Qualidade de energia em estabelecimentos assistenciais de saúde

Abstract

To evaluate the impact of the Quality of Electric Energy - QEE in Health Care Facilities, was lead a bibliographical survey to analyze the state of the art of the research on the subject. From there, the methodology consisted of the survey of the used terminologies, as well as the current situation of norms and existing legislation in the world-wide level, to establish a parallel with the national condition. Moreover, the main sources of electric problems had been searched, in different kinds of consumers and specifically the health care industry. For careful evaluation of the interaction between medical equipment and energy network, the x-ray machine was chosen, because of its great broadcasting in all kinds of health care institutions. The evaluation of this equipment was made through measurements of voltage, current and total harmonic distortion. From de detailed study of its components and operation, it is possible to understand that it is sensible to voltage variations. Its operation is characterized for great spaces of time in stand by and very short periods of functioning during the performing of the radiological examinations. From the measurements realized, it is clear that this kind of device produces high degree of distortion in the current waveform. Finally, it is concluded that the equipment in study contributes in a significant way for the degradation of electric energy quality, being at the same time an equipment that is sensible to voltage deviations. It proves the necessity of deepened studies in other types of medical equipment, as well as in other types of equipment installed in consumers who also act in critical areas related to the intensive use of electric energy and to the end product offered to society.