This paper investigates the electric and magnetic fields created due to the operation of roof-mounted photovoltaic units. For this purpose the most recent reference levels for safe general public and occupational exposure given in the guidelines of the International Commission on Non-Ionizing Radiation Protection are first presented. Basic constructional and operational data of the rooftop photovoltaic installations are examined follow, as well as a description of the measurement process. Electric and magnetic field measurements in typical photovoltaic units with different nominal powers and inverter types (single or three-phase) are performed under convenient weather conditions that ensure maximum electricity production. The main measurement results are evaluated according to the reference levels for safe public exposure, and the conclusion finally derived is that the examined fields are not dangerous and, therefore, are no cause for concern among the public.
展开▼
