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IEC 61557-11-ed.2.0
Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 11: Effectiveness of residual current monitors (RCM) in TT, TN and IT systems
Translate name
STANDARD published on 23.6.2020
The information about the standard:
Designation standards: IEC 61557-11-ed.2.0
Publication date standards: 23.6.2020
SKU: NS-996908
The number of pages: 29
Approximate weight : 87 g (0.19 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Measurement of electrical and magnetic quantitiesElectrical insulation in generalPower transmission and distribution networks in general
Annotation of standard text IEC 61557-11-ed.2.0 :
IEC 61557-11:2020 specifies the requirements for test equipment applied to the testing of the effectiveness of residual current monitors (RCM) that are already installed in distribution systems. This test equipment can be used in any kind of network, such as a TN, TT or IT system. The test equipment can also be used for testing directionally discriminating residual current monitors (RCM) in IT systems. It is not the purpose of this document to verify the residual current monitors (RCM) according to their product standards. IEC 61557-11:2020 cancels and replaces the first edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) document title modified to include all types of RCM; b) terms aligned with IEC 60050; c) addition of requirements for testing new types of RCM; d) moving of requirements for RCM Type B from former Annex A to main body text; e) alignment of the structure with that of the whole IEC 61557 series. LIEC 61557-11:2020 specifie les exigences relatives au materiel dessai applique a lessai de lefficacite des controleurs disolement a courant differentiel residuel (RCM - Residual Current Monitors) deja installes dans les reseaux de distribution. Ce materiel dessai peut etre utilise dans nimporte quel type de reseau tel quun reseau TN, TT ou IT. Le materiel dessai peut egalement etre utilise pour lessai des controleurs disolement a courant differentiel residuel (RCM) selectifs en direction dans des reseaux IT. Le present document n’a pas pour objet de verifier les controleurs disolement a courant differentiel residuel (RCM) selon leurs normes de produit. LIEC 61557-11:2020 annule et remplace la premiere edition parue en 2009. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: a) le titre du present document a ete modifie pour inclure tous les types de RCM; b) termes alignes avec lIEC 60050; c) ajout des exigences pour les essais de nouveaux types de RCM; d) deplacement des exigences pour les RCM de type B de lancienne Annexe A dans le texte normatif; e) alignement de la structure sur celle de lensemble de la serie IEC 61557.
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