oSIST prEN IEC 61558-2-9:2023
(Main)Safety of transformers, reactors, power supply units and combinations thereof - Part 2-9: Particular requirements and tests for transformers and power supply units for class III handlamps
Safety of transformers, reactors, power supply units and combinations thereof - Part 2-9: Particular requirements and tests for transformers and power supply units for class III handlamps
Sécurité des transformateurs, bobines d'inductance, blocs d'alimentation et des combinaisons de ces éléments - Partie 2-9: Règles particulières et essais pour les transformateurs et blocs d'alimentation pour lampes baladeuses de classe III
Varnost transformatorjev, dušilk, napajalnikov in podobnih proizvodov - 2-9. del: Posebne zahteve in preskusi za transformatorje in napajalnike za ročne svetilke razreda III
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN IEC 61558-2-9:2023
01-marec-2023
Varnost transformatorjev, dušilk, napajalnikov in podobnih proizvodov - 2-9. del:
Posebne zahteve in preskusi za transformatorje in napajalnike za ročne svetilke
razreda III
Safety of transformers, reactors, power supply units and combinations thereof - Part 2-9:
Particular requirements and tests for transformers and power supply units for class III
handlamps
Sécurité des transformateurs, bobines d'inductance, blocs d'alimentation et des
combinaisons de ces éléments - Partie 2-9: Règles particulières et essais pour les
transformateurs et blocs d'alimentation pour lampes baladeuses de classe III
Ta slovenski standard je istoveten z: prEN IEC 61558-2-9:2023
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
oSIST prEN IEC 61558-2-9:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 61558-2-9:2023
96/566/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61558-2-9 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-01-13 2023-04-07
SUPERSEDES DOCUMENTS:
96/560/RR
IEC TC 96 : TRANSFORMERS, REACTORS, POWER SUPPLY UNITS, AND COMBINATIONS THEREOF
SECRETARIAT: SECRETARY:
Germany Mr Wolfgang Reichelt
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 voting
The 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:
Safety of transformers, reactors, power supply units and combinations thereof - Part 2-9:
Particular requirements and tests for transformers and power supply units for class III
handlamps
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
Copyright © 2022 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 permission in writing from IEC.
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oSIST prEN IEC 61558-2-9:2023
IEC CDV 61558-2-9 © IEC 2022 2 96/566/CDV
1 CONTENTS
2
3 FOREWORD. 3
4 INTRODUCTION . 5
5 1 Scope . 6
6 2 Normative references . 7
7 3 Terms and definitions . 7
8 4 General requirements . 7
9 5 General notes on tests . 7
10 6 Ratings . 8
11 7 Classification . 8
12 8 Marking and other information . 9
13 9 Protection against electric shock . 10
14 10 Change of input voltage setting . 10
15 11 Output voltage and output current under load . 10
16 12 No-load output voltage . 10
17 13 Short-circuit voltage . 11
18 14 Heating . 11
19 15 Short-circuit and overload protection . 11
20 16 Mechanical strength . 11
21 17 Protection against harmful ingress of dust, solid objects and moisture . 11
22 18 Insulation resistance, dielectric strength and leakage current . 11
23 19 Construction . 11
24 20 Components . 13
25 21 Internal wiring . 14
26 22 Supply connection and other external flexible cables or cords . 14
27 23 Terminals for external conductors . 14
28 24 Provisions for protective earthing . 14
29 25 Screws and connections . 14
30 26 Creepage distances, clearances and distances through insulation . 14
31 27 Resistance to heat, fire and tracking . 14
32 28 Resistance to rusting . 14
33 Annexes . 15
34 Bibliography . 16
35
36 Table 101 – Symbols indicating the kind of transformer . 9
37 Table 102 – Output voltage ratio . 11
38
39
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40 INTERNATIONAL ELECTROTECHNICAL COMMISSION
41 ____________
42
43 SAFETY OF TRANSFORMERS, REACTORS,
44 POWER SUPPLY UNITS AND COMBINATIONS THEREOF –
45
46 Part 2-9: Particular requirements and tests for transformers and
47 power supply units for class III handlamps
48
49
50 FOREWORD
51 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
52 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
53 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
54 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
55 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
56 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
57 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
58 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
59 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
60 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
61 consensus of opinion on the relevant subjects since each technical committee has representation from all
62 interested IEC National Committees.
63 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
64 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
65 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
66 misinterpretation by any end user.
67 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
68 transparently to the maximum extent possible in their national and regional publications. Any divergence between
69 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
70 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
71 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
72 services carried out by independent certification bodies.
73 6) All users should ensure that they have the latest edition of this publication.
74 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
75 members of its technical committees and IEC National Committees for any personal injury, property damage or
76 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
77 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
78 Publications.
79 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
80 indispensable for the correct application of this publication.
81 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
82 rights. IEC shall not be held responsible for identifying any or all such patent rights.
83 International standard IEC 61558-2-9 has been prepared by IEC technical committee 96:
84 Transformers, reactors, power supply units and combinations thereof.
85 This third edition cancels and replaces the second edition published in 2010. This edition
86 constitutes a technical revision.
87 This edition includes the following significant technical changes with respect to the previous
88 edition:
89 a) adjustment of structure and references in accordance with IEC 61558-1:2017;
90 b) new symbol for power supply unit with linearly regulated output voltage.
91 c) document is not only valid for transformers for tungsten filament handlamps
92
93
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94 The text of this document is based on the following documents:
Draft Report on voting
96/XXX/FDIS 96/XXX/RVD
95
96 Full information on the voting for its approval can be found in the report on voting indicated in
97 the above table.
98 The language used for the development of this document is English.
99 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
100 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
101 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
102 described in greater detail at www.iec.ch/standardsdev/publications.
103 It has the status of a group safety publication in accordance with IEC Guide 104.
104 This document is to be used in conjunction with IEC 61558-1:2017.
105 This document supplements or modifies the corresponding clauses in IEC 61558-1:2017, so as
106 to convert that publication into the IEC standard: Particular requirements and tests for
107 transformers and power supply units for class III handlamps.
108 A list of all parts in the IEC 61558 series published under the general title Safety of transformers,
109 reactors, power supply units and combinations thereof, can be found on the IEC website.
110 Future standards in this series will carry the new general title as cited above. Titles of existing
111 standards in this series will be updated at the time of the next edition.
112 Where this document states "addition", "modification" or "replacement", the relevant text of
113 IEC 61558-1:2017 is to be adopted accordingly.
114 In this document, the following print types are used:
115 − requirements proper: in roman type;
116 − test specifications: in italic type;
117 − explanatory matter: in smaller roman type.
118 In the text of this document, the words in bold are defined in Clause 3.
119 Subclauses, notes, figures and tables additional to those in IEC 61558-1:2017 are numbered
120 starting from 101; supplementary annexes are entitled AA, BB, etc.
121 The committee has decided that the contents of this document will remain unchanged until the
122 stability date indicated on the IEC website under www.webstore.iec.ch in the data related to the
123 specific document. At this date, the document will be
124 • reconfirmed,
125 • withdrawn,
126 • replaced by a revised edition, or
127 • amended.
128
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129 INTRODUCTION
130 IEC TC 96 has a group safety function in accordance with IEC Guide 104 for transformers other
131 than those intended to supply distribution networks, in particular transformers and power supply
132 units intended to allow the application of protective measures against electric shock as defined
133 by TC 64, but in certain cases including the limitation of voltage and horizontal safety function
134 for SELV, in accordance with IEC 60364-4-41.
135 The group safety function (GSF) is used because of responsibility for example for safety extra-
136 low voltage (SELV) in accordance with IEC 61140:2016, 5.2.6 and IEC 60364-4-41:2005,
137 414.3.1 or control circuits in accordance with IEC 60204-1:2016, 7.2.4.
138 The group safety function is used for each part of IEC 61558-2 because different standards of
139 the IEC 61558 series can be combined in one construction but in certain cases with no limitation
140 of rated output power.
141 For example an auto-transformer in accordance with IEC 61558-2-13 can be designed with a
142 separate SELV-circuit in accordance with the particular requirements for IEC 61558-2-6 relating
143 to the general requirements of IEC 61558-1.
144
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145 SAFETY OF TRANSFORMERS, REACTORS,
146 POWER SUPPLY UNITS AND COMBINATIONS THEREOF –
147
148 Part 2-9: Particular requirements and tests for transformers and
149 power supply units for class III handlamps
150
151
152 1 Scope
153 Replacement
154 This part of IEC 61558 deals with the safety of transformers for class III handlamps and
155 power supply units incorporating transformers for class III handlamps. Transformers
156 incorporating electronic circuits are also covered by this document.
157 NOTE 1 Safety includes electrical, thermal and mechanical aspects.
158 Unless otherwise specified, from here onward, the term transformer covers transformers for
159 class III handlamps and power supply units incorporating transformers for class III
160 handlamps.
161 For power supply units (linear) this document is applicable. For switch mode power supply
162 units IEC 61558-2-16 is applicable together with this document. Where two requirements are
163 in conflict, the most severe take precedence.
164 This document is applicable to stationary or portable, single-phase, air-cooled (natural or
165 forced) independent or associated dry-type transformers. The windings can be encapsulated
166 or non-encapsulated.
167 The rated supply voltage does not exceed 1 000 V AC and the rated supply frequency and
168 the internal operating frequencies do not exceed 500 Hz.
169 Transformers have the following additional characteristics:
170 − the no-load output voltage and the rated output voltage do not exceed 50 V AC or 120 V
171 ripple-free DC;
172 − there is only a small difference between the no-load output voltage and the rated output
173 voltage.
174 The rated output does not exceed 10 kVA.
175 This document is not applicable to external circuits and their components intended to be
176 connected to the input terminals and output terminals of the transformers.
177 NOTE 3 Transformers covered by this document are only used in applications where double or reinforced
178 insulation between circuits is required by the installation rules or by the end product standard .
179 Attention is drawn to the following, if necessary:
180 − for transformers intended to be used in vehicles, on board ships, and aircraft, additional
181 requirements (from other applicable standards, national rules, etc.);
182 − measures to protect the enclosure and the components inside the enclosure against
183 external influences such as
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