Abrégé

A current transformer is described which comprises a housing having one or more apertures, each for receiving a primary cable or busbar, one or more magnetic cores enclosed within the housing and being positioned proximate to respective ones of the apertures so that a magnetic field is produced in a magnetic core when a primary current flows through a primary cable or busbar received through the respective aperture, and one or more secondary windings enclosed within the housing, each secondary winding being wrapped around at least a portion of a respective magnetic core so that a secondary current is induced in a secondary winding when a magnetic field is produced in the respective magnetic core. Shunt circuitry is enclosed within the housing and is connected across the secondary windings to generate a respective voltage signal for each secondary winding. A connector socket is integrally mounted to the housing for outputting the voltage signals. In this way, the labor costs incurred during installation of the current transformer can be reduced, a risk of wiring errors can be avoided, and a risk of electrocution from secondary terminals being left open-circuit is removed.

Classes IPC  ?

• G01R 19/18 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant la conversion d'un courant continu en courant alternatif, p. ex. à l'aide de vibreurs
• H01F 27/40 - Association structurelle de composants électriques incorporés, p. ex. fusibles
• G01R 15/18 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs inductifs, p. ex. des transformateurs
• H01F 38/30 - Construction
• H01F 38/32 - Dispositions relatives aux circuits
• H01F 38/38 - Transformateurs de mesure pour courant alternatif polyphasé
• G01R 19/00 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe
• G01R 1/00 - Détails ou dispositions des appareils des types couverts par les groupes ou
• H02M 1/00 - Détails d'appareils pour transformation
• G01M 1/00 - Test d'équilibrage statique ou dynamique des machines, des structures ou des ouvrages

Abrégé

A current transformer is described which comprises a housing having one or more apertures, each for receiving a primary cable or busbar, one or more magnetic cores enclosed within the housing and being positioned proximate to respective ones of the apertures so that a magnetic field is produced in a magnetic core when a primary current flows through a primary cable or busbar received through the respective aperture, and one or more secondary windings enclosed within the housing, each secondary winding being wrapped around at least a portion of a respective magnetic core so that a secondary current is induced in a secondary winding when a magnetic field is produced in the respective magnetic core. Shunt circuitry is enclosed within the housing and is connected across the secondary windings to generate a respective voltage signal for each secondary winding. A connector socket is integrally mounted to the housing for outputting the voltage signals. In this way, the labour costs incurred during installation of the current transformer can be reduced, a risk of wiring errors can be avoided, and a risk of electrocution from secondary terminals being left open-circuit is removed.

Classes IPC  ?

• G01R 19/15 - Indication de l'existence d'un courant
• H01F 38/30 - Construction
• H01F 38/32 - Dispositions relatives aux circuits
• H01F 38/38 - Transformateurs de mesure pour courant alternatif polyphasé

Produits et services

(1) Security and access control equipment namely, locks and accessories, burglar alarm panels, alarms, close circuit TV systems, computer aided scanning and detection equipment.

Produits et services

(1) Security and access control equipment namely, locks and accessories, burglar alarm panels, alarms, CCTV systems, computer aided scanning and detection equipment.