Low-voltage switch mode power supplies - Part 7: Safety requirements

Published date

16-03-2018

Publisher

European Committee for Standards - Electrical

FOREWORD
INTRODUCTION
0 Principles of safety
1 Scope
2 Normative references
3 Terms and definitions
4 Protection against hazards
5 Test requirements
6 Information and marking requirements
7 Components
Annex A (normative) - Additional information for
        protection against electric shock
Annex B (informative) - Considerations for the
        reduction of the pollution degree
Annex C (informative) - Symbols referred to in IEC 62477-1
Annex D (normative) - Evaluation of clearance and
        creepage distances
Annex E (informative) - Altitude correction for clearances
Annex F (normative) - Clearance and creepage distance
        determination for frequencies greater than 30 kHz
Annex G (informative) - Cross-sections of round conductors
Annex H (informative) - Guidelines for RCD compatibility
Annex I (informative) - Examples of overvoltage category reduction
Annex J (informative) - Burn thresholds for touchable surfaces
Annex K (informative) - Table of electrochemical potentials
Annex L (informative) - Measuring instrument for touch
        current measurements
Annex M (informative) - Test probes for determining access
Annex AA (normative) - Addition Insulated winding wires
         for use without interleaved insulation
Annex AB (informative) - Minimum and maximum
         cross-section of copper conductors suitable for
         connection to terminals for external conductors
Annex AC (normative) - DC power and distribution equipment
Annex AD (informative) - Addition Examples of protective
         measures according to IEC 61204-7 clause 4.4.1 - 4.4.5
         for protection against electrical shock
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their corresponding
         European publications
Annex ZZ (informative) - Relationship between this
         European Standard and the safety objectives of
         Directive 2014/35/EU [2014 OJ L96] aimed to
         be covered

IEC 61204-7:2016 is available as IEC 61204-7:2016 EXV which includes the provisions of the general rules dealt with in IEC 62477-1:2012.

IEC 61204-7:2016 specifies the safety requirements for switch mode power supply (SMPS) units supplied by source voltages up to 1 000 V AC or 1 500 V DC providing AC and/or DC output(s), except inverter output(s) establishing AC mains. This product standard covers both stand-alone and component SMPS as defined in this document. DC power and distribution equipment which provides, distributes, monitors, and controls isolated secondary circuit power to other equipment typically used in information and communication technology equipment installations. This edition includes the following significant technical changes with respect to the previous edition:

a) use of IEC 62477-1 as reference document, instead of IEC 60950-1;

b) modification of the title by deleting the wording "DC output-" and adding "switch mode".

Committee	CLC/TC 22X
DevelopmentNote	Supersedes & Redesignates EN 61204-7. (03/2018)
DocumentType	Standard
PublisherName	European Committee for Standards - Electrical
Status	Current
Supersedes	EN 61204-7:2006/A11:2009 EN 61204-7:2006

Standards	Relationship
BS EN IEC 61204-7:2018	Identical
OVE EN IEC 61204-7:2019	Identical
CEI EN IEC 61204-7 : 2018	Identical
DS/EN IEC 61204-7:2018	Identical
SN EN IEC 61204-7: 2018	Identical
DIN EN IEC 61204-7 : 2018-12	Identical
VDE 0557-7:2018	Identical
I.S. EN IEC 61204-7:2018	Identical
NEN-EN-IEC 61204-7:2018	Identical
SS-EN IEC 61204-7:2018	Identical
PN-EN IEC 61204-7:2018	Identical
IEC 61204-7:2016 EXV	Identical
NF EN IEC 61204-7:2018	Identical
UNE-EN IEC 61204-7:2018	Identical

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