Safety of power transformers, power supplies, reactors and similar products -- Part 2-1: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications

This part of IEC 61558 deals with safety aspects of separating transformers and power supplies incorporating separating transformers such as electrical, thermal and mechanical safety. This Part 2-1 is applicable to separating transformers and power supplies incorporating both separating transformers and electronic circuits. This Part 2-1 is not applicable to external circuits and their components intended to be connected to the input terminals, output terminals or socket-outlets of the transformers and power supplies. This Part 2-1 does not apply to transformers covered by IEC 60076-11. This Part 2-1 applies to stationary or portable, single-phase or polyphase, air-cooled (natural or forced) independent and associated separating transformers and power supplies, having a rated supply voltage not exceeding 1 000 V a.c., a rated supply and internal operating frequency not exceeding 500 Hz. The rated output does not exceed: - 1 kVA for single-phase separating transformers and single-phase power supplies incorporating separating transformers; - 5 kVA for poly-phase separating transformers and poly-phase power supplies incorporating separating transformers. This Part 2-1 is applicable to separating transformers and power supplies incorporating separating transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer. This Part 2-1 is applicable to dry-type transformers. The windings may be encapsulated or non-encapsulated. The no-load output voltage or the rated output voltage does not exceed 1 000 V a.c. or 1 415 V ripple-free d.c. For independent separating transformers and independent power supplies, the no-load output voltage and / or the rated output voltage is not less than 50 V a.c., or 120 V ripple-free d.c.

Sicherheit von Transformatoren, Netzgeräten, Drosseln und dergleichen - Teil 2-1: Besondere Anforderungen und Prüfungen an Netztransformatoren und Netzgeräten, die Netztransformatoren enthalten, für allgemeine Anwendungen

Sécurité des transformateurs, alimentations, bobines d'inductance et produits analogues -- Partie 2-1: Règles particulières et essais pour transformateurs d'isolement à enroulements séparés et alimentations incorporant des transformateurs d'isolement à enroulements séparés pour applications d'ordre général

La présente partie de la CEI 61558 traite des aspects relatifs à la sécurité des transformateurs d'isolement à enroulements séparés et des alimentations incorporant des transformateurs d'isolement à enroulements séparés tels que les aspects de sécurité électrique, thermique et mécanique. Cette deuxième édition annule et remplace la première édition publiée en 1997. Elle constitue une révision technique. Les principales modifications consistent en la mise à jour de cette Partie 2-1 conformément à la Partie 1 édition 2, et en l'ajout des alimentations dans le domaine d'application. Cette Partie 2-1 a le statut de publication groupée de sécurité conformément au guide CEI 104.

Varnost močnostnih transformatorjev, napajalnikov, reaktorjev in podobnih izdelkov - 2-1. del: Posebne zahteve za ločilne transformatorje in napajalnike z ločilnimi transformatorji za splošno rabo (IEC 61558-2-1:2007)

General Information

Status
Published
Publication Date
04-Nov-2007
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
12-Oct-2007
Due Date
17-Dec-2007
Completion Date
05-Nov-2007

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Safety of power transformers, power supplies, reactors and similar products - Part 2-1: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applicationsSRGREQLKSécurité des transformateurs,alimentations, bobines d'inductanceet produits analogues - Partie 2-1: Regles particulieres et essaispour transformateurs d'isolementa enroulements séparés et alimentationsincorporant des transformateursd'isolement a enroulements séparéspour applications d'ordre généralSicherheit von Transformatoren,Netzgeräten, Drosseln und dergleichen -Teil 2-1: Besondere Anforderungenund Prüfungen an Netztransformatorenund Netzgeräten, die Netztransformatorenenthalten, für allgemeine AnwendungenTa slovenski standard je istoveten z:EN 61558-2-1:2007SIST EN 61558-2-1:2007en29.180Transformatorji. DušilkeTransformers. ReactorsICS:SIST EN 61558-2-1:19991DGRPHãþDSLOVENSKI
STANDARDSIST EN 61558-2-1:200701-december-2007







EUROPEAN STANDARD EN 61558-2-1 NORME EUROPÉENNE
EUROPÄISCHE NORM March 2007
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2007 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61558-2-1:2007 E
ICS 29.180 Supersedes EN 61558-2-1:1997
English version
Safety of power transformers, power supplies,
reactors and similar products -
Part 2-1: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers
for general applications (IEC 61558-2-1:2007)
Sécurité des transformateurs, alimentations, bobines d'inductance
et produits analogues -
Partie 2-1: Règles particulières et essais pour transformateurs d'isolement
à enroulements séparés et alimentations incorporant des transformateurs d'isolement à enroulements séparés
pour applications d'ordre général (CEI 61558-2-1:2007)
Sicherheit von Transformatoren, Netzgeräten, Drosseln und dergleichen - Teil 2-1: Besondere Anforderungen
und Prüfungen an Netztransformatoren und Netzgeräten, die Netztransformatoren enthalten, für allgemeine Anwendungen
(IEC 61558-2-1:2007)
This European Standard was approved by CENELEC on 2007-02-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.



- 2 -
Foreword The text of document 96/252/FDIS, future edition 2 of IEC 61558-2-1, prepared by IEC TC 96, Small power transformers, reactors, power supply units and similar products, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61558-2-1 on 2007-02-01. This European Standard supersedes EN 61558-2-1:1997. The main changes consist of updating this Part 2-1 in accordance with EN 61558-1:2005, and adding power supplies to the scope. This Part 2-1 is intended to be used in conjunction with the latest edition of EN 61558-1 and its amendments. It is based on EN 61558-1:2005.
This Part 2-1 supplements or modifies the corresponding clauses in EN 61558-1, so as to convert that publication into the European standard: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications.
Where a particular subclause of Part 1 is not mentioned in this Part 2-1, that subclause applies as far as is reasonable. Where this Part 2-1 states "addition", "modification" or "replacement", the relevant text of Part 1 is to be adapted accordingly.
The following dates were fixed: – latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dop)
2007-11-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2010-02-01 In this Part 2-1, the following print types are used: – requirements proper: in roman type; – test specifications: in italic type; – explanatory matter: in smaller roman type. In the text of this Part 2-1, the words in bold are defined in Clause 3. Subclauses additional to those in Part 1 are numbered starting from 101; supplementary annexes are entitled AA, BB, etc. Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 61558-2-1:2007 was approved by CENELEC as a European Standard without any modification. __________



EN 61558-2-1:2007
- 3 -
Annex ZA (normative)
Normative references to international publications with their corresponding European publications
Addition: Publication Year Title EN/HD Year IEC 60076-11 - 1) Power transformers -
Part 11: Dry-type transformers EN 60076-11 2004 2)
1) Undated reference.
2) Valid edition at date of issue.







NORME INTERNATIONALE CEIIEC INTERNATIONAL STANDARD 61558-2-1Deuxième éditionSecond edition2007-01 Sécurité des transformateurs, alimentations, bobines d'inductance et produits analogues – Partie 2-1: Règles particulières et essais pour transformateurs d’isolement à enroulements séparés et alimentations incorporant des transformateurs d’isolement
à enroulements séparés pour applications
d’ordre général
Safety of power transformers, power supplies, reactors and similar products – Part 2-1: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications
Pour prix, voir catalogue en vigueur For price, see current catalogue© IEC 2007
Droits de reproduction réservés

Copyright - all rights reserved Aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photo-copie et les microfilms, sans l'accord écrit de l'éditeur. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission,
3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch
Web: www.iec.ch Commission Electrotechnique InternationaleInternational Electrotechnical CommissionM CODE PRIX PRICE CODE PUBLICATION GROUPÉE DE SÉCURITÉ
GROUP SAFETY PUBLICATION



61558-2-1 © IEC:2007
– 3 –
CONTENTS FOREWORD.5
1 Scope.9 2 Normative references.11 3 Terms and definitions.11 4 General requirements.11 5 General notes on tests.13 6 Ratings.13 7 Classification.13 8 Marking and other information.13 9 Protection against electric shock.15 10 Change of input voltage setting.15 11 Output voltage and output current under load.15 12 No-load output voltage.15 13 Short-circuit voltage.17 14 Heating.17 15 Short-circuit and overload protection.17 16 Mechanical strength.17 17 Protection against harmful ingress of dust, solid objects and moisture.17 18 Insulation resistance, dielectric strength and leakage current.17 19 Construction.19 20 Components.19 21 Internal wiring.21 22 Supply connection and other external flexible cable or cords.21 23 Terminals for external conductors.21 24 Provisions for protective earthing.21 25 Screws and connections.21 26 Creepage distances, clearances and distances through insulation.21 27 Resistance to heat, fire and tracking.21 28 Resistance to rusting.21
Annexes.23



61558-2-1 © IEC:2007
– 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION _________
SAFETY OF POWER TRANSFORMERS, POWER SUPPLIES, REACTORS AND SIMILAR PRODUCTS –
Part 2-1: Particular requirements and tests
for separating transformers and power supplies
incorporating separating transformers
for general applications
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may Participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also Participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International st
...

SLOVENSKI oSIST prEN 61558-2-1:2005

PREDSTANDARD
julij 2005
Varnost močnostnih transformatorjev, napajalnikov, reaktorjev in podobnih
izdelkov – 2-1. del: Posebne zahteve za ločilne transformatorje in napajalnike
z ločilnimi transformatorji za splošno rabo
Safety of power transformers, power supplies, reactors and similar products – Part
2-1: Particular requirements for separating transformers and power supplies
incorporating separating transformers for general applications
ICS 29.180 Referenčna številka
oSIST prEN 61558-2-1:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------
96/225/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJET DE COMITÉ POUR VOTE (CDV)
Project number IEC 61558-2-1 Ed. 2.0
Numéro de projet

IEC/TC or SC: Date of circulation Closing date for voting (Voting
TC 96
Date de diffusion mandatory for P-members)
CEI/CE ou SC:

Date de clôture du vote (Vote
2005-05-20
obligatoire pour les membres (P))
2005-10-21
Titre du CE/SC:    TC/SC Title: Safety of power transformers, power
supplies, reactors and similar products
Secretary: Wolfgang Reichelt
Secrétaire:
Also of interest to the following committees Supersedes document
Intéresse également les comités suivants Remplace le document
   96/172/CD, 96/180/CC
Functions concerned
Fonctions concernées
Safety EMC Environment Quality assurance
Sécurité
CEM Environnement Assurance qualité
CE DOCUMENT EST TOUJOURS À L'ÉTUDE ET SUSCEPTIBLE DE THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT
MODIFICATION. IL NE PEUT SERVIR DE RÉFÉRENCE. SHOULD NOT BE USED FOR REFERENCE PURPOSES.
LES RÉCIPIENDAIRES DU PRÉSENT DOCUMENT SONT INVITÉS À RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR
PRÉSENTER, AVEC LEURS OBSERVATIONS, LA NOTIFICATION DES COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF
DROITS DE PROPRIÉTÉ DONT ILS AURAIENT ÉVENTUELLEMENT WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING
CONNAISSANCE ET À FOURNIR UNE DOCUMENTATION EXPLICATIVE. DOCUMENTATION.


Title : IEC 61558-2-1 Ed.2: Safety of power transformers, power supplies, reactors and similar
products Part 2-1 Particular requirements for separating transformers and power supplies
incorporating separating transformers for general applications


Introductory note
This part 2-1 of IEC 61558 applies to stationary and portable, single-phase and polyphase, air-
cooled (natural or forced) independent and associated separating transformers, having a rated
supply voltage not exceeding 1000 V a.c., a rated supply and internal operating frequency not
exceeding 500 Hz.
.

ATTENTION ATTENTION

CDV soumis en parallèle au vote (CEI) Parallel IEC CDV/CENELEC Enquiry
et à l’enquête (CENELEC)

Copyright © 2005 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.
FORM CDV (IEC) 2002-08-09

---------------------- Page: 2 ----------------------
61558-2-1 Ed 2/CDV © IEC – 2 –


INTERNATIONAL ELECTROTECHNICAL COMMISSION
_________

SAFETY OF POWER TRANSFORMERS, POWER SUPPLIES,
REACTORS AND SIMILAR PRODUCTS
Part 2-1: Particular requirements for separating transformers and power
supplies incorporating separating transformers
for general applications


FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all
national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international co-
operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition
to other activities, the IEC publishes International Standards. Their preparation is entrusted to technical committees;
any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International,
governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC
collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions
determined by agreement between the two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all interested
National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form of
standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards
transparently to the maximum extent possible in their national and regional standards. Any divergence between the
IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International standard IEC 61558-2-1 has been prepared by technical committee 96: Small power
transformers, reactors and power supply units and similar products.
Future standards in this series will carry the new title as cited above. Titles of existing standards in this
series will be updated at the time of the next revision.
It has the status of a group safety publication in accordance with IEC Guide 104: The preparation of
safety publications and the use of basic safety publications and group safety publications (1997).

The text of this standard is based on the following documents:



Full information on the voting for the approval of this standard can be found in the report on voting
indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.

---------------------- Page: 3 ----------------------
61558-2-1 Ed 2/CDV © IEC – 3 –



This part 2 is intended to be used in conjunction with the latest Edition of IEC 60558-1 and its
amendments. It is based on the second edition of that standard.
This part 2 supplements or modifies the corresponding clauses in IEC 61558-1, so as to convert that
publication into the IEC standard: Particular requirements for separating transformers and power
supplies incorporating separating transformers for general applications

This standard replace Edition 1

Where a specific subclause of part 1 is not mentioned in this part 2, that subclause applies as far as is
reasonable. Where this standard states "addition", "modification" or "replacement", the relevant text of
part 1 is to be adapted accordingly.
In this standard, the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– explanatory matter: in smaller roman type.
In the text of the standard the words in bold are defined in clause 3.
Subclauses which are additional to those in part 1 are numbered starting from 101; supplementary
annexes are entitled AA, BB, etc.
The committee has decided that this publication remains valid until 2009-12.
At this date, in accordance with the committee's decision, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

---------------------- Page: 4 ----------------------
61558-2-1 Ed 2/CDV © IEC – 4 –


INTERNATIONAL ELECTROTECHNICAL COMMISSION
_________

SAFETY OF POWER TRANSFORMERS, POWER SUPPLIES,
REACTORS AND SIMILAR PRODUCTS
Part 2-1: Particular requirements for separating transformers and power
supplies incorporating separating transformers
for general applications

1. Scope
Replacement:

This International standard deals with safety aspects such as electrical, thermal and
mechanical safety of separating transformers and power supplies incorporating
separating transformers.

This standard is applicable to transformers and power supplies incorporating electronic
circuits. This standard is not applicable to external circuits and their components
intended to be connected to the input and output terminals or socket-outlets of the
transformers and power supplies.

This part 2-1 of IEC 61558 applies to stationary or portable, single-phase or
polyphase, air-cooled (natural or forced) independent and associated separating
transformers and power supplies, having a rated supply voltage not exceeding
1000 V a.c., a rated supply and internal operating frequency not exceeding 500 Hz,
and a rated output not exceeding:

- 1 kVA for single-phase transformers;
- 5 kVA for polyphase transformers.

This standard is also applicable to separating transformers without limitation of the
rated output subject to an agreement between the the purchaser and the suppl
...

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