Electronic circuit for identifying circuit breaker...

G - Physics – 01 – R

Patent

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Details

G01R 31/327 (2006.01) H02H 3/00 (2006.01) H02J 13/00 (2006.01)

Patent

CA 2333646

A system for locating a particular circuit breaker (10-15) associated with a branch circuit (20-25). The system includes a transmitter (31, 35), which is connected to the hot lead (20a) of the branch circuit (20-25), for injecting a signal having a predetermined frequency, and identification circuits (100) permanently associated with each circuit breaker (10-15). Each identification circuit (100) includes a controlled switch (130) in series with an indicator lamp (101) which is powered by a rectifier (110) connected to the hot lead (20a) of the associated branch circuit (20). A band pass filter (120) passes the predetermined frequency, which biases the gate (131) of the controlled switch (130) when the predetermined frequency is present on the hot lead (20a), thereby turning the indicator lamp (101) on. Each identification circuit may also include a low pass filter (140) for blocking the predetermined frequency signal from being distributed via a bus bar (16) into the identification circuits associated with other branch circuits.

L'invention concerne un système permettant de localiser l'un des disjoncteurs (10-15) associés à un circuit dérivé (20-25). Ce système comprend un émetteur (31, 35) relié au conducteur sous tension (20a) de ce circuit dérivé (20-25), de manière à émettre un signal d'une fréquence prédéterminée. Ce système comprend également des circuits d'identification (100) associés de manière permanente à chaque disjoncteur (10-15), chaque circuit d'identification (100) étant pourvu d'un interrupteur commandé (130) monté en série avec un voyant lumineux (101), lequel est alimenté par un redresseur (110) relié au conducteur sous tension (20a) du circuit dérivé associé (20). Un filtre passe-bande (120), transmet la fréquence prédéterminée, laquelle permet de polariser la gâchette dudit interrupteur commandé (130), de manière à allumer le voyant lumineux (101). Chaque circuit d'identification peut également comporter un filtre passe-bas (104) destiné à empêcher le signal de fréquence prédéterminée d'être réparti par l'intermédiaire du bus d'alimentation (16) dans les circuits d'identification associés à d'autres circuits dérivés.

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