M. Gracida-Aguirre¹ & H. Calleja²

¹ Instituto Tecnológico de Cerro Azul, Carretera a Tuxpan, km 60, Cerro Azul, Veracruz, 92510, México, m_gracida@yahoo.com

² Cenidet - Departamento de Electrónica, P.O. Box 5-164 Cuernavaca Morelos, 62050, México, hcalleja@cenidet.edu.mx

Received: December 5^th 2000.
Accepted: September 12^th 2002.

Abstract

A monitoring instrument aimed at recording the voltage levels at residential installations is described. Its main feature is the capability ot recording short transients, lasting less than one cycle, while requiring a rather modest amount of memory for long monitoring periods. The instrument uses synchronous sampling of the voltage waveform, and its response to outages has been optimized.

Keywords: Power metering, Sampling instrument, Power quality.

Resumen

Se describe un instrumento de medición enfocado a registrar los niveles de tensión en instalaciones eléctricas residenciales. Su característica principal es la capacidad para registrar transitorios de corta duración, con duración menor a un ciclo de línea; al mismo tiempo, es capaz de almacenar periodos largos de medición utilizando una cantidad modesta de memoria. El instrumento utiliza el muestreo sincrónico de la forma de onda de tensión, y su respuesta a los cortes de energía se ha optimizado.

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