What Is The Kevin Connection Method Of Surge Protector

There are two ways to connect a surge protector: Kevin connection and branch connection. Of the two connection methods, we often use branch connection, connecting the surge protection device to the line in the form of a branch. This method is simple, convenient, safe and stable, so it is also commonly used. So what is the Kevin connection of the surge protector? What are its characteristics? Today, the editor will take you to learn about the Kevin connection of the surge protective device.

According to relevant industry regulations (GB51348-2019), the line length of the surge protector branch needs to be within a certain length to ensure effective lightning protection. The wire length a+b+c needs to be kept within 0.5m. When the installation conditions in the distribution box are relatively good and the surge protector can meet the standard requirement of a wiring length of less than 0.5m, we generally adopt the branch connection method;

However, when the surge protector is installed in the distribution box, if the wire length cannot be within 0.5m, we use the Kevin connection method, so that the line length only needs to ensure that c is less than 0.5m, and the Up residual voltage value can also reach the withstand voltage value of the protected equipment.

Compared to the simplicity and convenience of the branch connection method, it meets the requirements of most occasions and is also a more common connection method. The characteristics of the Kevin connection method of the surge protector are: 1. The Up value is much lower than the conventional branch connection method; 2. The Kevin connection method requires cutting the wire, which destroys the insulation layer of the wire. The installation is more complicated and requires higher requirements, which is time-consuming and labor-intensive. If the surge protector used is not designed with a special Kevin terminal, it will cause poor contact and easy loosening, resulting in fire. Therefore, although the Kevin connection has the advantage of a low UP value, it is not commonly used;

Through the introduction of this article, I believe that everyone has a deeper understanding of what the Kevin connection method of the surge protector is and the occasions it is suitable for. If you still have problems with the choice of wiring method in actual situations, please call us for consultation.