Title:
METHODS, DEVICES AND SYSTEMS FOR DETECTING AN ISOLATION FAULT IN AN ELECTRICAL INSTALLATION
Document Type and Number:
WIPO Patent Application WO/2022/018305
Kind Code:
A8
Abstract:
A method for detecting an isolation fault in an electrical installation comprises steps consisting of: - measuring (100) an AC electrical voltage between phase conductors of an electrical load to be monitored and ground, and an electric fault current flowing between said electrical load and ground; - identifying (100), in the measured electrical voltage, at least one first component oscillating at the predefined first frequency and one second component oscillating at the predefined second frequency; - calculating (102) an impedance of the electrical fault from the measurements and an impedance of the electrical installation from the identified first and second components; - selecting (104) a predetermined case from a predefined list; - identifying (106) an operating condition of the electrical installation on the basis of the selected predetermined case.
Inventors:
VINCENT FRANÇOIS (FR)
STEPANEK JIRI (FR)
STEPANEK JIRI (FR)
Application Number:
PCT/EP2021/072196
Publication Date:
April 14, 2022
Filing Date:
August 09, 2021
Export Citation:
Assignee:
SCHNEIDER ELECTRIC IND SAS (FR)
International Classes:
G01R27/18; G01R27/16; G01R31/08; G01R31/52
Attorney, Agent or Firm:
GRAND, Guillaume et al. (FR)
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