Measuring device for electrical power and method for...

Details Measuring device for electrical power and method for... Measuring device for electrical power and method for...

G - Physics

01

R

G01R 21/133 (2006.01)

Patent

CA 2266721

(57) Abstract In order to obtain a simple circuit design for a high-precision measuring device (1a, 1b) current and voltage signals (I and U) of a consumer (2) are fed to a multiplexer (3) and multiplied with each other after digitization. To compensate external phase angle errors, various waiting cycles (ti, tu) are produced between the current value and the voltage value (I and U) in the digital signal. The invention provides a measuring device (la, 1b) and a process therefor. The invention is preferably to be used in electricity meters.

Afin de parvenir à une conception de circuit simple pour un appareil de mesure (1a, 1b) à au degré de précision, il est prévu que les signaux de courant et de tension (I et U) d'un consommateur (2) soient acheminés jusqu'à un multiplexeur (3), avant d'être multipliés entre eux, après numérisation. Pour compenser des écarts angulaires extérieurs, différents cycles d'attente sont produits entre les valeurs de l'intensité du courant et de la tension (I et U) dans le signal numérique. A cet effet, il est prévu un dispositif de mesure (1a, 1b) et un procédé. L'invention s'applique de préférence aux compteurs électriques.

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