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Whether power transformers have radiation

Author:ZTELEC   Update time:2018-08-07 18:03:28
First, we need to distinguish the difference between "magnetic field" and "electromagnetic radiation": in the electromagnetic environment and public health, power transformer and transformation facilities such as power transformers produce "electric field", "magnetic field", "electromagnetic field" instead of "electromagnetic radiation." ". "Electromagnetic radiation" is a special engineering term in the field of radio communication engineering and electromagnetic compatibility. It refers to the phenomenon that energy is emitted from the source into space in the form of electromagnetic waves, or that energy is transmitted in space in the form of electromagnetic waves. Power transmission and transformation facilities use equipment as the carrier for energy transmission, rather than "electromagnetic waves" for energy transmission. Around the power transmission and transformation facilities, "electric field", "magnetic field", and "electromagnetic field" are generated.
Power transformer||distribution transformer
Why do power transmission and transformation facilities such as distribution transformers do not produce effective electromagnetic radiation to the surrounding environment? This is because the power frequency magnetic field generated by the AC power transmission and transformation facilities belongs to a very low magnetic field and affects the surrounding environment through electromagnetic induction. The frequency of the power frequency electric field and the power frequency magnetic field is only 50 Hz, and the wavelength is up to 6000 kM. However, since the length of the transmission line itself is generally much smaller than this wavelength, it cannot constitute effective electromagnetic radiation. At the same time, the power frequency magnetic field and the power frequency electric field are independent of each other, which is different from the high frequency electromagnetic field. The electric and magnetic fields of a high-frequency electromagnetic field alternately generate radiation that propagates forward to form electromagnetic energy. In the documents of international authorities, the electric and magnetic fields generated by AC power transmission and transformation facilities are clearly called power frequency electric fields and power frequency magnetic fields, not electromagnetic radiation.

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