Principle Of Series Surge Protector

I believe that all readers have come into contact with surge protectors before reading this article, and have a certain understanding of the installation method and working principle of surge protection device. As we all know, the principle of surge protective device is simply to quickly discharge lightning current to the grounding device in the form of a short circuit. For this reason, it is usually connected to the line in parallel. Some customers have asked me why some surge protectors are connected to the line in series? Today, I will show you the principle of series surge protectors.

First of all, we need to make it clear that whether it is in series or in parallel, the surge protector must protect our lines with the same working principle. The reason why the series surge protector can be connected to the line in series is because of its internal structure. It has three interfaces, one end is the incoming line end, one end is the outgoing line end, and one end is the grounding end. Among them, the internal part is equivalent to a surge protector connected to the line in parallel. Therefore, it is also a parallel structure like a parallel surge protector.

So what is the difference between a series surge protector and a parallel surge protector? The answer is yes. The series surge protector has beautiful appearance, convenient wiring, simple maintenance, and small space, but it has a fatal disadvantage, which is the insertion loss. Therefore, in actual use, most of our surge protectors still use parallel surge protectors. Only in signal lightning protection, series surge protectors are widely used.