With the development of society, sockets play an irreplaceable role in human life, and the safety of sockets has received more and more attention. This article will explain the protective shutter in the socket.
What is the protective shutter
This is the protective shutter in the din rail socket, which is defined as: a movable part installed in the socket and used to automatically shield the socket when the plug is pulled out. In simple terms, its function is to protect the user’s operation safety, and is mainly used to prevent children from accidentally touching the conductive function.
At present, there are still some sockets in use that are not equipped with this component. On the one hand, the socket has a long service life. The sockets produced before are not equipped with this component but are still in use. On the other hand, some poor manufacturers do not standardize their production to save costs. of. According to the national standard requirements of “GB 2099.1 Household and Similar Sockets Part 1: General Requirements“, whether fixed sockets or mobile sockets should be protected against electric shock, Article 10.1 stipulates:
The socket should be able to do so. When the socket is installed and wired according to the normal use requirements, the live parts are not easy to touch, even after the parts that can be removed without tools are removed.
Through this regulation, it can be recognized that some insertions that do not meet the requirements of the regulations have the risk of electric shock. The role of this safety door is to provide safety protection for users. When the plug is inserted into the socket but not fully in place, this element prevents the socket inner sleeve from contacting the plug to prevent the plug from being charged; after fully inserted in place, the plug and the socket sleeve Contact, normal connection.
History of Socket protective shutter
As early as the 1920s, many manufacturers realized that early sockets, with only simple neutral and live wire contacts, were causing many curious children to get electric shocks. They began developing solutions to this problem.
Twenty years later, in the 1940s, the world’s first socket safety door was invented, but at that time, it was only available in a few European countries, such as Britain and France. These doors were designed so that only when the socket was inserted could the neutral and live wires, which were blocked by a spring-loaded flap, be contacted.
Seven years later, the British Institute of Standards and Technology (BSI) introduced BS 1363, the standard for plug and socket systems. This mandated the use of safety doors on sockets, laying the foundation for global socket safety. Following this, some Asian countries developed shutters, and gradually, this design became universally adopted.
Since 1970, the shutter design has become more robust and durable, with more complex mechanisms, and it has become the standard for safety sockets in many countries today. It is used in a variety of sockets, including rail sockets and desk sockets.
Can we use sockets without protective shutters?
Without a safety door, you can still get electricity through the socket, but there is a major safety hazard. The charged socket can be seen through the socket of the socket. If you accidentally insert it with metal, especially some children with greater curiosity, Easy to get an electric shock, causing very serious consequences. With a safety door, even if a hard metal rod is used for insertion, it can also play a good protective role and reduce the risk of use.
In Conclusion
Socket protection is an essential function that can prevent electric shock and protect children from the danger of electric shock. With the development of technology, sockets will be equipped with many other functions to better suit human use, such as surge protection, overload protection, grounding protection, etc.,