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



Reference CLC/TR 60890:2002
Title A method of temperature-rise assessment by extrapolation for partially type-tested assemblies (PTTA) of low-voltage switchgear and controlgear
Project Number 14755
Abstract/Scope The proposed method is applicable to enclosed PTTA or partitioned sections of PTTA without forced ventilation. It is intended to determine the temperature rise of the air inside the enclosure.


Current Stage code 6060
Current Stage code date 2002-07-30
Current Stage code deadline  
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/SC 17D
Reference Document IEC/TR3 60890:1987 (EQV) + A1:1995 (EQV) + corrigendum Mar. 1988 (EQV)
ICS 29.130.20 - Low voltage switchgear and controlgear
Keywords Switchgear and controlgear; Temperature-rise; Extrapolation; PTTA; LV
Note Supersedes HD 528 S2:1997 * Initially handled by CLC/TC 17D (dormant)
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2002-07-30   export to doc file  EN
5099 2002-07-02 2002-11-02  
5062 2002-02-28 2002-07-02  
5020 2001-10-19 2002-01-18  
1090 2001-09-25 2002-03-25  

Implementation Dates

date of Ratification (DOR) (1) 2002-07-02
date of Availability (DAV) (2) 2002-07-30
date of Announcement (DOA) (3) -
date of Publication (DOP) (4) -
date of Withdrawal (DOW) (5) -


Supersedes HD 528 S2:1997
Superseded by  
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Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn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.