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



Reference EN 62040-1:2008/A1:2013
Title Uninterruptible power systems (UPS) - Part 1: General and safety requirements for UPS
Project Number 23947
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 2013-05-17
Current Stage code deadline 2013-11-14
Deadline date for vote  


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


IEC Technical Body IEC/SC 22H
Reference Document IEC 62040-1:2008/A1:2013 (EQV)
ICS 29.200 - Rectifiers. Convertors. Stabilized power supply
Keywords UPS; Uninterruptible; Power system; Safety
Note 2013-01-29: Publication editing allocated to
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2013-05-17 2013-11-14 export to doc file  EN  FR  DE
5099 2013-02-14 2013-03-14  
5060 2012-12-03 2012-12-24 export to doc file  EN
5020 2012-09-28 2012-11-30  
3090 2012-09-25 2012-09-28  
5060 2012-05-29 2012-06-19 export to doc file  EN
5020 2011-12-23 2012-05-25  
1090 2011-12-20 2011-12-23  

Implementation Dates

date of Ratification (DOR) (1) 2013-02-14
date of Availability (DAV) (2) 2013-05-17
date of Announcement (DOA) (3) 2013-08-17
date of Publication (DOP) (4) 2013-11-17
date of Withdrawal (DOW) (5) 2016-02-14


Superseded by  
Normative reference (6) EN 61439-1:2011

(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.