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A method of earth fault loop impedance measurement without unwanted tripping of RCDs

Abstract

In low-voltage networks, earth fault loop impedance (EFLI) measurement is the basis for assessing the effectiveness of automatic disconnection of supply. Such a measurement is performed during initial and periodical verification, especially in a TN low-voltage network. Nowadays, due to widespread application of residual current devices (RCDs), such test is difficult in many circuits because RCDs operate during the test. In this paper a method of EFLI measurement, without unwanted tripping of RCDs, is proposed. This method enables the measurement of EFLI using a relatively high value of full-wave testing current. It is recommended in terms of accuracy of the measurement.

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Details

Category:
Conference activity
Type:
materiały konferencyjne indeksowane w Web of Science
Title of issue:
Conference on Progress in Applied Electrical Engineering (PAEE) strony 1 - 4
Language:
English
Publication year:
2018
Bibliographic description:
Roskosz R., Musiał E., Czapp S..: A method of earth fault loop impedance measurement without unwanted tripping of RCDs, W: Conference on Progress in Applied Electrical Engineering (PAEE), 2018, ,.
DOI:
Digital Object Identifier (open in new tab) 10.1109/paee.2018.8441050
Verified by:
Gdańsk University of Technology

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