As an indispensable part of the power system, the safety performance of power socket is directly related to the safe operation of electrical equipment and the safety of users' lives and properties. With the progress of science and technology and the improvement of people's living standards, the safety performance requirements for power sockets are getting higher and higher. This paper will focus on the safety performance of power socket technology for in-depth discussion, especially lightning protection technology, overload protection and short circuit protection technology and the application of fire-retardant materials, aims to provide readers with a comprehensive understanding and awareness.

Second, lightning technology: effectively avoid lightning damage to electrical equipment

Lightning is a natural phenomenon with extremely high voltage and current, posing a serious threat to electrical equipment. Power socket as the interface of electrical equipment, its lightning protection design is particularly important. At present, the lightning protection technology of power socket mainly includes the following kinds:

Lightning rod and grounding system

Lightning rod is the first line of defense for lightning protection of power socket, which reduces the direct impact of lightning on electrical equipment by guiding the lightning current into the ground. At the same time, a good grounding system can quickly channel lightning current into the ground, avoiding the accumulation of lightning current inside the electrical equipment, thus protecting the electrical equipment from damage.

Built-in lightning protection module

Modern power sockets usually have a built-in lightning protection module, which can respond quickly to lightning when it occurs, channeling the lightning current into the ground to avoid damage to electrical equipment. At the same time, the lightning protection module also has an overvoltage protection function, which can cut off the circuit when the voltage is abnormal and protect electrical equipment from overvoltage damage.

For example, a well-known brand launched a smart power socket, built-in high-performance lightning protection module. The module adopts advanced transient voltage suppression technology, can respond to lightning impact in nanoseconds, effectively protect electrical equipment from damage. At the same time, the power outlet also has over-voltage protection, can automatically cut off the circuit when the voltage is abnormal, to ensure the safety of users of electricity.

Overload protection and short-circuit protection technology: ensure the safety of electricity consumption

Overload and short circuit is a common type of failure of electrical equipment, which can easily cause fire and other safety accidents. Therefore, the power socket must have overload protection and short circuit protection to ensure the safety of electricity.

Overload protection technology

Overload protection technology is mainly realized by limiting the current of electrical equipment. When the current of the electrical equipment exceeds the rated value, the overload protection device in the power socket will quickly cut off the circuit to avoid the electrical equipment from being damaged or causing fire due to prolonged overload.

The overload protection device usually adopts thermistor or electronic overload protector. Thermistor will generate heat when the current is too large, so that the resistance value increases, thus limiting the current; electronic overload protector through the detection of current changes in the circuit, when the current exceeds the set value automatically cut off the circuit.

Short-circuit protection technology

Short-circuit protection technology is mainly realized by detecting abnormal current in the circuit. When electrical equipment short-circuit, the current in the circuit will increase rapidly, at this time the short-circuit protection device will quickly cut off the circuit, to avoid electrical equipment due to short-circuit damage or fire.

Short-circuit protection devices are usually electromagnetic circuit breakers or electronic short-circuit protectors. Electromagnetic circuit breaker will produce a strong electromagnetic force when the short circuit occurs, so that the circuit breaker is quickly disconnected; electronic short-circuit protector by detecting changes in the current in the circuit, when the current exceeds the set value automatically cut off the circuit.

Fourth, fire retardant materials: improve product safety performance

Fire-retardant materials are an important guarantee for the safety performance of power sockets. Using fire-retardant materials manufactured power socket, in the event of a fire can effectively prevent the spread of fire and reduce fire damage.

At present, commonly used fire-retardant materials include fire-retardant plastics, fire-retardant rubber and fire-retardant coatings. These materials have good flame retardant properties, can maintain a certain stability at high temperatures, and are not easy to burn or spread after burning.

For example, a brand of high-end power socket uses flame retardant plastic as the shell material. The material will produce a large number of inert gases and water vapor when burning, reducing the oxygen concentration and temperature of the combustion zone, thus effectively preventing the spread of fire. At the same time, the material also has good weather resistance and mechanical strength, which can ensure the stability and reliability of the power socket in the long-term use process.

V. Conclusion

The safety performance technology of the power socket is of great significance for guaranteeing the safe operation of electrical equipment and the safety of users' lives and properties. Lightning technology, overload protection and short-circuit protection technology, as well as the application of fire-retardant materials is an important means to improve the safety performance of power sockets. In the future, with the continuous development of science and technology, the safety performance technology of power socket will be more widely used and developed.