Investigation of different alternative radiated immunity test methods

Radiated immunity measurements are commonly performed by using field uniformity at 3 m in laboratories in anechoic chambers in accordance with the standard IEC61000-4-3. However, the test of Equipment Under Test (EUT) sometimes cannot be carried out in laboratories due to several restrictions. In case of EUT with large dimensions, high power consumptions and/or auxiliary devices which are attached to the EUT, it is not possible to use laboratory facilities during tests. As a consequence, on-site radiated immunity tests are required in industry. On the other hand, radiated immunity tests and establishment of a field uniformity with 16-points have many challenges in industry and almost impossible in industrial environments due to uncontrolled reflections and narrow testing environment, for that reason alternative EMC test methods at standard or non-standard distances become unavoidable in industry. In this research, we have experimentally investigated different radiated immunity test methods commonly used in industry at standard or non-standard distances and compared them with the reference field uniformity method applied at 3 m, finally proposed the most acceptable solution for industrial environments.