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



Reference EN 60422:2006
Title Mineral insulating oils in electrical equipment - Supervision and maintenance guidance
Project Number 16211
Abstract/Scope Gives guidance on the supervision and maintenance of the quality of the insulating oil in electrical equipment. This standard is applicable to mineral insulating oils, originally supplied conforming to EN 60296, and used in transformers, switchgear and other electrical apparatus where oil sampling is reasonably practicable and where the normal operating conditions specified in the equipment specifications apply. This standard assists the power equipment operator to evaluate the condition of the oil and maintain it in a serviceable condition. It also provides a common basis for the preparation of more specific and complete local codes of practice. This standard includes recommendations on tests and evaluation procedures and outlines methods for reconditioning and reclaiming oil and the decontamination of oil contaminated with PCB. NOTE The condition monitoring of electrical equipment, for example by analysis of dissolved gases, furanic compounds or other means is outside the scope of this standard. The main changes with regard to the previous edition are as follows: This standard has been revised to take into account changes in oil and equipment technology and to have due regard for the best practices currently in use world-wide. The action limits for all oil tests have been revised and changes made where necessary to enable users to use current methodology and comply with requirements and regulations affecting safety and environmental aspects. This guidance incorporates changes introduced in associated standards since the publication of the second edition.


Current Stage code 6060
Current Stage code date 2006-05-12
Current Stage code deadline 2007-02-01
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/TC 10
Reference Document IEC 60422:2005 (EQV)
ICS 29.040.10 - Insulating oils
29.130 - Switchgear and controlgear
Keywords Insulation; Oil; Mineral; Supervision; Maintenance
Note D127/043: Follow-up of D126/021 noted - No NWI should be introduced for improvement of EN 60422:2006 * Superseded by EN 60422:2013
Special National Condition(s)  


Categories - Aspects
Product Life Cycle
All Resource use - Oil Use, Recovery, Disposal B2B, B2C
All Hazardous substances - PCA Use not covered, Recovery not covered, Disposal not covered B2B not covered, B2C not covered
All Hazardous substances - PCB Use, Recovery, Disposal B2B, B2C
4 Hazardous substances - PCB Use, Disposal B2B


Deadline Date
6060 2006-05-12 2007-02-01 export to doc file  EN  FR  DE
5099 2006-04-04 2006-06-04  
5091 2005-11-01 2006-04-04  
5062 2005-11-01 2005-12-06  
5061 2005-09-27 2005-11-01  
5020 2005-07-15 2005-09-16  
4099 2004-11-19 2004-12-17  
4020 2004-02-20 2004-07-23  
3099 2004-02-17 2004-02-20  

Implementation Dates

date of Ratification (DOR) (1) 2006-04-04
date of Availability (DAV) (2) 2006-05-12
date of Announcement (DOA) (3) 2006-08-01
date of Publication (DOP) (4) 2007-02-01
date of Withdrawal (DOW) (5) 2009-05-01


Superseded by EN 60422:2013
Normative reference (6) ASTM D971-99a:2004
ISO 2049:1996
ISO 2719:1988
ISO 3016:1974
ISO 3104:1994
ISO 3675:1998
EN 60156:1995
EN 60247:2004
EN 60296:2004
corr. September 2004
IEC 60475:1974
HD 415 S1:1981
EN 60814:1997
IEC 60970:1989
EN 61125:1993
EN 61619:1997
EN 62021-1:2003

(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.