There are many types of electrical equipment and places in the power industry, and the causes of fire are also very complex. For example, transformers, high-voltage switchgears and other related electrical equipment in the power distribution room are long-running equipment that is prone to fire accidents; in cable tunnels, the fire is caused by the heat generated by the current; the overheating of the outdoor oil-immersed transformer and the poor contact of the load short circuit are easy to cause a fire.

The high pressure water mist fire extinguishing system uses water mist to extinguish, suppress and control fires. After entering the fire site, the water mist quickly absorbs heat to reduce the temperature of the protected object and the environment. The large amount of water vapor can block the intake of fresh air by material combustion, cut off oxygen supplement, suffocate the flame, and block the radiant heat very significantly. Compared with gas fire extinguishing systems, it has the advantages of low cost of fire extinguishing media and no harm to people and the environment, and at the same time reduces the requirements for the tightness of the protected space. Compared with water spray fire extinguishing systems, the advantages of high pressure water mist fire extinguishing systems are still significant. The most important point is that the water consumption of high pressure water mist fire extinguishing systems is only 1/30 or less of water mist fire extinguishing systems. In addition, the cooling and smoke removal effects of the water mist are also conducive to the safe escape of personnel.