SIST EN 61558-2-19:2002

Safety of power transformers, power supply units and similar devices -- Part 2-19: Particular requirements for perturbation attenuation transformers

This International Standard deals with all aspects of safety such as electrical, thermal and mechanical. This part 2-19 of EN 61558 applies to stationary or portable, single-phase or poly-phase, air-cooled (natural or forced), independent or associated, isolating or safety isolating transformers, having a rated supply voltage not exceeding 1 000 V a.c., a rated frequency not exceeding 500 Hz, a rated output not exceeding 10 kVA. Perturbation attenuation transformers are intended to the supply of office machines and the like and have a mid-point lead out in the output circuit in order to attenuate mains borne disturbances. In addition, double or reinforced insulation between circuits required by the installation rules or by the appliance specification is fulfilled by using this transformer. This part 2-19 is intended to be used in conjunction with EN 61558-1 It has the status of a group safety publication in accordance with IEC Guide 104.

Sicherheit von Transformatoren, Netzgeräten und dergleichen -- Teil 2-19: Besondere Anforderungen an Störminderungs-Transformatoren

Sécurité des transformateurs, blocs d'alimentation et dispositifs analogues -- Partie 2-19: Règles particulières pour les transformateurs d'atténuation de perturbations

La présente Norme internationale traite de tous les aspects de la sécurité tels qu'électrique, thermique et mécanique. Cette partie 2-19 de la EN 61558 est applicable aux transformateurs de séparation des circuits et de sécurité, associés ou indépendants, installés à poste fixe ou mobiles, monophasés ou polyphasés, à refroidissement par air (circulation naturelle ou forcée), ayant une tension primaire assignée ne dépassant pas 1000 V en courant alternatif, une fréquence assignée ne dépassant pas 500 Hz, la puissance assignée ne dépassant pas 10 kVA. Les transformateurs d'atténuation de perturbations sont destinés à alimenter des machines de bureau ou analogues, et ont un point milieu raccordé au circuit secondaire, dans le but d'atténuer les perturbations transmises par le réseau. De plus, l'isolation double ou renforcée entre les circuits requis par les règles d'installation ou par la spécification de l'appareil d'utilisation est assurée par l'utilisation de ce transformateur. La présente partie 2-19 est destinée à être utilisée conjointement avec la EN 61558-1. Elle a le statut de publication groupée de sécurité conformément au Guide CEI 104.

Safety of power transformers, power supply units and similar devices - Part 2-19: Particular requirements for perturbation attenuation transformers

General Information

• Status: Withdrawn
• Publication Date: 31-Aug-2002
• Withdrawal Date: 21-Jul-2010
• ICS: 29.180 - Transformers. Reactors
• Technical Committee: I96 - Imaginarni 96
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 21-Jul-2010
• Due Date: 13-Aug-2010
• Completion Date: 22-Jul-2010
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 73/23/EEC - Electrical equipment designed for use within certain voltage limits
• Ref Project: EN 61558-2-19:2001 - Safety of power transformers, power supply units and similar devices - Part 2-19: Particular requirements for perturbation attenuation transformers

Standards Content (Sample)

SLOVENSKI SIST EN 61558-2-19:2002
prva izdaja
STANDARD
september 2002
Safety of power transformers, power supply units and similar devices - Part 2-19:
Particular requirements for perturbation attenuation transformers
ICS 29.180 Referenčna številka
SIST EN 61558-2-19:2002(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 61558-2-19
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2001
ICS 29.180
English version
Safety of power transformers, power supply units and similar devices
Part 2-19: Particular requirements
for perturbation attenuation transformers
(IEC 61558-2-19:2000)
Sécurité des transformateurs, blocs Sicherheit von Transformatoren,
d'alimentation et dispositifs analogues Netzgeräten und dergleichen
Partie 2-19: Règles particulières Teil 2-19: Besondere Anforderungen
pour les transformateurs d'atténuation an Störminderungs-Transformatoren
de perturbations (IEC 61558-2-19:2000)
(CEI 61558-2-19:2000)
This European Standard was approved by CENELEC on 2001-01-01. 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and United Kingdom.
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
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61558-2-19:2001 E

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EN 61558-2-19:2001 - 2 -
Foreword
The text of document 96/147/FDIS, future edition 1 of IEC 61558-2-19, prepared by IEC TC 96, Small
power transformers, reactors and power supply units: Safety requirements, was submitted to the
IEC-CENELEC parallel vote and was approved by CENELEC as EN 61558-2-19 on 2001-01-01.
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) 2001-10-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-01-01
This part 2-19 is to be used in conjunction with EN 61558-1:1997.
This part 2-19 supplements or modifies the corresponding clauses of EN 61558-1. When a particular
subclause of part 1 is not mentioned in this part 2-19, that subclause applies as far as is reasonable.
Where this part 2-19 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: in roman type;
- test specifications: in italic type;
- notes: in smaller roman type.
The words in bold in the text of the standard are defined in clause 3.
Subclauses, tables or figures which are additional to those in part 1 are numbered starting from 101.
___________
Endorsement notice
The text of the International Standard IEC 61558-2-19:2000 was approved by CENELEC as a
European Standard without any modification.
__________

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NORME CEI
INTERNATIONALE IEC
61558-2-19
INTERNATIONAL
Première édition
STANDARD
First edition
2000-06
PUBLICATION GROUPÉE DE SÉCURITÉ
GROUP SAFETY PUBLICATION
Sécurité des transformateurs, blocs d'alimentation
et dispositifs analogues –
Partie 2-19:
Règles particulières pour les transformateurs
d'atténuation de perturbations
Safety of power transformers, power supply units
and similar devices –
Part 2-19:
Particular requirements for perturbation
attenuation transformers
 IEC 2000 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 photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
N
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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61558-2-19  IEC:2000 – 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 . 11
6 Ratings . 11
7 Classification .13
8 Marking and other information . 13
9 Protection against accessibility to hazardous live parts . 15
10 Change of input voltage setting . 17
11 Output voltage and output current under load . 17
12 No-load output voltage . 17
13 Short-circuit voltage . 19
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 dielectric strength. 19
19 Construction. 19
20 Components. 25
21 Internal wiring . 25
22 Supply connection and other external flexible cords . 25
23 Terminals for external conductors. 25
24 Provision for protective earthing . 25
25 Screws and connections. 25
26 Creepage distances, clearances and distances through insulation . 27
27 Resistance to heat, abnormal heat, fire and tracking. 27
28 Resistance to rusting. 27
Figure 101 – Protection of the output circuit in case of short circuit . 23
Table 101 – Maximum disconnecting time. 23

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61558-2-19  IEC:2000 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS
AND SIMILAR DEVICES –
Part 2-19: Particular requirements
for perturbation attenuation transformers
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 61558-2-19 has been prepared by IEC technical committee 96:
Small power transformers, reactors and power supply units: safety requirements.
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 upon the following documents:
FDIS Report on voting
96/147/FDIS 96/152/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.
This part 2-19 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.

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61558-2-19  IEC:2000 – 7 –
This part 2-19 supplements or modifies the corresponding clauses in IEC 61558-1, so as to
convert that publication into the IEC standard: Particular requirements for perturbation
attenuation transformers.
When a particular subclause of part 1 is not mentioned in this part 2-19, 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 or figures 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 the contents of this publication will remain unchanged until
2004-12. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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61558-2-19  IEC:2000 – 9 –
SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS
AND SIMILAR DEVICES –
Part 2-19: Particular requirements
for perturbation attenuation transformers
1 Scope
Replacement:
This International Standard deals with all aspects of safety such as electrical, thermal and
mechanical.
This part 2-19 of IEC 61558 applies to stationary or portable, single-phase or poly-phase, air-
cooled (natural or forced), independent or associated, isolating or safety isolating
transformers, having a rated supply voltage not exceeding 1 000 V a.c., a rated frequency
not exceeding 500 Hz, a rated output not exceeding 10 kVA. Perturbation attenuation
transformers are intended to the supply of office machines and the like and have a mid-point
lead out in the output circuit in order to attenuate mains borne disturbances.
In addition, double or reinforced insulation between circuits required by the installation rules
or by the appliance specification is fulfilled by using this transformer.
NOTE 1 Connection of an appliance via transformers of the kind referred to here does not imply that the
requirements for this appliance are allowed to be less stringent.
Perturbation attenuation isolating transformers:
– have a no-load output voltage and a rated output v
...