How far away from the high-voltage lines, safety?

1 meter away, 2 meters away, or 3 meters away ... do not know if it is really dangerous! Today we take a look at the safe distance of high-voltage lines.

What is the safe distance?

In order to prevent the human body from touching or charged body to prevent the vehicle or other objects from colliding with or approaching the charged body, it is necessary to keep a certain distance from the charged body, which is a safe distance.

How much safety distance is in the end?

Keep in mind: the greater the voltage level, the greater the safety distance.

Do not touch the high-voltage line, it is absolutely safe?

Most people mistakenly believe that as long as the hands and body did not touch the high-voltage lines, they are absolutely safe. This is a big mistake

The actual situation is this: people do not touch the high-voltage lines, within a certain distance, there will be a danger. When the voltage difference is large enough, the air may be electrically broken. Of course, the greater the air distance, the less likely to be punctured, enough air distance to achieve insulation.

The high-voltage line " DTH DTH " sound is in the discharge?

High-voltage transmission lines in the transmission, the wire will form a strong electric field around the air ionization and the formation of corona discharge. So when you hear "DTH DTH" beside the high-voltage line, do not doubt that it's discharging.

Moreover, the higher the voltage level, the stronger the corona and the greater the noise. Night or foggy weather, near the 220 kV, 500 kV high-voltage transmission lines may also observe a faint blue-purple halo.

But sometimes walking in the city, and did not think the wires have "DTH DTH " sound you?

This is because, within the urban area of 10 kV, 35 kV distribution lines and more use of insulated wire, will not produce air ionization, and the voltage level is low, the corona strength is weak, "DTH DTH" sound easily around the Horn, noise covered off.