The electromagnetic radiation in the train compartment is not only related to the electrical characteristics of the train, but also related to the complex factors such as the vehicle type, the position and height of the measuring points in the train compartment, the running state of the train and so on. Although there is electromagnetic radiation from high-speed rail, it is not enough to cause great harm to human body, which can be assured.
Extended data
A Chinese paper on 20 12 measured the electric field radiation in the motor train. The results show that for CRH2A and CRH5A EMUs, the electric field radiation values of the first-class car, the second-class car, the car joint and the cab are distributed in the range of 0.01-0.021kv/m. This value is also within the limit (5kV/m) specified by ICNIRP.
In addition to the above 50Hz power frequency radiation, high-speed rail will also produce radiation in other frequency bands. There are many reasons for this situation, such as the radiation caused by poor contact between pantograph and catenary, and the radiation caused by related components in the process of current transformation and frequency conversion.
This radiation has a wide frequency range, ranging from tens of Hz to 2GHz. This kind of radiation has corresponding research and national standards.
The measurement method and data processing method are specified.
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