Everyone should know that the principle of induction heating used by induction cookers involves generating induced control currents (also known as eddy currents) through a magnetic field. During use, some radiation is produced, but it is harmless to the human body. Below, let's discuss the range of electromagnetic waves deemed harmless to the human body by IEEE (Institute of Electrical and Electronics Engineers) for high-power induction cookers:
In the frequency range from approximately 0.1 MHz to 300 MHz, magnetic field strengths exceeding 3 milligauss are considered harmful to the human body. The most significant hazards are observed between 90 MHz and 300 MHz. However, the closer the magnetic field is to 0.1 MHz, the less harmful it is. Magnetic fields below 0.1 MHz pose even smaller risks. Generally, intensities below 3 milligauss are considered within a safe range.
If an electric field is generated within the frequency range of about 1.4 MHz to 300 MHz, with an electric field strength exceeding 1 millivolt per meter (1 mV/m), it is considered harmful to the human body. The stronger the intensity, the greater the damage. If intensities are the same, the greatest harm is observed between 27 MHz and 300 MHz. Electric fields below 1.4 MHz cause negligible damage.
Electromagnetic waves between 90 MHz and 300 MHz inflict the most damage. As the frequency increases beyond 300 MHz and approaches 12,000 MHz, the degree of harm decreases significantly. Therefore, it can be inferred that frequencies such as 900 MHz and 1800 MHz, commonly used in mobile phones, fall within the harmful range. As for industrial heating electromagnetic cores with frequencies of 20-25 kHz, they fall within the normal range for audio data signals and do not pose any harm to the human body except for the impact of noise on the eardrums.
These are the guidelines set by IEEE regarding the harmless range of electromagnetic waves emitted by high-power induction cookers. Interested individuals can learn more about this topic. For further information on induction cookers, please visit the official website of PXKITCHEN Equipment in Guangdong.
