SIST EN 61204-7:2007
(Main)Low voltage power supplies, d.c. output -- Part 7: Safety requirements
Low voltage power supplies, d.c. output -- Part 7: Safety requirements
This part of IEC 61204 specifies the safety requirements for POWER SUPPLY units providing DC output(s) with or without auxiliary a.c. output(s) operating from a.c. or d.c. source voltages up to 600 V a.c. or 1 000 V d.c. (See exceptions in 1.1.3). This product standard covers both STAND-ALONE and COMPONENT POWER SUPPLY units as defined in this document. POWER SUPPLY units, which comply with the main body of this standard, satisfy the requirements of POWER SUPPLY units for use in or with IT equipment normally covered by IEC 60950:1999 and/or IEC 60950-1:2001. POWER SUPPLY units will also comply with the appropriate standard or application requirements given below if they also meet the additional requirements of the appropriate annex. PS-A Measurement, control and laboratory equipment normally.
Stromversorgungsgeräte für Niederspannung mit Gleichstromausgang - Teil 7: Sicherheitsanforderungen
Alimentations basse tension, sortie continue - Partie 7: Exigences de sécurité
EC
Nizkonapetostni napajalniki, enosmerni (d.c.) izhod - 7. del: Varnostne zahteve (IEC 61204-7:2006)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 61204-7:2007
01-marec-2007
Nizkonapetostni napajalniki, enosmerni (d.c.) izhod - 7. del: Varnostne zahteve
(IEC 61204-7:2006)
Low voltage power supplies, d.c. output -- Part 7: Safety requirements
Stromversorgungsgeräte für Niederspannung mit Gleichstromausgang - Teil 7:
Sicherheitsanforderungen
Alimentations basse tension, sortie continue - Partie 7: Exigences de sécurité
Ta slovenski standard je istoveten z: EN 61204-7:2006
ICS:
29.200 8VPHUQLNL3UHWYRUQLNL Rectifiers. Convertors.
6WDELOL]LUDQRHOHNWULþQR Stabilized power supply
QDSDMDQMH
SIST EN 61204-7:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 61204-7:2007
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SIST EN 61204-7:2007
EUROPEAN STANDARD
EN 61204-7
NORME EUROPÉENNE
November 2006
EUROPÄISCHE NORM
ICS 29.200
English version
Low voltage power supplies, d.c. output
Part 7: Safety requirements
(IEC 61204-7:2006)
Alimentations basse tension, Stromversorgungsgeräte
sortie continue für Niederspannung
Partie 7: Exigences de sécurité mit Gleichstromausgang
(CEI 61204-7:2006) Teil 7: Sicherheitsanforderungen
(IEC 61204-7:2006)
This European Standard was approved by CENELEC on 2006-10-01. 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, 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.
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
© 2006 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
-
Ref. No. EN 61204-7:2006 E
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SIST EN 61204-7:2007
EN 61204-7:2006 - 2 -
Foreword
The text of document 22E/101/FDIS, future edition 1 of IEC 61204-7, prepared by SC 22E, Stabilized
power supplies, of IEC TC 22, Power electronic systems and equipment, was submitted to the
IEC-CENELEC parallel vote and was approved by CENELEC as EN 61204-7 on 2006-10-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2007-07-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2009-10-01
with the EN have to be withdrawn
This standard does not follow the rules for structuring European Standards as given in Part 3 of the
CEN/CENELEC Internal Regulations because of the varied requirements which can apply to power
supplies. It assumes that all power supplies are required to meet either EN 60950:2000
(IEC 60950:1999, mod.) and/or EN 60950-1:2001 (IEC 60950-1:2001, mod.). In addition power
supplies may also have to meet the requirements of other standards dependent on the application. To
satisfy this need it was decided that all power supplies shall meet EN 60950:2000 and/or
EN 60950-1:2001 as described in the main body of this standard. The differences between these
requirements and those of other standards can then be optionally applied by applying any or all of the
appropriate annexes. This was done to avoid confusion.
The annexes of this standard are clearly described in 1.1.1.
EN 61204 (IEC 61024) consists of the following parts, under the general title Low voltage power
supplies, DC output:
Part 1: Reserved for future use.
1)
Part 2: Performance characteristics1
Part 3: Electromagnetic compatibility (EMC)
1)
Part 4: Tests other than EMC
Part 5: Reserved for future use.
Part 6: Requirements for low-voltage power supplies of assessed performance
Part 7: Safety requirements
This standard should be read in conjunction with EN 60950:2000 and/or EN 60950-1:2001.
It makes reference to the standard EN 60950:2000 and/or EN 60950-1:2001 in the form of “clause
number/RD”. In this context, “RD” means “Reference Document” i.e. EN 60950:2000 and/or
EN 60950-1:2001. Unless otherwise specified, RD means that both documents apply. However, it is
only necessary to apply one or other of these standards. Wherever the word equipment occurs in this
reference document, this means POWER SUPPLY. The annexes of EN 60950:2000 and/or
EN 60950-1:2001 are also referred to by means of "RD" where these are specific references,
otherwise these annexes apply as detailed in the clauses of these standards referred to in this
standard.
1)
Under consideration
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SIST EN 61204-7:2007
- 3 - EN 61204-7:2006
In this standard, the following print types are used:
– Requirements proper and normative annexes: in roman type.
– Compliance statements and test specifications: in italic type.
– Notes and other informative matter: in smaller roman type.
– Normative conditions within tables: in smaller roman type.
– Terms that are defined in 1.2: SMALL CAPITALS.
Annexes ZA and ZB have been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61204-7:2006 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Annex PS-Q, Bibliography, the following notes have to be added for the
standards indicated:
IEC 60601-1 NOTE Harmonized as EN 60601-1:1990 (not modified).
IEC 60601-1 NOTE Harmonized as EN 60601-1:2006 (not modified).
IEC 60950 NOTE Harmonized as EN 60950:2000 (modified).
IEC 60950-1 NOTE Harmonized as EN 60950-1:2001 (modified).
__________
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SIST EN 61204-7:2007
EN 61204-7:2006 - 4 -
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 60065 (mod) 2001 Audio, video and similar electronic EN 60065 2002
apparatus - Safety requirements + corr. March 2006
IEC 60146-1-1 1991 Semiconductor convertors - General EN 60146-1-1 1993
requirements and line commutated
convertors -
Part 1-1: Specifications of basic
requirements
2)
IEC 60364-4-41 2001 Electrical installations of buildings - – –
Part 4-41: Protection for safety - Protection
against elctric shock
IEC 60417 data- Graphical symbols for use on equipment –
–
base
IEC 61347-2-2 2000 Lamp controlgear - EN 61347-2-2 2001
Part 2-2: Particular requirements for d.c. or + corr. July 2003
a.c. supplied electronic step-down
convertors for filament lamps
IEC 61558-1 2005 Safety of power transformers, power EN 61558-1 2005
supplies, reactors and similar products - + corr. August 2006
Part 1: General requirements and tests
IEC 62040-1-1 2002 Uninterruptible power systems (UPS) -
+ corr. December 2002 Part 1-1: General and safety requirements EN 62040-1-1 2003
+ corr. February 2004 for UPS used in operator access areas + corr. August 2004
2)
IEC 60364-4-41:2001 is superseded by IEC 60364-4-41:2005, which has been harmonized with common
modifications as HD 60364-4-41:2006
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SIST EN 61204-7:2007
- 5 - EN 61204-7:2006
Annex ZB
(normative)
Special national conditions
Special national condition: National characteristic or practice that cannot be changed even over a
long period, e.g. climatic conditions, electrical earthing conditions.
NOTE If it affects harmonization, it forms part of the European Standard / Harmonization Document.
For the countries in which the relevant special national conditions apply these provisions are
normative, for other countries they are informative.
Clause Special national condition
2.9.5 Denmark
When using this method of protection it is allowed that 230 V socket-outlet is used either
with or without earth according to The Danish Heavy Current Regulation part 107-2-D1.
• On transportable inverters, portable socket-outlets according to e.g. standard sheets
DK 1-3a, DKA 1-3a or DKA 1-4a shall be used.
• On inverters for fixed installation it is allowed to use socket-outlets for fixed
installation, according to e.g. standard sheets DK 1-1a (built together with a switch) or
DK 1-1b.
If there is no reinforced insulation between the SELV circuit and the 230 V side, it shall be
described which precautions have been taken as an alternative to reach the same level of
safety. It can for example be the following:
• The inverter’s metal enclosure has been connected to minus on the SELV side by the
manufacturer. The inverter is in this case only allowed with a 230 V socket-outlet for
class II appliances (The Danish Heavy Current Regulation part 107-2-D1, standard
sheet DKA 1-4a).
This method of protection gives equipotential bonding between exposed conductive
parts. When using socket-outlet for class II equipment it is also prevented that a class
I appliance can be connected, without connection between protective earth and the
enclosure of the appliance (e.g. an appliance with Schuko plug).
It must appear from the accompanying instructions that it is prohibited and can be
connected with risk of electric shock to connect an appliance that is not double
insulated by for instance using an illegal extension cord or an illegal supply cord on a
class I appliance.
It shall be ensured that the inverter can withstand the influences and external conditions it
may be exposed to. Since no safety standard exists, which specifically covers these
products and their special use, a risk assessment must be made regarding electrical,
thermal and mechanical safety of the product.
__________
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SIST EN 61204-7:2007
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SIST EN 61204-7:2007
NORME CEI
INTERNATIONALE
IEC
61204-7
INTERNATIONAL
Première édition
STANDARD
First edition
2006-07
Alimentations basse tension,
sortie continue –
Partie 7:
Exigences de sécurité
Low-voltage power supplies,
d.c. output –
Part 7:
Safety requirements
IEC 2006 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 any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
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Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
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PRICE CODE
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Pour prix, voir catalogue en vigueur
For price, see current catalogue
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SIST EN 61204-7:2007
61204-7 IEC:2006 – 3 –
CONTENTS
FOREWORD.9
0 Principles of Safety .13
1 General .13
1.1 Scope.13
1.2 Definitions .15
1.3 General requirements.19
1.4 General conditions for tests.19
1.5 Components .21
1.6 Power interface .23
1.7 Marking and instructions.23
2 Protection from hazards .25
2.1 Protection from electric shock and energy hazards.25
2.2 SELV circuits.27
2.3 TNV circuits.27
2.4 Limited current circuits .27
2.5 Limited power sources.27
2.6 Provisions for earthing and bonding .27
2.7 Overcurrent and earth fault protection in primary circuits.29
2.8 Safety interlocks.29
2.9 Electrical insulation .29
2.10 Clearances, creepage distances and distances through insulation.29
3 Wiring, connections and supply .29
4 Physical requirements .29
5 Electrical requirements and simulated abnormal conditions .29
5.1 Touch current and protective conductor current.29
5.2 Electric strength .29
5.3 Abnormal operating and fault conditions.29
6 Connection to telecommunication networks .31
7 Connection to a cable distribution system.31
Annex PS-A (normative) Requirements for power supply units for use in electrical
equipment for measurement, control and laboratory use .35
Annex PS-B (normative) Requirements for power supply units for use in medical
electrical equipment.135
Annex PS-C (informative) Reserved for future use.137
Annex PS-D (normative) Requirements for power supply units used in or with audio,
video and similar electronic apparatus .139
Appendix PS-D.A (normative) Additional requirements for STAND-ALONE POWER
Annex PS-E (normative) DC power and distribution equipment .287
Annex PS-F (informative) Guidance on marking and installation instructions for proper
selection of POWER SUPPLIES for use in INFORMATION TECHNOLOGY EQUIPMENT .325
Annex PS-P (normative) Normative references .329
Annex PS-Q (informative) Bibliography .331
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SIST EN 61204-7:2007
61204-7 IEC:2006 – 5 –
Figure PS-A1 – Maximum duration of short-term temporary accessible voltages in
single fault condition (see PS-A.6.3.2 a)) .89
Figure PS-A6 – Baffle .121
Figure PS-A.A4 – Current measuring circuit for wet contact .129
Figure PS-D4 – Test hook.259
Figure PS-D6 – Dielectric strength test instrument.259
Figure PS-D7 – Test voltages .261
Figure PS-D10 – Minimum clearances and creepage distances on printed boards .263
Figure PS-D13 – Distances from a potential ignition source and an example for the
design of barriers.263
Figure PS-E.1.100A – Resistance and short circuit calculations.295
Table 1A.101 – Marking and installation instruction information .25
Table 1A.100 – Separation of ringing circuits from other circuits .27
.Table PS-A 100 – Comparison of IEC 61010-1:2001 and IEC 61204-7.35
Table PS-A1 – Symbols .75
Table PS-A2 – Tightening torque for screw assemblies.93
Table PS-A5 – CLEARANCES for circuits derived from mains circuits .99
Table PS-A6 – CLEARANCE values for the calculation of PS-A.6.7.3.2 .101
Table PS-A7 – CREEPAGE DISTANCES .103
Table PS-A9 – Test voltages for basic insulation .109
Table PS-A11 – Physical tests on power supply cords .111
Table PS-A12 – Acceptable perforation of the bottom of an ENCLOSURE .121
Table PS-A15 – Surface temperature limits in NORMAL CONDITION.123
Table PS-A16 – Insulation material of windings .125
Table PS-A.E.1 – Reduction of pollution degree of internal environment through the
use of additional protection .131
Table PS-D100 – Comparison of IEC 60065:2001) with IEC 61204-7 (IEC 60950:1999
and IEC 60950-1:2001).139
Table PS-D3 – Permissible temperature rise of parts of the POWER SUPPLY .193
Table PS-D5 – Test voltages for dielectric strength test and values for insulation
resistance .207
Table PS-D12 – Minimum CLEARANCES and CREEPAGE DISTANCES (enclosed, enveloped
or hermetically sealed constructions) .217
Table PS-D13 – Flammability category related to distance from potential ignition
sources.219
Table PS-D14 – Peak surge current.233
Table PS-D15 – Nominal cross-sectional area to be accepted by terminals.243
Table PS-D17 – Pull force on pins .243
Table PS-D18 – Nominal cross-sectional areas of external flexible cords.245
Table PS-D20 – Torque to be applied to screws .249
Table PS-D21 – Distances from potential ignition sources and consequential
flammability categories .255
Table PS-D.B.1 – Separation of TNV CIRCUITS .269
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SIST EN 61204-7:2007
61204-7 IEC:2006 – 7 –
Table PS-D.N.1 – Test voltage.283
Table PS-E.2.100 – AC and DC field wiring spacings.305
Table PS-E.2.101 – Minimum acceptable spacings for uninsulated bus bars .307
Table PS-E.4B.101 – Temperature limits .309
Table PS-E.5.101 – Switch test sequences .313
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SIST EN 61204-7:2007
61204-7 IEC:2006 – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE POWER SUPPLIES, DC OUTPUT –
Part 7: Safety requirements
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 Standard IEC 61204-7 has been prepared by subcommittee 22E: Stabilized
power supplies, of IEC technical committee 22: Power electronic systems and equipment.
IEC 61204-7 has the status of a product standard.
The text of this standard is based on the following documents:
FDIS Report on voting
22E/101/FDIS 22E/102/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.
The French version of this standard has not been voted upon.
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SIST EN 61204-7:2007
61204-7 IEC:2006 – 11 –
This standard does not follow the rules for structuring International Standards as given in
Part 2 of the ISO/IEC Directives because of the varied requirements which can apply to power
supplies. It assumes that all power supplies are required to meet either IEC 60950:1999
and/or IEC 60950-1:2001. In addition power supplies may also have to meet the requirements
of other standards dependent on the application. To satisfy this need it was decided that all
power supplies shall meet IEC 60950:1999 and/or IEC 60950-1:2001 as described in the main
body of this standard. The differences between these requirements and those of other
standards can then be optionally applied by applying any or all of the appropriate annexes.
This was done to avoid confusion.
The annexes of this international standard are clearly described in 1.1.1.
IEC 61204 consists of the following parts, under the general title Low voltage power supplies,
DC output:
Part 1: Reserved for future use.
1
Part 2: Performance characteristics
Part 3: Electromagnetic compatibility (EMC)
1
Part 4: Tests other than EMC
Part 5: Reserved for future use.
Part 6: Requirements for low-voltage power supplies of assessed performance
Part 7: Safety Requirements
This standard makes reference to the standard IEC 60950:1999 and/or IEC 60950-1:2001 in
the form of “clause number/RD”. In this context, “RD” means “Reference Document” i.e.
IEC 60950:1999 and/or IEC 60950-1:2001. Unless otherwise specified, RD means that both
documents apply. However, it is only necessary to apply one or other of these standards.
Wherever the word equipment occurs in this reference document, this means POWER SUPPLY.
The annexes of IEC 60950:1999 and/or IEC 60950-1:2001 are also referred to by means of
"RD" where these are specific references, otherwise these annexes apply as detailed in the
clauses of these standards referred to in this standard.
This publication should be read in conjunction with IEC 60950:1999 and/or IEC 60950-1:2001.
In this standard, the following print types are used:
– Requirements proper and normative annexes: in roman type.
– Compliance statements and test specifications: in italic type.
– Notes and other informative matter: in smaller roman type.
– Normative conditions within tables: in smaller roman type.
– Terms that are defined in 1.2: SMALL CAPITALS.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
—————————
1
Under consideration.
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SIST EN 61204-7:2007
61204-
...
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