Patent ID: 11867741
Assignee: LIONEL CIMA
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 7:
8. Device for detecting a fault in an electrical network, the electrical network comprising at least one electrical equipment electrically connected to a first power conductor and to a second power conductor, the network also being provided with a common conductor, the device being intended to be connected to the power conductors and to the common conductor at the level of a measurement area and comprising:
a first measuring member in accordance with claim 1;
a second measuring member for producing a second quantity (Inet) representative of a network current flowing in the power conductors;
a calculator, connected to the first and second measuring members, the calculator being configured to determine, over a determined observation period, a quantity representative of a so-called “mixed” energy (Emix) defined as the integral over the determined observation period of the product of the common mode voltage and the network current and conveyed in the measurement area, the quantity representative of the mixed energy (Emix) being determined from the first quantity (Vres) and from the second quantity (Inet).