Surge protective device with detection function

Abstract

The invention relates to a surge protective device with a detection function. A surge protective unit (1) and a sensor unit (2) are encapsulated in the same encapsulated shell and are arranged in a surge protector (12), the functions of surge protection and detection are achieved at the same time; the surge protective unit (1) and the sensor unit (2) have been subjected to parameter matching without configuration selection; a detection circuit on which the sensor unit (2) is positioned and a surge protective circuit on which the surge protective unit (1) is positioned are electrically isolated, thereby preventing the detection circuit and the sensor unit (2) from being intervened by surge current which is a magnetic field, being convenient to mount, effectively reducing the space and reducing fault points.

Description

technical field [0001] The invention relates to a surge protection device with a detection function, which belongs to the technical field of surge protection for electronic and electrical equipment. technical background [0002] Lightning and the line surge caused by it and the line surge caused by other reasons are important reasons for the aging and damage of electrical and electronic equipment. Installing surge protectors on metal lines such as power lines, signal lines, and control lines connected to electronic equipment is one of the important measures for lightning protection. In this technical field, an important problem currently exists is that while the surge protector is protecting the equipment, its own components will gradually deteriorate until they are completely damaged, or they will be directly damaged under excessive surge impact, or cause The switch-type surge protection device produces freewheeling; for the power surge protector, its damage or cause damag...

AI Technical Summary

Problems solved by technology

In this technical field, an important problem currently exists is that while the surge protector is protecting the equipment, its own components will gradually deteriorate until they are completely damaged, or they will be directly damaged under excessive surge impact, or cause The switch-type surge protection device produces freewheeling; for the power surge protector, its damage or cause damage includes short circuit (including freewheeling, hereinafter omitted) and leakage current increase causing heating; for signal surge protector, The damage phenomenon is generally the increase of the impedance of the surge protector to signal transmission and the short circuit of the surge protector.

There are still problems in the above technical methods: 1. The measuring components are installed in the surge protector, which will easily cause interference or damage to the measuring components when the surge current is released, making the measurement results inaccurate, causing false alarms and misoperations ;2. The parameters of the measurement components used by different surge protection devices are different, which makes the selection of the product design and manufacturing process complicated; 3. The measurement components and surge protection devices are installed independently in the surge protector, occupying In the interior space, the line connection relationship is complicated, the fault points increase, and the installation process increases and the difficulty increases

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