Why a bird stopped on a high voltage power line will not be electrocuted

In order to understand the reason why the current does not harm the bird, we should pay attention to such a thing: when the bird stops on the wire, the bird's body is like a branch in the circuit, and the part of the short wire between the two feet of the bird is also a branch in the circuit, because the size of the resistance is related to the length of the conductor, the shorter the conductor, the smaller the resistance, the greater the current, so the resistance of the former is obviously much greater than the latter. Therefore, the current in the bird's body is very small, so small that it is not harmful to the bird.

Have you ever observed that birds have a habit of grinding their beaks on electric wires when they stop on the cross arm of a high-voltage power pole? You must be wondering: they should have died of electrocution, why did they survive?

Oh, yes! Because the cross arm is not insulated, the bird resting on it is connected to the ground. In this way, as soon as the bird touches the electric wire, it will inevitably be electrocuted to death.

But they were not electrocuted, because people had long thought about this, and in order to prevent the death of birds, people installed insulated shelves on the cross arms of high-voltage wires. Not only can the birds be safely parked on it, but they can also grind their beaks on the wires. There are also special devices installed in dangerous places so that birds cannot touch them.

According to the explanation of the electrical aspect in physics, it is divided into several points:

1 The scratch part of a bird is a thick cuticle, but this cuticle is dry, so the resistance is very large, and it can be the same as that of an insulator such as plastic.

2 The bird stands on a power line, even a high-voltage power line, but because the bird only touches one line, not the fire wire and the neutral line at the same time, there is no loop.

3 The average bird has a small body, and the distance between the feet is small, so the voltage generated is relatively small, plus the above two reasons, so the bird generally will not be electrocuted. I didn't see any of the big birds standing on the wires! Hehe!

Because the distance between the two feet of the bird is very obvious, this small section of wire is negligible compared with the whole long wire, so the potential difference between the two ends of this small section of wire (in fact, that is, the voltage) is very small, although it will also produce the current flowing from the bird, but this current intensity will not affect the bird. It's like doing some physics experiment, and we're going to have 3 5 amperes of current on our body, but we don't feel it at all.

The stride voltage upstairs probably means that the distance between the bird's feet is very short, so the voltage difference is also very small, and there will be no lethal current through the bird's body, if the bird accidentally touches two wires at the same time, it will also be electrocuted :)

A single wire does not form a current cycle, and if it touches two wires at the same time, it will also be electrocuted.

Because a bird's talons are insulators!

A single wire does not constitute a current cycle, and the step voltage is also very small!

The distance between the bird's feet is very short, so the voltage difference is also very small, and there will be no lethal current through the bird's body, and if the bird accidentally touches two wires at the same time, it will also be electrocuted.

In addition, the bird's claws are insulated.

Lines with too high voltage generally don't go up.

Common sense problems, such as our daily wires include live wires (live, with a pen can detect and will light up), and a neutral line (not charged, the pen will not light up), when it is turned on, a cycle will be formed to produce the results we want, such as the light will be on, and the motor will be activated. Whether it is a human or an animal electrocuted because the electric current forms a cycle in the body that causes the death or injury of a person or animal, while a bird stops on a high-voltage power line and its feet touch as a wire, although the voltage is very high, it still cannot form a cycle, so it will not be electrocuted and die.

The upstairs is right.

In addition, the bird's claws are insulated.

Lines with too high voltage generally don't go up.

It's on the ** line, it's even more fine, haha! ~

The voltage of high-voltage electricity is so large, why is it that the bird parked on the high-voltage power line will not be electrocuted?

The reason is that because the bird is small and stands on a wire, it does not generate an electrical loop, so the current does not pass through the bird's body.

The premise of general electric shock is to generate a certain current, and to generate current is to have a complete circuit, which includes the live wire, the neutral wire, and the conductor. But if the bird touches both the neutral wire and the live wire, a loop current will be formed, and the current will pass through the bird, and the bird will be electrocuted to death.

The bird stands on the high-voltage line, even if it does not hold the live wire and the neutral line at the same time, but the voltage is so high, the bird's two legs are standing on it, then there will be a voltage difference between the two legs of the bird, the reason why the bird is not electrocuted is because the bird is too small, and the distance between the legs is also very close, so the voltage difference is almost negligible, and the bird cannot be electrocuted.

According to Ohm's law i=u r, when the resistance of the human body is constant, the higher the voltage acting on the human body, the greater the current flowing through the human body, the greater the risk of electric shock, and the more serious the damage to the human body.

And the bird stands on the high-voltage wire, that is, it does not touch the high-voltage discharge distance of the two high-voltage wires, and does not touch the earth, then the bird cannot form a closed loop, and the bird is equivalent to an equipotential with the high-voltage wire at this time, of course, it will not be electrocuted.

The reason why bird stands on high-voltage lines without electrocution is that the wires are insulators that prevent electric current from passing through.

Generally, the premise of electric shock is to generate current, and the current generation needs to have a complete current circuit, which includes live wire, neutral wire, and conductor. When a bird stands on a high-voltage line, a circuit is formed between its body and the ground, but since the wire is an insulator, the current cannot flow through the wire, so the bird does not get electrocuted.

The bird's body has a certain resistance that prevents electric current from passing through its body. Although there may be some charge accumulation between the toes of the bird, due to the large surface area of the bird's body, the total amount of charge is small enough to cause an electric current to accompany it through its body. If a bird comes into contact with two wires at the same time or if the insulation of the wires is broken, a circuit will be formed and an electric current will flow through the bird's body, resulting in an electric shock accident.

Ways to avoid electrocution on bird high voltage lines

1. Install bird protection devices near the high-voltage line, such as bird lightning rods, bird shrouds, etc., which can reduce the risk of electric shock for birds, and these devices can also guide birds to a safe place to avoid them from approaching high-voltage lines.

2. Planting trees and vegetation near the high-voltage line, especially tall trees, can provide shelter and habitat for the birds, so that the birds will not fly too close to the high-voltage line with their forehands.

3. Regularly inspect the nests near the high-voltage line to make sure they are in a safe position. If the nest is found to be damaged or unsafe, it will be repaired or relocated when the rental is cleared.

Due to their small size, when they fall on a high-voltage power line, they often only stand on one wire, instead of hooking the live wire and the neutral line at the same time, so they will not form a current loop, and the bird will naturally not be electrocuted.

The bird's claws are covered with a layer of keratinized scales, and the most important feature of the horn is that it contains almost no water, so it is almost insulated, so that when the bird grabs the high-voltage line, it is like putting a dry log, and there is very little electricity passing through its body.

When a bird grabs a wire, there is also resistance between its two paws, and the resistance is usually the smaller the distance, the greater the resistance. The distance between the two claws of the slag sock bird is very small, and even if the bird does not have insulated claws, its resistance is thousands of ohms, compared to a wire with only a dozen ohms, obviously the direction of the current will not change.

In fact, for people, the same is theoretically true, in the case of absolute dryness and insulation from the ground (in fact, there is no such absolute situation, so don't try), people grab a high-voltage wire with both hands, the distance between the two hands is not even 2 meters, and the resistance can still reach thousands of ohms, so the current flowing through the human body is also a safe current.

Circumstances in which a bird is electrocuted:

1. If the bird is stepping on the fire line with one foot and the other foot on the zero line, an electric shock will occur.

2. If the bird is as small as the high-voltage line above the head and steps on the ground, it will also produce an electric current and cause electric shock.

3. If two birds step on these two wires respectively, if there is a love affair between them, so that they are close to each other, it will still produce a current loop and cause an electric shock.

4. If the bird's body touches the two wires of fire and neutral at the same time, or if the bird standing on the wire grinds its beak on an uninsulated pole or rack, an electric current will flow through the bird, causing it to be electrocuted.

1. Birds are not electrocuted on high-voltage lines for two reasons:

1) scales grow on the feet of small birds, which have an insulating effect.

2) The bird is standing on a line, there is no loop, there is no continuous current, so the bird will not be electrocuted when it stops on the high-voltage line.

2. Analysis of electric shock mode of high-voltage line:

There are two ways of high-voltage electric shock: high-voltage arc electric shock and step voltage electric shock.

1) High-voltage arc electric shock refers to the electric shock caused by arc discharge caused by a person approaching a high-voltage line (high-voltage charged body). The higher the voltage, the greater the danger to people. The so-called arc discharge refers to:

Due to the high voltage, even if the high-voltage transmission line is not touched, people will see a flash of light (that is, arc light) in the process of approaching, and be knocked down by the high voltage, electrocuted, injured or killed, that is, arc discharge.

2) If a person or livestock stands within 8 10 meters from the landing point of the wire. An electric shock accident may occur, and this electric shock is called a step voltage electric shock. When a person is subjected to a stepping voltage, although the current is along the lower body of the person, from the feet through the legs, crotch and then to the feet and the earth to form a pathway, it does not pass through the vital organs of the human body, it seems to be relatively safe.

But that's not the case! Because when a person is subjected to a higher stride voltage, his feet will cramp and his body will fall to the ground. This not only increases the amount of electrical current acting on the body, but also changes the path of the current through the body, making it entirely possible for it to flow through vital organs such as head to hands or feet.

Experience has proved that after a person falls to the ground, the electric current continues to act in the body for 2 seconds, and this electric shock will be fatal.

3. First aid measures:

When a person perceives a threat from a stepping voltage, he or she should quickly put his feet together or jump out of the danger zone on one or both legs as soon as possible.

Birds can stand on high-voltage lines without being electrocuted, mainly because of the bird's body structure and special physiological mechanisms that protect it from electric shocks. Here are the possible reasons:

1.No closed loop formed: When the bird stands on a high-voltage line, only its feet touch the wire, and the rest of the body is not in contact with the ground or other conductive objects, so a closed loop is not formed. Closing the circuit causes an electric current to pass through the body, causing an electric shock.

2.Insulating effect: The bird's body is mostly made up of insulating materials, such as feathers and air. These materials have high insulating properties and can block the passage of electric current through the bird's body.

3.Dispersion of current: When a bird stands on a power line, the current flows through the bird's feet, but due to the wide distribution of the bird's body, the current will be quickly dispersed in the bird's body, reducing the possibility of the current passing through a specific part.

4.Voltage difference: A high-voltage line is usually a transmission line with a higher voltage, but where the bird stands, the voltage difference is relatively small, so the energy of the current flowing through the bird's body is low enough to cause harm to the bird.

Although birds can stand on high-voltage lines without being electrocuted, this does not mean that humans can safely perform similar behaviors. Touching high-voltage wires is still extremely dangerous for humans because our body structure and physiology are different from those of birds. Therefore, be sure to follow safety regulations and stay away from high-voltage lines and electrical facilities.