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kSIST fprEN IEC 61558-2-12:2024

(Main)

Safety of transformers, reactors, power supply units and combination thereof - Part 2-12: Particular requirements and tests for constant voltage transformers and power supply units for constant voltage

Safety of transformers, reactors, power supply units and combination thereof - Part 2-12: Particular requirements and tests for constant voltage transformers and power supply units for constant voltage

IEC 61558-2-12:2024 is available as IEC 61558-2-12:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 61558-2-12:2024 deals with the safety of constant voltage transformers for general applications and power supply units for constant voltage for general applications. Constant voltage transformers incorporating electronic circuits are also covered by this document.
This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) adjustment of structure and references in accordance with IEC 61558-1:2017;
b) description of constructions moved to IEC 61558-1:2017;
c) new symbol for power supply unit with linearly regulated output voltage.
It has the status of a group safety publication in accordance with IEC Guide 104.

Sicherheit von Transformatoren, Drosseln, Netzgeräten und entsprechenden Kombinationen - Teil 2-12: Besondere Anforderungen und Prüfungen für magnetische Spannungskonstanthalter und Netzgeräte, die Spannungskonstanthalter enthalten

Sécurité des transformateurs, bobines d'inductance, blocs d'alimentation et des combinaisons de ces éléments - Partie 2-12: Exigences particulières et essais pour les transformateurs à tension constante et les blocs d'alimentation pour tension constante

IEC 61558-2-12:2024 est disponible sous forme de IEC 61558-2-12:2024 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

L'IEC 61558-2-12:2024 traite de la sécurité des transformateurs à tension constante pour applications d'ordre général et des blocs d'alimentation pour tension constante pour applications d'ordre général. Les transformateurs à tension constante qui incorporent des circuits électroniques sont également couverts par le présent document.
Cette troisième édition annule et remplace la deuxième édition parue en 2011. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) la structure et les références ont été alignées sur l’IEC 61558-1:2017;
b) la description des constructions a été déplacée dans l’IEC 61558-1:2017;
c) un nouveau symbole a été ajouté pour les blocs d'alimentation dont la régulation de la tension secondaire est linéaire.
Il a le statut de publication groupée de sécurité conformément au Guide 104 de l'IEC.

Varnost transformatorjev, dušilk, napajalnikov in kombinacij teh elementov - 2-12. del: Posebne zahteve in preskusi za transformatorje s konstantno napetostjo in napajalnike s konstantno napetostjo

General Information

Status
Not Published
Public Enquiry End Date
30-Jan-2023
ICS
29.180 - Transformers. Reactors
Technical Committee
I96 - Imaginarni 96
Current Stage
5020 - Formal vote (FV) (Adopted Project)
Start Date
12-Jan-2024
Due Date
01-Mar-2024
Completion Date
15-Mar-2024
Directive
2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
Ref Project
FprEN IEC 61558-2-12:2024 - Safety of transformers, reactors, power supply units and combination thereof - Part 2-12: Particular requirements and tests for constant voltage transformers and power supply units for constant voltage

Relations

Revised
SIST EN 61558-2-12:2011 - Safety of transformers, reactors, power supply units and combinations thereof - Part 2-12: Particular requirements and tests for constant voltage transformers and power supply units for constant voltage (IEC 61558-2-12:2011)
Effective Date
26-Jul-2022

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SLOVENSKI STANDARD
oSIST prEN IEC 61558-2-12:2023
01-januar-2023
Varnost transformatorjev, dušilk, napajalnikov in kombinacij teh elementov - 2-12.
del: Posebne zahteve in preskusi za transformatorje s konstantno napetostjo in
napajalnike s konstantno napetostjo
Safety of transformers, reactors, power supply units and combination thereof - Part 2-12:
Particular requirements and tests for constant voltage transformers and power supply
units for constant voltage
Sécurité des transformateurs, bobines d'inductance, blocs d'alimentation et des
combinaisons de ces éléments - Partie 2-12: Exigences particulières et essais pour les
transformateurs à tension constante et les blocs d'alimentation pour tension constante
Ta slovenski standard je istoveten z: prEN IEC 61558-2-12:2022
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
oSIST prEN IEC 61558-2-12:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN IEC 61558-2-12:2023

---------------------- Page: 2 ----------------------
oSIST prEN IEC 61558-2-12:2023

96/559/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:

IEC 61558-2-12 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:

2022-11-25 2023-02-17
SUPERSEDES DOCUMENTS:

96/546/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:

SC 3C,TC 14,TC 22,SC 22E,SC 34C,TC 51,TC
55,TC 61,SC 62A,TC 64,TC 66,TC 77,TC 85,TC
Other TC/SCs are requested to indicate their interest, if
97,TC 106,TC 108,TC 109,TC 111,TC 112
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 combination thereof - Part 2-12:
Particular requirements and tests for constant voltage transformers and power supply units for
constant voltage

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.

---------------------- Page: 3 ----------------------
oSIST prEN IEC 61558-2-12:2023
IEC CDV 61558-2-12 © IEC 2022 2 96/559/CDV

1 CONTENTS
2 FOREWORD. 3
3 INTRODUCTION . 5
4 1 Scope . 6
5 2 Normative references . 8
6 3 Terms and definitions . 8
7 4 General requirements . 9
8 5 General notes on tests . 9
9 6 Ratings . 9
10 7 Classification . 10
11 8 Marking and other information . 10
12 9 Protection against electric shock . 12
13 10 Change of input voltage setting . 12
14 11 Output voltage and output current under load .
...

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This part of IEC 61558 deals with the safety of constant voltage transformers for general applications and power supply units for constant voltage for general applications. Constant voltage transformers incorporating electronic circuits are also covered by this standard.
NOTE 1 Safety includes electrical, thermal and mechanical aspects.
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Replacement:
This part of IEC 61558 deals with the safety of transformers for class III handlamps for tungsten filament lamps and power supply units incorporating transformers for class III handlamps for tungsten filament lamps. Transformers incorporating electronic circuits are also covered by this standard.
NOTE 1 Safety includes electrical, thermal, mechanical and chemical aspects.
Unless otherwise specified, from here onward, the term transformer covers transformers for
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– the no-load output voltage and the rated output voltage do not exceed 50 V a.c. or 120 V ripple-free d.c.;
– there is only a small difference between the no-load voltage and the rated output voltage.
The rated output does not exceed:
– 10 kVA.
This part is not applicable to external circuits and their components intended to be connected to the input terminals and output terminals of the transformers. Transformers covered by this part are used in applications where double or reinforced insulation between circuits is required by the installation rules or by the end product standard.
NOTE 2 Attention is drawn to the following:
- for transformers intended to be used in vehicles, on board ships, and aircraft, additional requirements (from other applicable standards, national rules, etc.) may be necessary;
- measures to protect the enclosure and the components inside the enclosure against external influences such as fungus, vermin, termites, solar-radiation, and icing should also be considered;
- the different conditions for transportation, storage, and operation of the transformers should also be considered;
- additional requirements in accordance with other appropriate standards and national rules may be applicable to transformers intended for use in special environments.
NOTE 3 Future technological development of transformers may necessitate a need to increase the upper limit of the frequencies, until then this part may be used as a guidance document.

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SIST EN 61558-2-20:2011
Safety of transformers, reactors, power supply units and combinations thereof - Part 2-20: Particular requirements and tests for small reactors (IEC 61558-2-20:2010)
EN 61558-2-20:2011

Replacement:
This part of IEC 61558 deals with the safety of small reactors for general applications.
NOTE 1 Safety includes electrical, thermal and mechanical aspects.
Unless otherwise specified, from here onward, the term transformer or reactor covers small
reactors.
This part is applicable to stationary or portable, single-phase or polyphase, air-cooled (natural
or forced) general purpose reactors including alternating current, premagnetised and current
compensated independent or associated reactors.
The rated supply voltage does not exceed 1 000 V a.c. or 1 500V ripple-free d.c., the rated supply frequency and the internal operational frequencies do not exceed 1 MHz.
The rated power does not exceed:
– 25 kVAR a.c. (25 kW d.c.) for single-phase reactors,
– 50 kVAR a.c. (50 kW d.c.) for poly-phase reactors.
This part is applicable to reactors without limitations of the rated power subject to an agreement between the purchaser and the manufacturer.
This part is applicable to dry-type reactors. The windings may be encapsulated or nonencapsulated.
This part does not apply to:
– reactors covered by IEC 60289;
– ballast for tubular fluorescent covered by IEC 61347-2-8;
– ballast for discharge lamps (excluding tubular fluorescent lamps) covered by IEC 61347-2-9.
NOTE 2 For reactors filled with liquid dielectric or pulverised material such as sand, additional requirements are under consideration.
NOTE 3 Attention is drawn to the following:
- for reactors intended to be used in vehicles, on board ships, and aircraft, additional requirements (from other applicable standards, national rules, etc.) may be necessary;
- measures to protect the enclosure and the components inside the enclosure against external influences such as fungus, vermin, termites, solar-radiation, and icing should also be considered;
- the different conditions for transportation, storage, and operation of the reactor should also be considered;
- additional requirements in accordance with other appropriate standards and national rules may be applicable to reactors intended for use in special environments, such as tropical environment.
NOTE 4 Normally, reactors are intended to be associated with equipment for functional requirements of the equipment or requirements by the installation rules or by other appliance specifications.
NOTE 5 Reactors incorporating electronic circuits and components are also covered by this standard.
NOTE 6 The protection against electric shock may be provided (or completed) by other parts or features of the equipment, such as the body.
NOTE 7 Reactors for particular applications will in the future be covered by complementary normative annexes.
NOTE 8 Future technological development of reactors may necessitate a need to increase the upper limit of the frequencies, until then this part may be used as a guidance document.

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