ResumenEn este artículo se presenta una metodología de medición del campo electromagnético producido por instalaciones de radio y telecomunicaciones y se presentan los resultados obtenidos en la evaluación de 50 sitios en la ciudad de Cali-Colombia. Este trabajo se originó por la preocupación pública causada por la proliferación de estaciones base de telefonía celular en el ámbito urbano y por los temores acerca de los posibles efectos nocivos de los campos electromagnéticos en la salud. La evaluación de los sitios se realizó con el propósito de conocer y cuantificar los niveles de campo electromagnético existentes en el medio ambiente de la ciudad. En general, los valores encontrados fueron inferiores al 0.5% del límite establecido por la Comisión Internacional para la Protección de las Radiaciones No Ionizantes, ICNIRP (0.2 mW/cm 2 ). Sin embargo, en dos casos los niveles encontrados superaron dicho límite. Palabras clave: campo electromagnético, estaciones base, telefonía celular, medición Electromagnetic Field Measurement in the City of Cali, Colombia AbstractThis paper shows a measurement methodology of the electromagnetic field produced by radio and telecommunications installations and presents results obtained in the evaluation of 50 measurement sites in the city of Cali in Colombia. This work was done because people's concern about proliferation of radio base stations in urban areas, and their fear about the possible dangerous effects of the electromagnetic fields on human health. The evaluation was carried out to determine and quantify the levels of electromagnetic field that exist in the environment of the city. In general, the values found were lower than 0.5% of the limit established by the International Commission for Non-Ionizing Radiation Protection, ICNIRP (0.2 mW/cm 2 ). However, in two sites the measured values exceeded this limit.

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This paper focus on the experimental measurements of 60 WZ electric and magnetic fields in power electrical systems, including power transmission lines and substations. The electric and magnetic fields measurements were carried out following international recommendations and standards. Additionally, using a theoretical program the case of maximum load condition was estimated. All the measured values are compared with recommended values, which are found to be lower than the limits. Measurements carried out in other systems (Colombia, Cuba and Costa Rica) shown similar results.

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