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



Reference EN 60599:1999/A1:2007
Title Mineral oil-impregnated electrical equipment in service - Guide to the interpretation of dissolved and free gases analysis
Project Number 20607
Abstract/Scope Describes how the concentrations of dissolved gases or free gases may be interpreted to diagnose the condition of oil-filled electrical equipment in service and suggests future action. Applicable to electrical equipment filled with mineral insulating oil and insulated with cellulosic paper or pressboard-based solid insulation. Information about specific types of equipment such as transformers (power, instrument, industrial, railways, distribution), reactors, bushings, switchgear and oil-filled cables is given only as an indication in the application notes. May be applied only with caution to other liquid-solid insulating systems. In any case, the indications obtained should be viewed only as guidance and any resulting action should be undertaken only with proper engineering judgement.


Current Stage code 6060
Current Stage code date 2007-05-16
Current Stage code deadline 2008-02-01
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/TC 10
Reference Document IEC 60599:1999/A1:2007 (EQV)
ICS 17.220.99 - Other standards related to electricity and magnetism
29.040.10 - Insulating oils
29.180 - Transformers. Reactors
Keywords Insulating liquid; Oil; Transformer; Gas analysis
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2007-05-16 2008-02-01 export to doc file  EN  FR  DE
5099 2007-05-01 2007-07-01  
5060 2007-03-26 2007-04-09 export to doc file  EN
5020 2007-01-19 2007-03-23  
3090 2006-10-06 2006-11-30  
5060 2006-08-14 2006-08-28 export to doc file  EN
5020 2006-03-10 2006-08-11  
1090 2006-03-07 2006-03-10  

Implementation Dates

date of Ratification (DOR) (1) 2007-05-01
date of Availability (DAV) (2) 2007-05-16
date of Announcement (DOA) (3) 2007-08-01
date of Publication (DOP) (4) 2008-02-01
date of Withdrawal (DOW) (5) 2010-05-01


Superseded by FprEN 60599:201X
Normative reference (6)  

(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.