G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 31/08 (2006.01) G01H 11/06 (2006.01) G01R 31/12 (2006.01)
Patent
CA 2252103
An apparatus and method for detecting and locating electric current leakage paths along the length of an electrically conducting elongate member is disclosed. The apparatus has variable supply means (8, 10) and means for monitoring the impedance of the member (9, 11), the supply means being operable to drive current in opposite directions along the member, so that a movable node can be established, the node being where the net change in potential between the member and its surroundings is substantially zero. When the apparatus is in use, the position of the node is varied by varying the current driven along the member and the resultant impedance is monitored by the monitoring means (9, 11), whereby the position of the node at which there is a local minimum in the impedance indicates the position of a current leakage path.
Dispositif et procédé servant à détecter et à localiser des fuites de courant électrique le long d'un élément allongé conducteur électriquement. Ce dispositif possède des moyens d'alimentation variable (8, 10), ainsi que des moyens de contrôle de l'impédance de l'élément (9, 11), les moyens d'alimentation étant capables de conduire le courant dans des sens opposés le long de l'élément, de manière à pouvoir établir un noeud mobile, ce noeud étant situé à l'endroit sur lequel le changement net de potentiel entre l'élément et son environnement est sensiblement égal à zéro. Quand le dispositif fonctionne, la position du noeud est modifiée sous l'effet de la variation du courant circulant le long de l'élément et l'impédance qui en résulte est contrôlée par les moyens de contrôle (9, 11), la position du noeud sur laquelle se trouve un minimum local de l'impédance indiquant la position d'une fuite de courant.
Flight Refuelling Limited
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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