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Electric field

Here is information about how an electric field affects a person, and whether to stay for a long time under high-voltage lines where there is an electric field.

All human life is surrounded by natural atmospheric electric fields. The electric field itself most clearly manifests itself in a thunderstorm. Then the tension near the ground reaches 10 kilovolts per meter (kV / m). But even in cloudless weather, the atmospheric field has an average strength of 130 volts per meter. We are talking about the average because. what, like and. for example, solar activity, atmospheric electric field oscillates cyclically, reaching a maximum in certain periods. There are 22-year (two eleven-year), annual, 27-day and daily periods. This value also depends on the geographical position: the maximum electric field strength is at moderate latitudes, and the minimum is at the poles and at the equator. But all these changes are taken by the body for granted.

Thanks to vigorous scientific and technical activities, especially in recent decades, people brought their corrections to the atmosphere around us. The level of electric field strength has increased and in some places it has already become indifferent to a living organism.

A particularly strong impact on health is exerted by the electric field where there are high-voltage power lines (power lines). The electric field is directly below the power line. depending of course. from its design, sometimes reaches tens of kilovolts per meter.

According to scientists, the main mechanism of the biological effect of the electric field is the appearance of “bias currents” in the body. This is called the movement of electrically charged particles.

Studies have shown that the degree of functional disorders depends on the duration of a person’s stay in an electric field. The most sensitive nervous system. Following it, apparently, indirectly, disorders of the activity and the cardiovascular system, changes in the composition of the blood can occur.

Therefore, high-voltage structures are being built taking into account the fact that people in their area comply with all necessary hygiene standards.

Scientists have established the potential danger of a person staying in an electric field, the intensity of which exceeds 25 kV / m. Here you can only work with personal protective equipment.

The level of electric field strength in residential buildings is safe, where a person stays unlimited in time – 0.5 kV / m. For comparison, you can bring such an household appliance as an electric blanket. which creates a level of tension of up to 0.2 kV / m, 1 kV / m is an allowable level of tension in residential areas. But in places little visited by people (undeveloped territories, agricultural land), the safe level is set at 15 kV / m, in hard-to-reach, almost impassable places – 20 kV / m.

Unaware of how the electric field of high voltage affects the body, some people in the power transmission zone set up gardens, for a long time and often go there, caring for the beds. It is unacceptable! Even professionals, on duty, performing control and repair in these places, are allowed to work no more than an hour and a half a day, if the voltage where the electric field reaches 15 kV / m, At a voltage of 20 kV / m – no more than 10 minutes.

In the area of ​​the electric field of power lines (power lines) it is undesirable to walk, ski, especially children, people with weakened cardiovascular activity. This also applies to urban areas through which high-voltage lines and a high electric field pass. You need to limit your stay in such places as much as possible. Overnight stays are unconditionally excluded.

I would like to warn gardening enthusiasts: do not build any metal houses, sheds for storing equipment on the territory of power lines, Touching such a structure, even if a person is isolated from the ground, for example, with rubber shoes, can cause a very strong and far from always safe for life blow electric current.

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