Synchronous switching apparatus for use with a multiple...

H - Electricity – 01 – H

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H01H 33/59 (2006.01) H01H 9/56 (2006.01)

Patent

CA 2298583

A synchronous switching apparatus for detecting a source voltage of each phase to close each phase at an electrical phase angle predetermined for each phase, including switching devices 1a-1c provided one for each phase for opening and closing an impedance load, switching devices 2a-2c for closing and opening the switching devices 1a-1c for each phase, measuring transformers 5a-5c for measuring source voltages of the respective phases and phase-to-phase voltages, and phase control devices 42 each for issuing a command for energizing the impedance load at an electrical phase angle in a range predetermined for each phase, when detecting a zero point of a source voltage of each phase or a zero point of each phase-to- phase voltage.

Un appareil de commutation synchrone, lequel détecte les tensions d'alimentation des phases et fournit les phases à des angles de phase électrique prédéterminés respectivement, comprend des commutateurs (1a-1c) prévus pour les phases respectives de connexion/déconnexion d'une charge d'impédance, des mécanismes de commutation (2a-2c) destinés à fermer/ouvrir les commutateurs (1a-1c), des transformateurs (5a-5c) des mesures des tensions d'alimentation des phases et des tensions interphases, ainsi qu'un contrôleur (42) de phase lequel produit en sortie une commande afin de fournir la tension d'alimentation à la charge d'impédance dans des plages des angles de phase électrique prédéterminés pour les phases respectives lorsque les points neutres des tensions d'alimentation des phases ou des tensions interphases sont détectés.

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