Title :
Design and application of low ratio high accuracy split-core, core-balance current transformer
Author :
Das, J.C. ; Mullikin, Randy
Author_Institution :
AMEC, Inc., Atlanta, GA
Abstract :
The paper describes the design and application of a split-core CT of large dimensions, specifically designed for mounting in 13.8 kV switchgear cubical on the phase bus bars. Though split-core CTpsilas of high current ratio are available, the authors believe that the core-balance CT described in this paper is unique, as no similar CT was readily available in the US/European market. Thus, there is no equivalent installation in the industry of the specifications described in the paper. The CT discussed in this paper was specifically designed to meet the requirements of dimensions and accuracy for sensitive ground fault and directional ground fault relaying.
Keywords :
busbars; current transformers; fault diagnosis; power transformer protection; relay protection; switchgear; transformer cores; European market; core-balance current transformer; directional ground fault relaying; ground fault sensitivity; low ratio high accuracy split-core; phase bus bars; switchgear; voltage 13.8 kV; Bars; Cables; Circuit faults; Circuit testing; Current transformers; Magnetic cores; Relays; Switchgear; Thermal resistance; Transformer cores; CT saturation; Split-core; class C and T accuracies; core-balance current; transformers;
Conference_Titel :
Pulp and Paper Industry Technical Conference, 2008. PPIC 2008. Conference Record of 2008 54th Annual
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-2524-2
Electronic_ISBN :
0190-2172
DOI :
10.1109/PAPCON.2008.4585808
