Standard IEC 60255-187-1-ed.1.0 28.7.2021 preview

IEC 60255-187-1-ed.1.0

Measuring relays and protection equipment - Part 187-1: Functional requirements for differential protection - Restrained and unrestrained differential protection of motors, generators and transformers

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STANDARD published on 28.7.2021


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The information about the standard:

Designation standards: IEC 60255-187-1-ed.1.0
Publication date standards: 28.7.2021
SKU: NS-1030811
The number of pages: 418
Approximate weight : 1285 g (2.83 lbs)
Country: International technical standard
Category: Technical standards IEC

The category - similar standards:

Relays

Annotation of standard text IEC 60255-187-1-ed.1.0 :

IEC 60255-187-1:2021 specifies the minimum requirements for functional and performance evaluation of (longitudinal) differential protection designed for the detection of faults in ac motors, generators and transformers. This document also defines how to document and publish performance test results. This document defines the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions. The test methodologies for verifying performance characteristics and accuracy are also included in this document. This document, together with IEC 60255-187-2 and IEC 60255-187-3, cancels and replaces IEC 60255-13. This document includes the following significant technical changes with respect to IEC 60255-13: a) IEC 60255-13 has been significantly revised to follow the common structure of the functional standards for protection relays (IEC 60255-1xx series). IEC 60255-187-1 has been developed to address the restrained and unrestrained differential protection of motors, generators and transformers. The revisions include detailed description of the functions including the performance specification, testing and documentation requirements. The contents of the corrigendum of April 2023 have been included in this copy. IEC 60255-187-1:2021 specifie les exigences minimales relatives a levaluation fonctionnelle et a l’evaluation de la performance de la protection differentielle (longitudinale) concue pour la detection des defauts dans les moteurs a courant alternatif, les generateurs et les transformateurs. Le present document definit egalement comment documenter et publier les resultats des essais de performance.Le present document definit les facteurs dinfluence qui affectent la precision en etat stable et les caracteristiques de performance dans des conditions dynamiques. Les methodologies d’essai permettant de verifier les caracteristiques de performance et la precision sont egalement incluses dans le present document. Le present document, ainsi que l’IEC 60255-187-2 et l’IEC 60255-187-3, annule et remplace l’IEC 60255-13. Le present document inclut les modifications techniques majeures suivantes par rapport a lIEC 60255-13: a. L’IEC 60255-13 a ete considerablement revisee pour suivre la structure commune des normes fonctionnelles pour les relais de protection (serie IEC 60255-1xx). L’IEC 60255-187-1 a ete developpee pour traiter la protection differentielle avec et sans caracteristique de retenue des moteurs, generateurs et transformateurs. Les revisions comprennent une description detaillee des fonctions, y compris les specifications de performance, les essais et les exigences en matiere de documentation. Le contenu du corrigendum davril 2023 a ete pris en consideration dans cet exemplaire.

These corrections apply to this standard:

IEC 60255-187-1-ed.1.0/Cor.1 Correction

Corrigendum 1 - Measuring relays and protection equipment - Part 187-1: Functional requirements for differential protection - Restrained and unrestrained differential protection of motors, generators and transformers
(Corrigendum 1 - Relais de mesure et dispositifs de protection - Partie 187-1: Exigences fonctionnelles pour la protection differentielle - Protection differentielle avec et sans caracteristique de retenue des moteurs, generateurs et transformateurs)

Correction published on 21.4.2023

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