SIST EN 61558-2-13:2000

SLOVENSKI STANDARD
SIST EN 61558-2-13:2000
01-junij-2000
Safety of power transformers, power supply units and similar devices - Part 2-13:
Particular requirements for auto-transformers for general use
Safety of power transformers, power supply units and similar devices -- Part 2-13:
Particular requirements for auto-transformers for general use
Sicherheit von Transformatoren, Netzgeräten und dergleichen -- Teil 2-13: Besondere
Anforderungen an Spartransformatoren für allgemeine Anwendungen
Sécurité des transformateurs, blocs d'alimentation et analogues -- Partie 2-13: Règles
particulières pour les autotransformateurs pour usage général
Ta slovenski standard je istoveten z: EN 61558-2-13:2000
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
SIST EN 61558-2-13:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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NORME CEI
INTERNATIONALE IEC
61558-2-13
INTERNATIONAL
Première édition
STANDARD
First edition
1999-10
PUBLICATION GROUPÉE DE SÉCURITÉ
GROUP SAFETY PUBLICATION
Sécurité des transformateurs, blocs d'alimentation
et dispositifs analogues –
Partie 2-13:
Règles particulières pour les autotransformateurs
pour usage général
Safety of power transformers, power supply units
and similar devices –
Part 2-13:
Particular requirements for auto-transformers
for general use
 IEC 1999 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photo-copie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
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Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
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PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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61558-2-13 © IEC:1999 3
CONTENTS
Page
FOREWORD . 5
Clause
 1 Scope . 9
 2 Normative references . 11
 3 Definitions. 11
 4 General requirements. 11
 5 General notes on tests . 13
 6 Ratings . 13
 7 Classification . 13
 8 Marking and other information . 15
 9 Protection against accessibility to hazardous live parts . 15
10 Change of input voltage setting . 15
11 Output voltage and output current under load . 15
12 No-load output voltage . 17
13 Short-circuit voltage . 17
14 Heating . 19
15 Short-circuit and overload protection . 19
16 Mechanical strength . 19
17 Protection against harmful ingress of dust, solid objects and moisture . 19
18 Insulation resistance and electric strength . 19
19 Construction. 19
20 Components. 21
21 Internal wiring . 21
22 Supply connection and other external flexible cables or cords . 21
23 Terminals for external conductors. 21
24 Provision for protective earthing . 21
25 Screws and connections. 23
26 Creepage distances, clearances and distances through insulation . 23
27 Resistance to heat, abnormal heat, fire and tracking. 23
28 Resistance to rusting. 23
Annexes . 25

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61558-2-13 © IEC:1999 5
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS
AND SIMILAR DEVICES –
Part 2-13: Particular requirements for auto-transformers
for general use
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 specifications, 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 61558-2-13 has been prepared by IEC technical committee 96:
Small power transformers, reactors and power supply units: Safety requirements.
Future standards in this series will carry the new general 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:
FDIS Report on voting
96/131/FDIS 96/137/RVD
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.

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– –
61558-2-13 © IEC:1999 7
The committee has decided that this publication remains valid until 2005-06.
At this date, in accordance with the committee’s decision, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
This part 2-13 is intended to be used in conjunction with IEC 61558-1. It was established on the
basis of the first edition (1997) of that standard.
This part 2-13 supplements or modifies the corresponding clauses in IEC 61558-1, so as to
convert that publication into the IEC standard: Particular requirements for auto-transformers.
This standard replaces Chapter III of IEC 60989.
When a particular subclause of part 1 is not mentioned in this part 2-13, 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.

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61558-2-13 © IEC:1999 9
SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS
AND SIMILAR DEVICES –
Part 2-13: Particular requirements for auto-transformers
for general use
1 Scope
Replacement:
This International Standard deals with all aspects of safety such as electrical, thermal and
mechanical.
This part 2-13 of IEC 61558 applies to stationary or portable, single-phase or polyphase, air-
cooled (natural or forced), independent or associated auto-transformers, having a rated
supply voltage not exceeding 1 000 V a.c., a rated frequency not exceeding 500 Hz.
The core p
...