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Improving sensitivity of residual current transformers to high frequency earth fault currents

Abstract

For protection against electric shock in low voltage systems residual current devices are commonly used. However, their proper operation can be interfered when high frequency earth fault current occurs. Serious hazard of electrocution exists then. In order to detect such a current, it is necessary to modify parameters of residual current devices, especially the operating point of their current transformer. The authors proposed the modification in the structure of residual current devices. This modification improves sensitivity of residual current devices when high frequency earth fault current occurs. The test of the modified residual current device proved that the authors’ proposition is appropriate.

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Accepted or Published Version
DOI:
Digital Object Identifier (open in new tab) 10.1515/aee-2017-0036
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Creative Commons: CC-BY-NC-ND open in new tab

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Details

Category:
Articles
Type:
artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
Published in:
Archives of Electrical Engineering no. 66, edition 3, pages 485 - 494,
ISSN: 1427-4221
Language:
English
Publication year:
2017
Bibliographic description:
Czapp S., Dobrzyński K., Klucznik J., Lubośny Z., Kowalak R.: Improving sensitivity of residual current transformers to high frequency earth fault currents// Archives of Electrical Engineering. -Vol. 66., iss. 3 (2017), s.485-494
DOI:
Digital Object Identifier (open in new tab) 10.1515/aee-2017-0036
Verified by:
Gdańsk University of Technology

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