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



Reference EN 60255-27:2014
Title Measuring relays and protection equipment - Part 27: Product safety requirements
Project Number 24332
Abstract/Scope IEC 60255-27:2013 describes the product safety requirements for measuring relays and protection equipment having a rated a.c. voltage up to 1 000 V with a rated frequency up to 65 Hz, or a rated d.c. voltage up to 1 500 V. Above these limits, IEC 60664-1 is applicable for the determination of clearance, creepage distance and withstand test voltage. This standard details essential safety requirements to minimize the risk of fire and hazards caused by electric shock or injury to the user. This new edition includes the following significant technical changes with respect to the previous edition: - the removal of tables and diagrams which are from other standards and referring instead directly to the source standard; - all aspects of IEC 60255-5 have been covered and this standard will be withdrawn.


Current Stage code 6060
Current Stage code date 2014-03-28
Current Stage code deadline 2014-08-19
Deadline date for vote  


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


IEC Technical Body IEC/TC 95
Reference Document IEC 60255-27:2013 (EQV)
ICS 29.120.70 - Relays
Keywords Relay; Measuring relay; Protection equipment; Product safety
Note 2013-10-22 - Publication editing allocated to * Will supersede EN 60255-27:2005
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2014-03-28 2014-08-19 export to doc file  EN  FR  DE
5099 2013-11-19 2013-12-17  
5060 2013-09-16 2013-10-07 export to doc file  EN
5020 2013-07-12 2013-09-13  
3090 2013-07-09 2013-07-12  
5060 2012-12-17 2013-01-07 export to doc file  EN
5020 2012-07-13 2012-12-14  
1090 2012-07-10 2012-07-13  

Implementation Dates

date of Ratification (DOR) (1) 2013-11-19
date of Availability (DAV) (2) 2014-03-28
date of Announcement (DOA) (3) 2014-06-28
date of Publication (DOP) (4) 2014-09-28
date of Withdrawal (DOW) (5) 2016-11-19


(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.