The harm form of current to human body, the harm form of current to us is great. We can't test how many volts are safe for our lives. Remember to stay away from dangerous places at all times. Let's share the harm form of current to human body.

The harm form of current to human body is 1 1, and the current passes through human body.

2, the length of the duration

3. The loop formed by current passing through human body. If the circuit goes through the heart, it is the most dangerous. )

4. Frequency of alternating current

There are three kinds of harm caused by electric current to human body: electric shock, electric injury and electromagnetic field injury.

Electric shock refers to the current passing through the human body, which destroys the normal functions of the human heart, lungs and nervous system.

Electric injury refers to the harm of thermal effect, chemical effect and mechanical effect of current to human body; Mainly refers to arc burn, molten metal splash burn, etc.

Physiological injury of electromagnetic field refers to nervous system symptoms such as dizziness, fatigue, memory loss, insomnia and dreaminess under the action of high-frequency magnetic field.

It is generally believed that it is dangerous for electric current to pass through the heart, lungs and central nervous system of human body, especially when passing through the heart. So the path from hand to foot is the most dangerous at present.

Electric shock is also easy to fall down due to severe spasm, causing current to pass through the whole body, causing secondary accidents such as falls and falls.

Concept of safe current: Due to various reasons such as individual resistance and endurance, everyone will feel and reflect the same current differently. In practical work, the general safety technology stipulates that the safety current of 50Hz alternating current passing through human body is 10mA, and the direct current is 50mA.

The harm form of current to human body 2 There are three kinds of harm to human body by current: electric shock, electric injury and electromagnetic field injury.

Electric shock generally refers to the damage caused by current when the human body comes into contact with charged objects. There are two kinds of harm caused by electric current to human body, namely electric shock and electric injury.

electric shock

Electric shock refers to the current passing through the human body, destroying the normal work of the heart, lungs and nervous system, and even endangering people's lives. In low-voltage system, when the current is small and the time is not long, ventricular fibrillation caused by current is the main cause of electric shock death. Under the condition of long electrifying time and low electrifying current, suffocation also becomes the cause of electric shock death.

Most electrocution deaths are caused by electric shock. Usually electric shock accident basically refers to electric shock.

According to the way the human body contacts the charged body and the way the current passes through the human body, electric shock can be divided into the following three situations:

Single-phase electric shock Single-phase electric shock refers to an electric shock accident caused by a part of the human body touching a charged body or other grounding conductor on the ground. Most electric shock accidents are single-phase electric shock accidents. The danger degree of single-phase electric shock is related to the operation mode of power grid. Generally speaking, single-phase electric shock in grounded power grid is more dangerous than that in ungrounded power grid.

Two-phase electric shock Two-phase electric shock refers to an electric shock accident in which the human body contacts two charged bodies at the same time. It is generally more dangerous.

Step-by-step voltage shock When the charged body is grounded and the current flows underground, the current produces a voltage drop in the soil around the grounding point. When a person is near the grounding point, the voltage between his feet is the step voltage. The resulting electric shock accident is called step voltage electric shock. C. High voltage fault grounding, or high step voltage may appear near the grounding device where large current flows.

electric?burn?injury

Electric injury refers to the local injury caused by the thermal effect, chemical effect or mechanical effect of current on the outside of human body. Electric injuries are more common in vitro and often leave scars on the body. There is no danger of electric shock.

Arc burn is the most common and serious electric injury. In the low-voltage system, when the bare knife switch is turned on with load (especially inductive load), the arc may burn people's hands and face; When the line is short-circuited, when the blown fuse is blown, hot metal particles may splash out, which may also cause burns; Short circuit caused by misoperation may also lead to arc burn.

In high voltage system, due to misoperation, strong arc will be generated, which will lead to serious burns; When the human body is too close to the charged body and the distance between them is less than the discharge distance, a strong arc will be directly generated. If a person had been hit at that time, he might have died of electric arc burns, although he might not have been killed by lightning. Electric branding is also a kind of electric injury. When the current-carrying conductor contacts the human body for a long time, due to the chemical and mechanical effects of current, the skin at the contact part hardens and forms a hard block, just like branding, which is called electrical branding. In addition, metal particles penetrate into human skin for some physical and chemical reasons, which can make the skin rough and hard, leading to the so-called "skin metallization". Both electrocautery and skin metallization will cause local harm to human body.

The harm form of current to human body 3 What kind of harm does electric shock do to human body?

1, a certain amount of current or electric energy passes through the human body, causing different degrees of tissue damage or organ dysfunction, and even death, which is called electric injury.

2. When the current passes through the heart, brain, medulla oblongata, spinal cord and other important tissues and organs, it becomes a fatal electric injury.

3. Low-voltage current can stop the heartbeat and then stop breathing.

4. Due to the strong stimulation to the central nervous system, the high-voltage current first stops breathing, and then stops the heartbeat.

What are the emergency measures for electric shock?

One is to cut off the power supply quickly against the clock, and take the fastest and safest way to cut off the power supply according to the specific environment and conditions at that time, so that patients can be separated from the power supply.

Second, for patients with serious illness, such as cardiac arrest or even cardiac arrest, on-site cardiopulmonary resuscitation should be carried out immediately. If conditions permit, you can perform electric defibrillation, and then dial 120 immediately at the same time. After cardiopulmonary resuscitation, you can transfer to a local hospital for treatment.

What sequela can you have after getting an electric shock?

First, cardiovascular sequelae, coronary thrombosis deterioration or infarction sequelae, precordial pain, cardiac insufficiency, impaired renal function and thrombosis sequelae.

Second, sequelae of the central nervous system, such as peripheral neuropathy, myelopathy, lateral sclerosis paralysis, secondary epilepsy, vision problems, electric shock cataract, deafness and so on.

Third, functional sequelae come from wrist area, abnormal scar and muscle injury.

Fourth, psychological sequelae, such as negative, insomnia, unstable personality and so on.

What fruit does electric shock eat fast?

What fruit to eat after electric shock is good and fast, and the recovery after electric shock has nothing to do with what fruit to eat. After electric shock, people usually go to the hospital for oxygen therapy, and patients with severe hypoxia can also be treated with hyperbaric oxygen. Bed rest is generally advocated. Early application of hypothermia therapy can correct the imbalance of water, electrolyte and acid-base and prevent secondary infection. The dressing of sterile gauze and effective sedation and analgesia are also very important, focusing on rest.