ADDITIONAL CRITERIA, it is recommended to “verify the width of the security strip, and the minimum height of the conductors with respect to the ground and other obstacles in extra high voltage lines (EAT) ”. Therefore, geometric variations in the design and construction stage must be reviewed as indicated in the AE 409/2019 standard, in section X. The electrical gradient for transmission lines at 500 kV calculated at occupational distances (maintenance) marginally meets the limits established by the Standard (ICNIRP 2010). The comparative analysis shows that the high voltage lines in 69, 115 and 230 kV easily comply with the limits proposed by the International Commission on Non-ionizing Radiation Protection (ICNIRP) for electric and magnetic fields. Within the safety range it ranges from 2.81 to 18.33 µT, and does not exceed the recommended limit of 1000 µT Outside the safety range, it ranges between 0.66 and 3.85 µT, values below the maximum allowed limit of 200 µT for the general public Magnetic fields for high and extra high voltage lines, in general, are well below the limits recommended by ICNIRP. The electric fields in 500 kV extra high voltage lines usually determine the installation height of the conductor to comply with the limits recommended by ICNIRP, consequently, it was necessary to increase the minimum conductor-ground height to 11.7 m in order not to exceed 10 kV / m within the safety band Outside of it, the value obtained was 1.68 kV / m, which does not exceed the permitted limit of 5 kV / m for the general public. Electric fields for high voltage lines in 69, 115 and 230 kV oscillate between 0.96 and 6.48 kV / m within the safety band, values that are below the maximum limit of 10 kV / m recommended by ICNIRP Outside the safety band, the values range between 0.20 and 0.96 kV / m, well below the maximum permitted limit of 5 kV / m for the general public.

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