What are the outstanding characteristics of electrical fire compared with general fire?

Compared with general fire, electrical fire has the characteristics of seasonality and timeliness.

1, seasonal

Electrical fires mostly occur in summer and winter. In summer, due to the high ambient temperature, the heating degree of electrical equipment has a great influence. If it is not properly managed, it may damage the insulation material of the equipment and cause a fire. Thunderstorm season is the key season of electrical fire prevention, so it is very important to do electrical fire prevention work well in this season.

Winter weather is cold, windy and dry, with short days and long nights, and there are many electrical fires. Use electric stoves and electric appliances to keep warm. When baking combustible materials, improper use will cause fire. In winter, the air is dry and static electricity can cause fire.

Step 2 be timely

Many electrical fires often occur at night, festivals and holidays. In festivals, holidays or before going to work, people leave in a hurry because of negligence, and do not properly handle electrical equipment and power supply, which leads to some equipment being charged for a long time, overheating or igniting other combustible materials, thus causing fires.

There is also a temporary power outage or other things leaving the equipment, so the power supply will not be cut off, and it will cause a fire after the power supply is restored. In the second half of the night, the power consumption is reduced and the power supply voltage is high, which leads to overheating or insulation damage accidents.

Precautions for electric fire extinguishing:

1, power failure and fire extinguishing

The insulation capacity of electrical equipment in fire area is reduced due to humidity or smoke, so insulation tools should be used when turning off the switch. When cutting wires, wires of different phases should be cut out of place to prevent short circuit. The wire should be cut off near the wire support point on the power supply side to prevent the wire from falling to the ground after being cut off, causing electric shock or short circuit.

If the fire has threatened the adjacent electrical equipment, the corresponding switch should be turned on quickly. When an electrical fire occurs at night, when the power supply is cut off, the problem of temporary lighting should be considered to help extinguish the fire. If the power supply department needs to cut off the power supply, it should contact in time.

2, charged fire extinguishing

Non-conductive fire extinguishing equipment should be used to extinguish the fire, such as dry powder, carbon dioxide, 12 1 1 fire extinguisher, and foam extinguisher should not be used to extinguish the fire with electricity; In order to keep a safe distance between people and the conductive fire-fighting equipment and charged bodies, rescuers should wear insulating gloves and boots or wear uniforms to operate.

When extinguishing overhead equipment such as overhead lines, the elevation angle between people and charged bodies should not exceed 45, and they should stand outside the lines to prevent wires from falling behind and touching human bodies. If the charged body has landed, a certain warning zone should be set aside to prevent people from being hurt by the step voltage.