International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 62040-1:2008
Title Uninterruptible power systems (UPS) - Part 1: General and safety requirements for UPS
Project Number 20999
Abstract/Scope IEC 62040-1:2008 applies to uninterruptible power systems (UPS) with an electrical energy storage device in the d.c. link. It is used with IEC 60950-1, which is referred to in this standard as 'RD' (reference document). It is applicable to UPS which are movable, stationary, fixed or for building-in, for use in low-voltage distribution systems and intended to be installed in any operator accessible area or in restricted access locations as applicable. It specifies requirements to ensure safety for the operator and layman who may come into contact with the equipment and, where specifically stated, for the service person. It cancels and replaces the first edition of IEC 62040-1-1, published in 2004 and IEC 62040-1-2, published in 2004 and constitutes a technical revision. This standard merges all requirements of previous IEC 62040-1-1 and IEC 62040-1-2, with the addition of the following: - update of normative references including IEC 60950-1 as Reference Document (RD); - harmonization and alignment with current world recognized best practices; - enhancement of backfeed protection, definition of ground-fault, revision of temperature rise tables and of hydrogen concentration in battery compartments. The contents of the corrigendum of September 2008 have been included in this copy.


Current Stage code 6060
Current Stage code date 2008-11-27
Current Stage code deadline 2009-06-01
Deadline date for vote  


Directive(s) LVD (2006/95/EC)
Order Voucher  


IEC Technical Body IEC/SC 22H
Reference Document IEC 62040-1:2008 (EQV) + corrigendum Sep. 2008 (EQV)
ICS 29.200 - Rectifiers. Convertors. Stabilized power supply
Keywords UPS; Uninterruptible; Power system; Safety
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2008-11-27 2009-06-01 export to doc file  EN  FR  DE
5099 2008-09-01 2008-11-01  
5061 2008-06-26 2008-09-01  
5060 2008-04-23 2008-05-07 export to doc file  EN
5020 2008-02-15 2008-04-18  
3090 2007-06-08 2007-07-31  
5060 2007-04-23 2007-05-07 export to doc file  EN
5020 2006-11-17 2007-04-20  
1090 2006-11-14 2006-11-17  

Implementation Dates

date of Ratification (DOR) (1) 2008-09-01
date of Availability (DAV) (2) 2008-11-27
date of Announcement (DOA) (3) 2008-12-01
date of Publication (DOP) (4) 2009-06-01
date of Withdrawal (DOW) (5) 2011-09-01


Supersedes EN 62040-1-1:2003
EN 62040-1-1:2003/corrigendum Aug. 2004
EN 62040-1-2:2003
EN 62040-1-2:2003/corrigendum Aug. 2004
Superseded by  
Normative reference (6) IEC 60364-4-42:2001
EN 60529:1991
corr. May 1993
EN 60664-1:2007
IEC/TR 60755:2008
EN 60950-1:2006
EN 61000-2-2:2002
EN 61008-1:2004
EN 61009-1:2004
corr. July 2006
EN 62040-2:2006
corr. November 2006
EN 62040-3:2001
IEC 60417-DB:2002

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.