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



Reference CLC/TR 50453:2007
Title Evaluation of electromagnetic fields around power transformers
Project Number 16657
Abstract/Scope This Report provides guidance for the evaluation of electromagnetic fields around power transformers. This Report applies to power transformers covered by EN 60076 series with the following characteristics: - apparent rating P: 5 kVA  P  1 000 MVA - insulating level, according to EN 60076-3: • high voltage winding: Um from 7,2 kV to 525 kV • low voltage winding: Um up to 525 kV Reactors are excluded from the present Report. Continuous conducted and radiated emissions are considered for power transformers operating under nominal working conditions of voltage and current. Fault conditions and low occurrence transient events, such as - short-circuits, - lightning and switching transients, - overloads (inrush currents, etc.), - overvoltages, - tap-changer operations, are not considered as normal working conditions. Immunity conditions are considered to ensure the power transformer operates as intended in its normal working environment. The immunity capability of the power transformer is considered for steady state and transient working conditions.


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


Order Voucher BC-01-87


IEC Technical Body IEC/TC 14
Reference Document  
ICS 29.020 - Electrical engineering in general
29.180 - Transformers. Reactors
Keywords Electromagnetic; Transformer; Power transformer
Note Supersedes R014-001:1999 * Corrigendum to EN (FR version) issued on 2007-12-21
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2007-05-16   export to doc file  EN
export to doc file  FR
5099 2006-01-14 2006-05-14  
5060 2006-01-14 2006-01-31 export to doc file  EN
5020 2005-10-14 2006-01-13  
1090 2004-12-07 2005-06-07  

Implementation Dates

date of Ratification (DOR) (1) 2006-01-14
date of Availability (DAV) (2) 2007-05-16
date of Announcement (DOA) (3) -
date of Publication (DOP) (4) -
date of Withdrawal (DOW) (5) -


Supersedes R014-001:1999
Superseded by  
Normative reference (6) IEC 60050-161:1990
EN 60076-1:1997
EN 61000-2-2:2002

(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.