Why is there no danger to people when there is a high voltage of 100,000 volts in static electricity

Injuries to people occur only when both the current and voltage exceed the safety standard. According to the test, the safe voltage is 36V and the safe current is 10mA.

Because the degree of harm to the human body of electric shock mainly depends on the size of the current passing through the human body and the length of time it is powered. The greater the current intensity, the greater the fatal danger; The longer it lasts, the more likely it is to die.

The minimum value of current that can be perceived by a person is called the perceived current, which is 1 mA for AC and 5 mA for DC; The maximum current that a person can get rid of after an electric shock is called getting rid of the current, which is 10mA for AC and 50mA for DC; An electric current that is life-threatening in a relatively short period of time is called a lethal current, such as a current of 100mA passing through the human body for 1s, which can be enough to make a person fatal.

So the lethal current is 50mA. In the case of protection against electric shock, the current allowed by the human body can generally be considered as 30mA.

The electrostatic voltage is 10 W volts, but the current formed is very short, and if you feel a pain in the contact area, the static electricity is released, so there is no danger.

The harm of electricity to people is mainly divided into two aspects:

1.Electrical injuries, such as the thermal effect of electric current, as well as the injuries caused by metal particles entering the human body, as well as secondary injuries caused by electric shocks and electrical injuries, this damage surface can be large or small, related to voltage, related to current, and related to the environment.

2.Electric shock, injury to the heart caused by electric currents, such as myocardial tremor, the degree of injury is mainly related to the current and frequency passing through the body.

For example, the static electricity on clothes is generally likely to exceed 100,000 volts, but the current is very small and will not cause harm to the human body. In some cases, such as working at height, if the voltage is only a few tens of volts, it may also cause some natural reactions of the human body to eventually lead to serious secondary injury.

The voltage is 10w volts, but the current formed is very short, and if you feel a pain in the contact, the static electricity will be released, and there is no danger if the time is too short.

I'm wondering about that, too!

Although static electricity can reach tens of thousands of volts, but its discharge time is extremely short, the most important thing is that static electricity does not pass through the human body under normal conditions, just passes through the surface of the **, and will not cause harm to the human body, but it is not without exceptions, lightning is also a kind of static electricity, it hits a person after the current will reach the ground through the human body, so lightning this static electricity will give people fatal injury.

The cause of death from electrocution in humans is nerve spasm, which leads to myocardial infarction and suffocation of brain cells, which requires a certain amount of time to accumulate sufficient power. With the electrostatic voltage level generated by the friction of clothing, it is not enough to last only nanoseconds. 220 volts and lightning can kill because there is enough power to keep the power on for a sufficient time.

Tens of thousands of volts of static electricity do not hurt people to be buried, because the electrostatic induced voltage belongs to direct current, the frequency of direct current is equal to 0, and the human body is electrocuted, the human body is allowed to pass through the current is usually more than 30mA, and the electrostatic discharge time is very short, under normal conditions do not pass through the human body, just from the surface of the first pass, so it will not cause harm to the human body. <

Tens of thousands of volts of static electricity does not hurt people, because the electrostatic induced voltage belongs to direct current, the frequency of direct current is equal to 0, and the human body is electrocuted to death, the current allowed by the human body is usually more than 30mA, and the electrostatic discharge is very short, under normal conditions do not pass through the human body, just from the surface of the first pass, so it will not cause harm to the human body.

There is no danger with high electrostatic voltage. Although the voltage is high, because the electrostatic electricity is very small, the corresponding current is very small when discharging, whether it causes harm to the human body mainly depends on the size of the current value, rather than simply looking at the voltage. When the human body flows through the power frequency of 1mA or DC 5mA current, the human body will have numbness, tingling, and pain.

When the human body flows through the current of power frequency 20 50mA or DC 80mA, the person will produce paralysis, spasms, tingling, increased blood pressure, and difficulty breathing. If you can't get rid of the power supply yourself, your life is in danger. When the human body flows more than 100 mA of current, the person will have difficulty breathing, and the heart will stop.

Generally speaking, when the power frequency current below 10mA and the DC current below 50mA flow through the human body, the person can get rid of the power supply, so the danger is not too great.

What causes harm to the human body is the electric current flowing through the human body.

Although the electrostatic voltage is very high, the energy is small, and the current is also very small.

Just like a bird standing on a high-voltage line, the voltage to the ground is also very high, but there is no current, and it will not be electrocuted.

Idea a few main points:

1) The electrostatic voltage is high, but it lasts for a very short time (nanoseconds), which means that its average energy is very low.

2) The damage to the human body mainly comes from the electric current.

What is said below makes a lot of sense, there must be an electric current passing through.