What is used to extinguish electric fires, and what is suitable to extinguish electrical fires

Dry chemical fire extinguisher, this is a new fire extinguisher, the previous foam fire extinguisher, carbon dioxide fire extinguisher is to make the fire lack of oxygen and extinguished, if not done well, it will cause suffocation. The dry chemical fire extinguisher is not simply extinguishing the fire from the surface, it will block the chain reaction like a chain when the fire burns, and extinguish the fire from the root, while the dry chemical fire extinguisher is insulated, so there is no need to worry about a short circuit and increase the fire.

A fire extinguisher is a portable fire extinguishing tool. Chemicals are placed inside the fire extinguisher to extinguish the fire. Fire extinguishers are one of the common fire prevention devices, which are stored in public places or places where fires may occur.

Care must be taken when using it to avoid counter-effects and dangers.

Types of fire extinguishers and objects of protection.

1. Carbon dioxide, carbon tetrachloride, 1211, difluorodibromomethane, 2402, 1301, heptafluoropropane, hexafluoropropane should be used for the rescue of cultural relics.

2. Dry powder, carbon dioxide, carbon tetrachloride, 1211, difluorodibromomethane, 1301, 2402, heptafluoropropane, hexafluoropropane, and anti-solvent foam should be used to extinguish flammable liquids.

3. Dry powder, carbon dioxide, carbon tetrachloride, 1211, difluorodibromomethane, 1301, 2402, heptafluoropropane, hexafluoropropane should be used to extinguish flammable gas.

4. Dry powder, carbon dioxide, carbon tetrachloride, 1211, difluorodibromomethane, 1301, 2402, heptafluoropropane, hexafluoropropane should be used for electrical equipment fire.

5. Carbon dioxide, carbon tetrachloride, 1211, difluorodibromomethane, 1301, 2402, heptafluoropropane, hexafluoropropane should be used for precision instrument fire.

It is clear that the fire of electrical equipment is at point 4, and dry powder, carbon dioxide, carbon tetrachloride, 1211, difluorodibromomethane, 1301, 2402, heptafluoropropane, hexafluoropropane fire extinguisher should be used.

If there is dry powder, use a dry powder fire extinguisher, and if there is none, use dry sand.

Power!!! After that, you can get whatever you want! What carbon dioxide, carbon tetrachloride is not found most of the time when there is a fire! Water is always the first choice!

Choose non-conductive fire extinguishers such as carbon dioxide, carbon tetrachloride, dry chemical fire extinguishers, etc.

Dry powder is used if the power is not off, and water can be used after confirming the power off.

When electrical equipment catches fire during operation, the power supply must be cut off before extinguishing. If power is not cut off quickly, fire extinguishers such as carbon dioxide, carbon tetrachloride, 1211 fire extinguishers or dry chemical fire extinguishers can be used. When using, a sufficient safety distance must be maintained, and the distance should not be less than 40cm for equipment of 10kv and below.

When extinguishing electrical fires that have not cut off the power supply, the following fire extinguishers need to be used: carbon tetrachloride fire extinguisher - it has a good fire extinguishing effect on fires in electrical equipment, carbon tetrachloride does not burn, and it does not conduct electricity. Carbon dioxide fire extinguisher - most suitable for extinguishing fires in electrical and electronic equipment, carbon dioxide has no corrosive effect and will not damage equipment.

Dry chemical fire extinguisher - it combines the advantages of carbon tetrachloride and carbon dioxide, and is suitable for extinguishing electrical fires with fast fire extinguishing speed.

Note that acid-alkali or foam fire extinguishers should never be used, because the fire extinguishing liquid is conductive, and the person holding the fire extinguisher will be electrocuted. This liquid can strongly corrode electrical equipment and is not easy to remove afterwards.

1211 fire extinguisher, carbon dioxide fire extinguisher, dry powder fire extinguisher, carbon tetrachloride fire extinguisher.

Fire extinguisher. It has relatively small corrosiveness, will not cause pollution to the environment, and the speed of fire extinguishing is relatively fast, and can be used for fires caused by liquids, gases, and live equipment.

When using the 1211 fire extinguisher, you need to hold it firmly with your hands, stand about 5 meters away from the fire source, unplug the safety bolt of the fire extinguisher, and shoot towards the fire source.

2. Carbon dioxide fire extinguisher. Since carbon dioxide is a poor conductor of electricity, it can be used for fire protection in power facilities below 6kV. For more than 6kV, the power supply should be cut off before extinguishing the fire.

The advantage of carbon dioxide fire extinguishers is that they can be released without polluting the environment and without causing corrosion and damage to the protected area.

When using a carbon dioxide fire extinguisher, place it 5 meters away from the fire source, remove the safety bolt, pull open and close the pressure handle with one hand, and hold the spray angle handle with the other hand to aim at the flame spray.

3. Dry powder fire extinguisher. Dry powder is a non-conductive material, so it is effective in extinguishing initial fires in flammable liquids, gases, and electrical equipment. Its advantages are easy storage, easy to use, rapid fire extinguishing, and low cost of dry powder fire extinguishing agent.

When using a dry chemical fire extinguisher, grasp it with your hands first, do not turn it upside down or lie flat. Tilt the spray gun slightly upward, put it down 5 meters away from the fire source, remove the safety bolt, open the handle of the spray gun with one hand, and aim the spray gun at the flame with the other hand, spray it on the burning surface until the flame is extinguished.

4. Carbon tetrachloride fire extinguisher. It has the advantage of being non-conductive and suitable for fires of electrical equipment below 10kv, but it has a certain toxicity and may be life-threatening if inhaled too much, so use a wet towel to plug your mouth and nose indoors.

When using a carbon tetrachloride fire extinguisher, shake the bottle a few times, remove the seal, remove the safety pin, and hold the nozzle with one hand and the pressure handle with the other. 2 meters away from the flame, press the pressure handle firmly and hold the nozzle to swing from side to side until the flame is completely extinguished.

1. First cut off the power supply at home.

When an electrical appliance catches fire, it is generally necessary to cut off the power to extinguish the fire. It should be noted that you must not use water to fight the fire first, because electrical appliances are generally electrified, and the water splashed on it can conduct electricity, and using water to fight the fire may cause people to be electrocuted, and it will not achieve the purpose of fighting the fire, and the loss will be even more serious. In the event of an electrical fire, water should only be used to extinguish the fire if it is certain that the power supply has been cut off.

2. Use a fire extinguisher to extinguish the fire. In the case that it is not certain whether the power supply is cut off, it can be extinguished with dry powder, carbon dioxide, carbon tetrachloride and other fire extinguishing agents.

3. Do not splash water or use any fire extinguishers on TVs and computers. Because the sudden drop in temperature can cause the red-hot picture tube to occur immediately**. In addition, televisions and computers still carry residual current, which may cause electric shock when splashed with water.

When extinguishing a fire, they should not be approached head-on, and in order to prevent the CRT from injuring people, the TV or computer should only be approached from the side or back.

4. Call 110 or 119** immediately. If the fire is not under control, personnel are to evacuate the room and call for help**.

Fire extinguishing method of electrical **:

Cut off the power supply in time. If only a few electrical short-circuits**, you can immediately turn off the electrical power switch and cut off the power supply. If the entire circuit burns, the main switch must be pulled off to cut off the main power supply.

If the accident site is too far away from the main switch and has no time to pull it off, decisive measures should be taken to cut off the wire at the burning place in the correct way. Be careful not to pull or cut directly with your hands or metal tools, but to stand on a wooden bench and cut wires with wire cutters, diagonal pliers and other tools with insulated handles. Cut off the power supply The rear can be extinguished by conventional methods, and water can be used to extinguish when there is no fire extinguisher.

After the electrical equipment is on fire, it cannot be directly flushed with water. Because water is conductive, it is easy to cause electric shock after entering the live equipment, which will reduce the insulation performance of the equipment, and even cause the equipment to endanger personal safety. After a fire breaks out in oil-filled equipment such as transformers and oil circuit breakers, water can be sprayed into a mist to extinguish the fire.

Due to the large area of water mist and the small water droplets, it is easy to absorb heat and vaporize, which can quickly reduce the flame temperature.

Use safe fire extinguishing equipment. When electrical equipment catches fire during operation, the power supply must be cut off before extinguishing. If the power cannot be cut off quickly, equipment such as carbon dioxide, carbon tetrachloride, 1211 fire extinguishers or dry chemical fire extinguishers can be used.

When using, a sufficient safety distance must be maintained, and the fire extinguishing distance for equipment of 10 thousand volts and below should not be less than 40 cm.

Acid-alkali or foam fire extinguishers should never be used, because the fire extinguishing liquid is conductive, and people using hand-held fire extinguishers will be electrocuted. Moreover, this liquid will strongly corrode electrical equipment and is not easy to remove afterwards.

When living in a room, a corridor or a neighboring house, you must first turn off the main power switch, otherwise it is easy to cause a short circuit in the wires, thereby contributing to the spread of fire.

1.Turn off the electric switch as soon as possible, and do not pull the plug, because the wire may leak and cause accidental injury;

2.After pulling down the electric switch, the electric ** is a general solid fire, and the normal fire extinguishing methods are OK, but it is not recommended to use dry powder, because the powder enters the electrical appliance and is difficult to clean;

3.If the situation is urgent, and the electric switch is far away, use a nearby water-based fire extinguisher to extinguish the fire (which contains chemicals, AFF, within 1kv is OK), do not spray directly on the electrical components, cold and heat may cause**;

4.If it is a valuable electrical appliance, do not use a water-based fire extinguisher, it will cause damage to confidential instruments, the initial fire is small, you can use a fire blanket, cover the fire source, and extinguish the fire with the suffocation method;

5.Don't think about extinguishing the fire if the fire is bigger, the most important thing is to protect yourself, and the most important thing is to escape from the fire scene as soon as possible.

1. After the electrical equipment is on fire, it cannot be directly poured with water. Because water is conductive, it is easy to cause electric shock after entering live equipment, which will reduce the insulation performance of the equipment, and even cause equipment **, endangering personal safety.

2. If only a few electrical appliances are short-circuited**, the power switch of the electrical appliances can be turned off immediately and the power supply can be cut off. If the entire circuit burns, the main switch must be pulled off to cut off the main power supply. If it is too far away from the main switch to be pulled off, the wire away from the burning place should be cut off in the correct way.

Pay attention not to pull or cut directly with your hands or metal tools, but stand on the wooden board and cut the wires with wire cutters, diagonal pliers and other tools with insulating handles; After cutting off the power supply, conventional fire extinguishing methods can be used.

Don't panic after electricity, the first thing to do is find and turn off the main switch, and use a dry powder fire extinguisher to extinguish the open flame.

Turn off the power first. Then you can use a fire extinguisher with dry powder, carbon dioxide, etc. No water is allowed.

Cut off the power supply in time.

After the electrical equipment is on fire, it cannot be directly flushed with water.

Use safe fire extinguishing equipment.

Do not use acid-alkali or foam fire extinguishers, because the fire extinguishing liquid is conductive, and people using hand-held fire extinguishers will be electrocuted. Moreover, this liquid will strongly corrode electrical equipment and is not easy to remove afterwards.

Use sand, never water!

Turn off the power switch first. Dry chemical fire extinguisher!! Didn't use sand!!

The correct way to extinguish an electric fire is: first cut off the power supply, do not extinguish the fire with water, use safe fire extinguishing equipment to extinguish the fire, do not use acid, alkali or foam fire extinguisher to extinguish the fire, etc.

Some electrical equipment or circuits are burned due to aging lines or excessive load of electrical equipment. So how should the circuit be extinguished? Let's find out.

01 First of all, cut off the power supply in time, if it is a short circuit of an electrical appliance**, cut off the power supply of the electrical appliance. Do not pull the wires directly with your hands when cutting off the power supply.

02 Circuit** can not directly use water to extinguish the fire, because water will conduct electricity, which can easily cause electric shock accidents.

03 Use safe fire extinguishing equipment, including carbon dioxide, carbon tetrachloride, 1211 fire extinguishers or dry chemical fire extinguishers, etc., and keep a safe distance when using these equipment to extinguish fires.

04 Do not use acid-alkali or foam fire extinguishers to extinguish the circuit**, because these fire extinguishing liquids are conductive, which can easily cause electric shock to fire extinguishers.

05 In the process of extinguishing the fire, it is necessary to ensure the safety of the fire extinguisher, prevent electric shock accidents or fire burns, and pay attention to maintaining the safety distance of fire extinguishing and the insulation of your own body.

First, cut off the power supply and turn off the main valve. Then extinguish it with a fire extinguisher.

Fire extinguishers suitable for extinguishing electric fires:

1. Dry powder fire extinguisher is a new fire extinguisher, the previous foam fire extinguisher and carbon dioxide fire extinguisher are extinguished due to lack of oxygen, which may cause suffocation. The dry powder fire extinguisher is not simply extinguishing the fire from the surface, it will block the chain reaction like a chain when the fire burns, and extinguish the fire from the root, while the dry powder extinguishing firearm is insulated, so there is no need to worry about a short circuit and increase the fire.

2. Water-based water mist fire extinguisher, which is green and environmentally friendly, and the agent can be 100% biodegradable after fire extinguishing, and will not cause pollution to surrounding equipment and space. High efficiency flame retardant, strong re-ignition resistance, fast fire extinguishing speed, strong permeability and other characteristics, which are not compared with the previous fire extinguisher, and can be insulated.