Electric cable with protective device

H - Electricity – 02 – H

Patent

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Details

H02H 3/12 (2006.01)

Patent

CA 2348512

An electric supply cable (2) feeds a source of electric power from a sending end of the cable (2) to a receiving end of the cable (2) and includes, at or adjacent the receiving end of the cable (2), electrical impedance means (6) interconnecting the live and neutral lines of the cable (2) whereby, on conduction by the cable (2), the predetermined load of the impedance means (6) is imposed upon the cable (2), and, at or adjacent the sending end of the cable (2), electrical sensing means (8) constantly monitoring the load on the cable (2), the sensing means (8) being interconnected with switch means (10) such that, in the absence of the predetermined load of the impedance means (6), the switch means (10) are activated to disconnect the cable (2) from the source.

Selon cette invention, un câble d'alimentation (2) alimente une source d'électricité entre une extrémité d'émission du câble (2) et une extrémité de réception dudit câble (2). Il comprend à son extrémité de réception ou près de celle-ci un dispositif à impédance électrique (6) reliant les conducteurs sous tension et neutre du câble (2). Lorsque le câble (2) est sous tension, une charge prédéterminée du dispositif à impédance électrique (6) est appliquée au câble (2), et un détecteur électrique (8) à l'extrémité d'émission du câble (2) ou près de celle-ci surveille en permanence la charge dudit câble (2), ledit détecteur (8) étant connecté à des dispositifs de commutation (10) de manière à actionner ces derniers en cas d'absence de la charge prédéterminée du dispositif à impédance (6) et à déconnecter le câble (2) de la source.

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