NDLI: Standard CT accuracy ratings in metal-clad switchgear

Content Provider	IEEE Xplore Digital Library
Author	Zocholl, S.E.
Copyright Year	2006
Description	Author affiliation: Schweitzer Eng. Lab. Inc., USA (Zocholl, S.E.)
Abstract	This paper shows the consequences of low accuracy ratings and analyzes the relay response for fault currents in the range of 25 kA to 50 kA, using the CT accuracy rating from the relay data acquisition. To ensure proper relaying performance, the user should make a careful analysis of CT performance considering the relaying requirements for the specific short circuit current and the secondary circuit impedances. The careful analysis of CT performance for high magnitude offset fault requires computer simulation of the relay, as well as the CT, and cannot be carried out by manual calculation.
File Size	360287
File Format	PDF
ISBN	1424400430
DOI	10.1109/CPRE.2006.1638702
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-04-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switchgear Current transformers Protective relaying Fault currents Digital relays Circuit faults Digital filters Current measurement Protection Data acquisition
Content Type	Text
Resource Type	Article

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