Classification of electrical accidents - Solutions - Huaqiang Electronic Network

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According to the form of disaster, electrical accidents can be divided into personal accidents, equipment accidents, electrical fires and explosion accidents. According to the circuit conditions at the time of the accident, they can be divided into short-circuit accidents, disconnection accidents, grounding accidents, electric leakage accidents, etc. The severity can be divided into major accidents, major accidents, general accidents, etc.; according to the degree of injury, it can be divided into three types: death, serious injury and minor injury.
According to the basic reasons of the accident, electrical accidents can be divided into the following categories:
(1) Electric shock accident. When a person touches a charged body (or is too close to a high-voltage charged body), a personal injury accident occurs due to a current flowing through the human body. The electric shock accident is caused by the application of current energy to the human body. The electric shock can be divided into three types: single-phase electric shock, two-phase electric shock and strid voltage electric shock.
(2) Lightning and static accidents. The positive and negative charges that temporarily lose balance in a local area, the energy of the electric charge is released under certain conditions, causing harm to the human body or other accidents. Lightning strikes can often destroy buildings, injure people and animals, and may also cause fires; the biggest threat to electrostatic discharge is fire or explosion, and may also cause harm to the human body.
(3) RF damage. The damage caused by the energy of the electromagnetic field to the human body, that is, the electromagnetic field damage. Under the action of high-frequency electromagnetic fields, the human body will be exposed to different degrees of damage due to the absorption of radiant energy, causing various diseases. In addition to high-frequency electromagnetic fields, ultra-high-voltage high-intensity power-frequency electromagnetic fields can also cause certain damage to the human body.
(4) Circuit failure. An accident caused by loss of control during the transfer, distribution, and conversion of electrical energy. Line and equipment failures not only threaten personal safety, but can also seriously damage electrical equipment.
The above four electrical accidents are most common with electric shock accidents. But no matter what kind of accident, it is caused by improper release or transfer of energy of various types of current, electric charge and electromagnetic field.