Effects of RF magnetic fields on people working in electrosteelindustries

摘要

The authors attempt to elucidate sources of RF magnetic fieldspresent around induction industrial heaters and their biological effectson workers dealing with such heaters. Measurements of magnetic fieldtaken around a small induction furnace were used to develop a method formagnetic-field estimation around the crucible of a higher-power furnace.Measurements indicate that people working near the crucible will beexposed to nerve and muscle stimulation if this furnace operates atabove 5 kW input power. Below this power, people will be exposed tophosphones. Therefore, precaution must be taken, such as screening toreduce the amount of magnetic field produced by this magnetic device