Time response laboratory analysis for residual current devices

C. Espinoza, F. Villavicencio, O. Cuzco, J. Aguilar, E. Ayala, J. Morales

Research output: Contribution to conferencePaper

Abstract

© 2017 IEEE. Residual Current Devices are protection elements used in many countries for electric shock prevention. These devices detect any differential current flowing from one live line to earth and the mechanism trips opening the circuit avoiding an accident on people. The residual current is standardized based on human tolerance, usually 30 mA. In order to analyze the effectiveness of this protection for real scenarios, in this paper, an experimental research was performed using an electrical human body model including capacitors and resistances. They were applied to the limbs and multiple resistive loads simulating house appliances. Later, in order to generate a controlled leakage current by short circuits, the model was connected to a variable resistive load. After analyzing multiple signals produced in a laboratory, the results showed that a traditional protection relay can trip in average at 8.81 milliseconds almost three times faster than the specifications in the datasheet. Besides, this elements correctly operate for different signal produced by short circuits.
Original languageEnglish
Pages1-6
Number of pages6
DOIs
StatePublished - 1 Dec 2017
Event2017 IEEE PES Innovative Smart Grid Technologies Conference - Latin America, ISGT Latin America 2017 - Quito, Ecuador
Duration: 20 Sep 201722 Sep 2017

Conference

Conference2017 IEEE PES Innovative Smart Grid Technologies Conference - Latin America, ISGT Latin America 2017
Abbreviated titleISGT Latin America 2017
Country/TerritoryEcuador
CityQuito
Period20/09/1722/09/17

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