PD IEC TS 62271-304:2019 - High-voltage switchgear and controlgear. Classification of indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV related to the use in special service conditions with respect to condensation and pollution

PD IEC TS 62271-304:2019

High-voltage switchgear and controlgear. Classification of indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV related to the use in special service conditions with respect to condensation and pollution

Status : Current   Published : June 2019

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IEC TS 62271-304:2019 applies to indoor enclosed switchgear and controlgear complying with IEC 62271-200 and IEC 62271-201, intended to be used in special service conditions with respect to condensation and pollution deviating from the normal service conditions specified in IEC 62271-1.




The test detailed in this document has been designed primarily to classify the electrical insulation performance of equipment having high-voltage electrical insulation exposed to indoor service conditions, mainly in presence of condensation. The assessment of mechanical components, such as mechanisms, interlocks and enclosure is also considered.


This second edition cancels and replaces the first edition published in 2008. This edition constitutes a technical revision.



This edition includes the following significant technical changes with respect to the previous edition:



a) the description of the several service conditions under condensation and pollution;



b) the classification of enclosed switchgear and controlgear, according to the testing procedure does not cover polluted service conditions PL and PH;



c) a wider description in Annex B of typical indoor environments based on ISO/IEC standards;



d) a new Annex C giving guidance on precautions to improve indoor operating conditions;



e) a new Annex D dedicated to the optional items such as records of mechanical characteristics;



f) a new Annex E, giving additional combinations of environments with condensation and pollution, as well as a proposal of testing procedure of ageing test, is provided to create experience on correlation between ageing effects in laboratory and ageing effects at site conditions.




Standard NumberPD IEC TS 62271-304:2019
TitleHigh-voltage switchgear and controlgear. Classification of indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV related to the use in special service conditions with respect to condensation and pollution
StatusCurrent
Publication Date14 June 2019
Normative References(Required to achieve compliance to this standard)IEC 62271-1:2017, IEC 60060-1:2010, IEC 62271-200, IEC 62271-201, IEC 60721-3-3, IEC TS 60815-1
Informative References(Provided for Information)IEC TR 60932, IEC 60505, IEC 60507, IEC 60068-2-78, IEC 60721-2-5, ISO 9223:2012, IEC 60050-441:1984
ReplacesDD CLC/TS 62271-304:2008
International RelationshipsIEC TS 62271-304:2019
DescriptorsPollution, Indoor electric equipment, Switchgear, Rated voltage, Electrical equipment, Electric control equipment, Protected electrical equipment, Classification systems, Condensation, Testing conditions, Environment (working), Insulating enclosures, High-voltage equipment
ICS29.130.10
Title in FrenchAppareillage à haute tension Classification de l’appareillage d’intérieur sous enveloppe pour tensions assignées supérieures à 1 kV et jusqu’à 52 kV inclus relatives à l’utilisation dans des conditions spéciales de service en ce qui concerne la condensation et la pollution
CommitteePEL/17
ISBN978 0 580 95499 3
PublisherBSI
FormatA4
DeliveryYes
Pages30
File Size1.207 MB
Price£182.00


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