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



Reference EN 60034-18-21:2013
Title Rotating electrical machines - Part 18-21: Functional evaluation of insulation systems - Test procedures for wire-wound windings - Thermal evaluation and classification
Project Number 23512
Abstract/Scope IEC 60034-18-21:2012 gives test procedures for the thermal evaluation and classification of insulation systems used or proposed for use in wire-wound alternating current (a.c.) or direct current (d.c.) rotating electrical machines. The test performance of a candidate insulation system is compared to the test performance of a reference insulation system with proven service experience. The main technical changes with regard to the previous edition can be seen in the introduction of some basic statistical methods in the evaluation of comparative data. Moreover, the standard states a simpler use of different test procedures.


Current Stage code 6060
Current Stage code date 2013-03-29
Current Stage code deadline 2013-07-24
Deadline date for vote  


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IEC Technical Body IEC/TC 2
Reference Document IEC 60034-18-21:2012 (EQV)
ICS 29.160 - Rotating machinery
Keywords Machine; Rotating; Insulation; Wirewound winding; Test
Note Supersedes EN 60034-18-21:1994 + A1:1996 + A2:1996
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2013-03-29 2013-07-24 export to doc file  EN  FR  DE
5099 2012-10-24 2012-11-21  
5060 2012-08-20 2012-09-10 export to doc file  EN
5020 2012-06-15 2012-08-17  
3090 2012-02-10 2012-03-31  
5060 2011-09-26 2011-10-17 export to doc file  EN
5020 2011-04-22 2011-09-23  
1090 2011-04-19 2011-04-22  

Implementation Dates

date of Ratification (DOR) (1) 2012-10-24
date of Availability (DAV) (2) 2013-03-29
date of Announcement (DOA) (3) 2013-06-29
date of Publication (DOP) (4) 2013-09-29
date of Withdrawal (DOW) (5) 2015-10-24


(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.