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IEC 60077-3-ed.2.0
Railway applications - Electric equipment for rolling stock - Part 3: Electrotechnical components - Rules for DC circuit-breakers
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STANDARD published on 25.10.2019
The information about the standard:
Designation standards: IEC 60077-3-ed.2.0
Publication date standards: 25.10.2019
SKU: NS-974445
The number of pages: 58
Approximate weight : 174 g (0.38 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 60077-3-ed.2.0 :
IEC 60077-3:2019 gives the rules for circuit-breakers, the main contacts of which are connected to DC power and/or auxiliary circuits. The nominal voltage of these circuits does not exceed 3 000 V DC according to IEC 60850. This part of IEC 60077, together with IEC 60077-2, states specifically: a) the characteristics of the circuit-breakers; b) the service conditions with which circuit-breakers complies with reference to: - operation and behaviour in normal service; - operation and behaviour in the case of short circuit - dielectric properties; c) the tests for confirming the compliance of the components with the characteristics under the service conditions and the methods to be adopted for these tests; d) the information to be marked on, or given with, the circuit breaker. This second edition cancels and replaces the first edition, issued in 2001. This edition includes the following main technical changes with regard to the previous edition: - procedure of verification of temperature rise is changed; - air-tightness test as type test, insulation resistance measurement are added. LIEC 60077-3:2019 donne, en complement des regles generales de lIEC 60077-2, les regles relatives aux disjoncteurs dont les contacts sont connectes aux circuits a courant continu de traction et/ou aux circuits des auxiliaires. La tension continue nominale de ces circuits nexcede pas 3 000 V CC, conformement a lIEC 60850. En complement de lIEC 60077-2, la presente partie de lIEC 60077 precise particulierement: a) les caracteristiques des disjoncteurs; b) les conditions de service que les disjoncteurs supportent du point de vue: - du fonctionnement et du comportement en service normal; - du fonctionnement et du comportement en cas de court-circuit; - des proprietes dielectriques; c) les essais de conformite des composants avec les caracteristiques dans les conditions de service ainsi que les methodes dessai correspondantes a utiliser; d) les informations a donner ou a marquer sur le disjoncteur. Cette deuxieme edition annule et remplace la premiere edition, parue en 2001. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: - modification de la procedure de verification de lechauffement; - ajout de lessai detancheite comme essai de type et de la mesure de la resistance disolement.
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