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First of all, it is necessary to clarify the concept that the electric field is not generated by the current, but by the voltage, and the alternating voltage forms the electromagnetic field. The greater the voltage, the stronger its ability to break down the medium (air), and the easier it is to establish an electric field around the conductor, because this electric field is alternating, it is easy to magnetize the conductor within the electric field range, and take on the charge, in the electric field, the charged will be subjected to the electric field force.
The role of this is called the "Lorentz force, so, in the high-voltage line."
There is an electrician in our village, when he was working on an electric pole, he didn't bother to get close to the high-voltage line, he felt the gravitational pull, he almost got sucked up, and then he hugged the electric pole tightly, and finally fell off the electric pole, which he described to me personally. So the gravitational pull of the high-voltage line is unquestionable.
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Because the high voltage electricity will produce an electric field around it, under the action of the electric field, the charge in the human body will move in a directional way, that is, electric shock, according to the different positions of the electric shock, the muscles in different areas of the human body will produce different reactions, when the muscles in the strongest area are contracted, the person seems to be by"Suction"In high-voltage electricity, however, there is a force that does occur between two energized conductors, which is called electromagnetic induction.
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Theoretically, it is possible that, first, there must be a large enough voltage to form a magnetic field in a certain order, which is simply an electromagnetic conversion, and second, there must be a large enough magnet on the person's body, and it is fixed enough, so that the person can be sucked away.
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High-voltage electricity will not produce a strong attraction, but the current will make people's muscles contract, so that people hold the wire uncontrollably, causing the illusion of current attraction, some people test whether the wire is electric with their hands, if they test it with the palm of their hands it is very dangerous, there will be electricity will catch the wire, resulting in greater damage, with the back of the hand is slightly better, the muscle contraction will leave immediately after the electric shock, of course, these practices are dangerous, but it proves that the current has no gravity.
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There is such an accident, the voltage is too high, the erection height is too low from the ground, it will form a large alternating magnetic field, if there is a large mass of ferromagnetic substances on the body, it will be dangerous, and the radiation generated by the high-voltage line is not good for health, it is recommended to stay away from the high-voltage transmission line, if you find a break, do not get close, extremely dangerous, there will be a stride electrocution accident, how to die do not know.
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High voltage electricity cannot suck people up, if you are close to high voltage, high voltage electricity may be discharged through your body to the ground, or different parts of your body may have different potentials and conduct electricity, such as step voltage.
High voltage electricity does attract tiny objects, and that is because it polarizes tiny objects, deflecting the center of charge of the object, and the object receives an electric field force greater than its gravitational force, which is discussed in secondary school physics electrostatics. But for people, it is basically difficult for the electric field force to be greater than the gravitational force.
But as long as it is electrified, that is, there is an electric current flowing through the body, it is difficult to get rid of it, and the muscles of the human body are stiff and uncontrollable.
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To be clear, the electric field is not generated by electric current, but by voltage, and alternating voltages form electromagnetic fields. The greater the voltage, the stronger its ability to break down the medium (air), the easier it is to establish an electric field around the conductor, because this electric field is alternating, it is easy to magnetize the conductor within the electric field range, with an electric charge, in the electric field, the charged will be affected by the electric field force, this is the so-called "Lorentz force", so, near the high-voltage line will be attracted, we know an electrician, when working on the electric pole, he did not get close to the high-voltage line, he felt the gravitational force, almost sucked up, and then he hugged the electric pole, Finally, he fell off the pole, as he described it to me.
So the gravitational pull of the high-voltage line is unquestionable.
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Yes, it is true that there is an attraction, just an electric field force.
The equipment used for the test of high-voltage electrical equipment includes: mass loss measuring instrument, capacitance and inductance detector, transformer comprehensive tester, DC high-voltage generator, megohmmeter, arrester resistive current tester, switch mechanical characteristics tester, AC-DC dual-purpose voltage divider, underground lead conduction tester, relay protection test device, loop resistance meter, clamp phase meter, DC resistance tester, insulation resistance tester, test transformer, ground network comprehensive tester, meter calibrator, triple frequency voltage generator, Current transformer error analyzer, high current generator, etc.
When a capacitor is put in, it will generate an inrush current that is more than 5 times greater, and unless a larger reactor is added, the inrush current may cause a quick-break protection operation. If it is a trip caused by the inrush current (the input is tripped instantly), the inrush current will be greater if the reactor is removed, so it is not recommended to remove the reactor, and the setting time limit of the superior circuit breaker can only be appropriately adjusted in this situation; If the capacitor trips after a few seconds of input, it should be considered that it is caused by harmonic resonance, and the reactor can be removed.
1. Cause analysis:
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