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



Reference EN 61221:2004
Title Petroleum products and lubricants - Triaryl phosphate ester turbine control fluids (category ISO-L-TCD) - Specifications
Project Number 15833
Abstract/Scope Specifies the characteristics of unused triaryl phosphate ester fluids for turbine governor controls and other hydraulic systems in electrical power stations. Fluids used in this application are classified under category TCD of ISO 6743-5. The major changes with regard to the first edition concern the need to upgrade the report to an International Standard, taking account of changes to the specification. The changes made include: a) introduction of new tests to define fire resistance, namely the Manifold Ignition and Wick flame persistence tests; b) flame persistence tests; c) introduction of a pour point requirement; d) a change to the Sequence II foaming requirement; e) introduction of a cleanliness requirement; f) introduction of an elastomer compatibility requirement; g) use of ISO test methods equivalent ot the original DIN tests.


Current Stage code 6060
Current Stage code date 2004-10-14
Current Stage code deadline 2005-06-01
Deadline date for vote  


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IEC Technical Body IEC/TC 10
Reference Document IEC 61221:2004 (EQV)
ICS 29.120 - Electrical accessories
75.120 - Hydraulic fluids
Keywords Petroleum product; Lubricant; Triaryl phosphate; Ester turbine; Control fluid
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2004-10-14 2005-06-01 export to doc file  EN
5099 2004-09-01 2004-12-01  
5061 2004-06-28 2004-09-01  
5020 2004-03-12 2004-05-14  
4099 2003-11-21 2004-02-06  
4020 2003-05-23 2003-10-24  
3099 2003-05-20 2003-05-23  

Implementation Dates

date of Ratification (DOR) (1) 2004-09-01
date of Availability (DAV) (2) 2004-10-14
date of Announcement (DOA) (3) 2004-12-01
date of Publication (DOP) (4) 2005-06-01
date of Withdrawal (DOW) (5) 2007-09-01


Supersedes EN 61221:1995
Superseded by  
Normative reference (6) ISO 760:1978
ISO 2592:2000
ISO 3016:1974
ISO 3104:1994
ISO 3170:2004
ISO 3448:1992
ISO 3675:1998
ISO 4259:1992
ISO 4406:1999
ISO 6072:2002
ISO 6247:1998
ISO 6614:1994
ISO 6619:1988
ISO 6743-5:1988
ISO 9120:1997
ISO 11500:1997
ISO 12185:1996
EN_NO 14832:200X
EN_NO 14833:200X
ISO 14935:1998
ISO 15597:2001
ISO 20823:2003
EN 60247:2004
IEC 60978:1989

(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.