How to deal with electrical fires - Solutions - Huaqiang Electronic Network

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(1) Power off the fire. When electrical equipment fires or ignites nearby combustibles, the power must first be turned off. Indoor electrical fires should be pulled off the main switch as soon as possible, and fire extinguishing equipment should be used in time to save. When the outdoor high-voltage transmission line catches fire, you should call the substation or the power supply station to cut off the power supply in time.

Matters needing attention when powering off the fire: 1 The position of the power supply should be properly selected to prevent the power saving operation from being interrupted after the power is cut off; 2 The position of the power supply should be in the vicinity of the support in the direction of the power supply to prevent the wire from being cut off and falling on the ground. Short circuit to ground or danger of electric shock; 3When the power supply is cut, the live and neutral wires should be cut at different parts to prevent the line segment from being generated. 4 When the pull-off knife switch is cut off, apply insulated lever or insulated rubber gloves. Due to the fire in the electrical distribution room, the insulation strength of the knife switch will be reduced due to smoke, and the hand wet or sweating during fire fighting will cause electric shock hazard during freehand operation. 5 Turn off the motor and magnetic switch. When the load device is used, the motor should be powered off with a button, and then the knife should be pulled off to prevent the arc from being injured by the load.

(2) Fire extinguishing with electricity. Live fire extinguishing refers to fire fighting work while continuing to supply power. Most of these are in dangerous situations. If you wait for the power to be cut off and then save, you will lose the fighter and expand the danger. Or, in the case of severely affecting production and safety after the power is cut off, in order to gain time, quickly and effectively control the fire. , only with a little fire. However, it must be carried out under the premise of ensuring the safety of firefighters.

Precautions for live fire extinguishing: 1 Electric fire extinguishing can not be directly sprayed with conductive fire extinguishers (such as jet water, foam fire extinguishers, etc.), but non-conductive fire extinguishers should be used for fire extinguishing, such as carbon dioxide, 1211, dry powder and tetrachlorination. Carbon fire extinguishers, etc.; because these fire extinguishers have good insulation, general electrical fires can be used to directly carry out electric fire-fighting, but their range is not far, and fire can not stand too far; firefighters should wear them in case of fire-fighting In addition to fire-fighting suits, rubber-insulated gloves and insulated shoes should be worn. Otherwise, electric shock accidents may occur. Only in special circumstances, the firefighters in the service shall use special fire-fighting equipment after taking safe protective measures to quake water; 2 Pay attention to the surrounding environment and prevent the body (hands, feet) or fire-fighting equipment (such as fire hooks, fire axes, etc.) from directly contacting the live parts or being too close to the charged body (especially high-voltage power), causing electric shock accidents; To prevent electric shock from striding voltage, electrical equipment malfunctions during fire extinguishing. If the live conductor is broken to the ground, a step voltage will be formed in a local area. Into these areas to save, must wear insulated boots; 4 fire to save oily electrical equipment, such as transformers, oil switches in the case of electricity, should use dry yellow sand to cover the flame, so that the flame is extinguished; such as oil storage The outside of the container is on fire, the equipment is not damaged, and it can be saved by carbon dioxide, 1211, dry powder fire extinguisher. People should stand 2m away from the charged equipment; if the fire is large and threaten nearby electrical equipment, the power should be cut off. If you are not destroyed, the fuel injection is very hot. You should also cut off the power supply and use a large amount of foam fire extinguishing agent to save it. Put the spilled oil into the accident oil storage tank, or use oil-repellent facilities to prevent the oil from spreading. To prevent the ignition of oil into the cable trench; 5 to save the fire of rotating electrical equipment. In order to prevent deformation of equipment (such as shafts and bearings), it can be sprayed with spray water to make it evenly cooled. Carbon dioxide, 1211 and dry powder fire extinguishers can also be used; but it cannot be saved with yellow sand. Because sand is a hard substance, it will be damaged inside the equipment. Machine parts, causing adverse consequences.