .......................................................................................... 79
96 C.7 Subclause 10.1 ..................................................................................................... 79
97 C.7.1 Sweden ......................................................................................................... 79
98 C.7.2 UK ................................................................................................................. 79
99 C.8 Subclause 10.2 – Japan ........................................................................................ 79
100 C.9 Subclause 11.1 – Japan ........................................................................................ 80
101 C.10 Subclause 11.2 ..................................................................................................... 80
102 C.10.1 Germany ........................................................................................................ 80
103 C.10.2 Japan ............................................................................................................ 80
104 C.11 Subclause 11.3.2 – Japan ..................................................................................... 81
105 C.12 Subclause 11.3.3 – Japan ..................................................................................... 81
106 C.13 Subclause 12.2 – Japan ........................................................................................ 81
107 C.14 Subclause 12.3 – Finland ...................................................................................... 82
108 Bibliography .......................................................................................................................... 82
109110 Figure 1 – Example of equipotential bonding and earthing of a metal enclosure inside
111 a non-conductive cabinet for outdoor-use ............................................................................. 24
112 Figure 2 – Example of equipotential bonding of a building installation ................................... 25
113 Figure 3 – Example of equipotential bonding and indirect earthing of a metal enclosure
114 inside a non-conductive cabinet for outdoor-use ................................................................... 26
115 Figure 4 – Example of equipotential bonding and earthing of a building installation
116 (underground connection) ..................................................................................................... 28
117 Figure 5 – Example of equipotential bonding and earthing of a building installation
118 (above ground connection) ................................................................................................... 29
119 Figure 6 – Example of equipotential bonding with a galvanic isolated cable entering a
120 building (underground connection) ........................................................................................ 30
121 Figure 7 – Example of maintaining equipotential bonding whilst a unit is removed ................ 32
122 Figure 8a − MDU building installed with FTTH technology to the home ................................. 39
123 Figure 8b − MDU building installed with FTTH technology to the headend ............................ 40
124 Figure 9 0 – Areas of antenna-mounting in or on buildings, where earthing is not
125 mandatory............................................................................................................................. 42
126 Figure 10 – Flow chart for selection of the appropriate method for protecting the
127 antenna system against atmospheric over voltages............................................................... 45
128 Figure 11 – Example of equipotential bonded headends and antennas in a protected
129 volume of the building LPS ................................................................................................... 46
130 Figure 12 – Example of equipotential bonded headends and antennas in a protected
131 volume of the building LPS ................................................................................................... 47
132 Figure 13 – Example of equipotential bonded headends and antennas in a protected
133 volume of an external isolated ATS ....................................................................................... 48
134 Figure 14 – Example of equipotential bonded antennas (not installed in a protected
135 volume) and headend with direct connection to building LPS ................................................ 49
136 Figure 15 – Example of equipotential bonded headend and earthed antennas (building
137 without LPS) ......................................................................................................................... 52
138 Figure 16 – Example of bonding for antennas and headend (building without LPS and
139 lightning risk lower than or equal to the tolerable risk) .......................................................... 53
140 Figure 17 – Example of protecting an antenna system (not installed in a protected
141 volume) by additional bonding conductors (R ................................ RT) .............................. 56
142 Figure 18a – Examples of earthing mechanisms Conductor in building foundations............... 57
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143 Figure 18b – Examples of earthing mechanisms (minimum dimensions Steel rod earth
144 electrodes ............................................................................................................................. 58
145 Figure 18c – Examples of earthing mechanisms (minimum dimensions Steel strip ................ 58
146 Figure 18d – Examples of earthing mechanisms Structural steel work ................................... 59
147 Figure 19 – Example of an overvoltage protective device for single dwelling unit .................. 60
148 Figure 20 – Example of bending moment of an antenna mast ............................................... 61
149 Figure A.1 – Systematic of earth loop resistance .................................................................. 65
150 Figure B.1 – Principle of single shield wire ............................................................................ 69
151 Figure B.2 – Principle of two shield wires .............................................................................. 70
152 Figure C.1 – IT power distribution system in Norway ............................................................. 72
153 Figure C.2 – Example of installations located farther than 20 m away from a154 transforming station .............................................................................................................. 73
155 Figure C.3 – Example of installations located closer than 20m from a transforming
156 station .................................................................................................................................. 74
157 Figure C.4 – Example of cabinets for cable network with locally fed equipment and
158 mains placed less than 2 m apart .......................................................................................... 75
159 Figure C.5 – Example of cabinets for cable network with remotely fed equipment and
160 mains placed less than 2 m apart .......................................................................................... 75
161 Figure C.6 – Example of cabinets for cable network with locally fed equipment and
162 mains placed more than 2 m apart ........................................................................................ 76
163 Figure C.7 – Example of cabinets for cable network with remotely fed equipment and
164 mains placed more than 2m apart ......................................................................................... 76
165 Figure C.8 – Example of an installation placing the amplifier in front of the galvanic
166 isolator ................................................................................................................................. 77
167 Figure C.9 – Example of protection using a voltage depending device on network
168 installations on poles ............................................................................................................ 78
169 Figure C.10 – Example of the installation of a safety terminal in Japan ................................. 80
170 Figure C.11 – Examples of installation of a lightning protection system in Japan .................. 81
171172 Table 1 – Maximum allowed operation voltages and maximum recommended currents
173 for coaxial cables in the EN 50117 series ............................................................................. 36
174 Table 2 – Solutions for protection of antenna systems against atmospheric175 overvoltages ......................................................................................................................... 43
176 Table B.1 – Conductivity of different types of soil .................................................................. 68
177 Table B.2 – Protection factors (K ) of protection measures against direct lightning
178 strokes for buried cables ....................................................................................................... 69
179180
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181 INTERNATIONAL ELECTROTECHNICAL COMMISSION
182 ___________
183
184 CABLE NETWORKS FOR TELEVISION SIGNALS,
185 SOUND SIGNALS AND INTERACTIVE SERVICES –
186
187 Part 11: Safety
188
189 FOREWORD
190 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
191 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
192 international co-operation on all questions concerning standardization in the electrical and electronic fields. To
193 this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
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195 Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
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198 with the International Organization for Standardization (ISO) in accordance with conditions determined by
199 agreement between the two organizations.200 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
201 consensus of opinion on the relevant subjects since each technical committee has representation from all
202 interested IEC National Committees.203 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
204 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
205 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
206 misinterpretation by any end user.207 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
208 transparently to the maximum extent possible in their national and regional publications. Any divergence
209 between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
210 the latter.211 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
212 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
213 services carried out by independent certification bodies.214 6) All users should ensure that they have the latest edition of this publication.
215 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
216 members of its technical committees and IEC National Committees for any personal injury, property damage or
217 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
218 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
219 Publications.220 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
221 indispensable for the correct application of this publication.222 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
223 patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
224 International Standard IEC 60728-11 has been prepared by technical area 5: Cable networks
225 for television signals, sound signals and interactive services, of IEC technical committee 100:
226 Audio, video and multimedia systems and equipment.227 This fifth edition cancels and replaces the fourth edition published in 2016. This edition
228 constitutes a technical revision.229 This edition includes the following significant technical changes with respect to the previous
230 edition.231 • Replacement of IEC 60065 and IEC 609501 with IEC 62368-1:2018
232 • Re-wording of much of the standard in order to comply with the new low voltage
233 directive234 • Revised definition of class I equipment, class II equipment, main earthing terminal
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235 • Addition of definitions for harm, hazard, Ordinary person, Instructed person, Skilled
236 person237 • Additional requirement to provide details on the equipment installed
238 • Additional mechanical, design and construction requirements
239 • Changes to the accessible part requirements
240 • The introduction of radiation requirements
241 • The current carrying capacity and dielectric strength of components is now obligatory
242 • The assessment of the risk of lightning strike is now obligatory243 • Extension of remote feeding voltage on subscriber feeder.
244 • Consideration of the Electro-Magnetic Field Directive (EMF)
245 • Consideration of the Construction Product Regulation (CPR)
246 • Addition of Annex ZZ
247 The text of this standard is based on the following documents:
FDIS Report on voting
100/XXX/FDIS 100/XXXX/RVD
248
249 Full information on the voting for the approval of this standard can be found in the report on
250 voting indicated in the above table.251 The list of all the parts of the IEC 60728 series, under the general title Cable networks for
252 television signals, sound signals and interactive services, can be found on the IEC website.
253 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
254 The committee has decided that the contents of this publication will remain unchanged until
255 the stability date indicated on the IEC web site under "http://webstore.iec.c
...
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