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IEC 61869-14-ed.1.0
Instrument transformers - Part 14: Additional requirements for current transformers for DC applications
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STANDARD published on 17.7.2018
The information about the standard:
Designation standards: IEC 61869-14-ed.1.0
Publication date standards: 17.7.2018
SKU: NS-854872
The number of pages: 85
Approximate weight : 286 g (0.63 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 61869-14-ed.1.0 :
IEC 61869-14:2018 provides all requirements specific to current transformers to be used in DC applications (DCCTs), whatever the technology used. The output signal can be analogue or digital. It is applicable to newly manufactured current transformers used for measuring, protection and/or control applications in DC power systems with a rated voltage above 1,5 kV. The general configuration of a single-pole low-power instrument transformer is described in Figure 601 of IEC 61869-6:2016. The DCCTs intended for current measurement in the transistor branch of the VSC valve (referred to as CT4a and CT4b in Figure 1403 and Table 1402) are not covered by this document, and will be considered in a future revision. IEC 61869-14:2018 applies to current transformers intended to be used in DC applications with at least one of the following functions: • measure DC current (with significant harmonics); • withstand DC voltage. Depending on the position on the DC system, different kinds of application exist, which are briefly described below, together with the approximate voltage or current wave shape. IEC 61869-14:2018 couvre toutes les exigences particulieres concernant les transformateurs de courant utilises dans les applications en courant continu (DCCTs), quelle que soit la technologie utilisee. Le signal de sortie peut etre analogique ou numerique. Elle sapplique aux transformateurs de courant fabriques recemment et utilises pour des applications de mesure, de protection et/ou de commande sur des systemes dalimentation electrique en courant continu dont la tension assignee est superieure a 1,5 kV. La configuration generale dun transformateur de mesure de faible puissance unipolaire est decrite a la Figure 601 de lIEC 61869-6:2016. Les transformateurs de courant continu destines aux mesures de courant dans la branche du transistor de la valve VSC (denommes CT4a et CT4b a la Figure 1403 et au Tableau 1402) ne sont pas couverts par le present document et seront traites lors dune prochaine revision. IEC 61869-14:2018 sapplique aux transformateurs de courant destines a etre utilises dans les applications en courant continu avec lune des fonctions suivantes au moins: • mesurage du courant continu (avec des harmoniques elevees); • tension continue de tenue. Selon la position du systeme a courant continu, differents types dapplications existent. Ils sont decrits brievement ci-dessous, ainsi que la tension approximative ou la forme donde du courant.
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