The probe of arc light protection device is the main part of detecting arc light, which is responsible for collecting arc light signal, so it needs to be highly sensitive and accurate. No matter the arc occurs in front of the probe or in the left, right, upper and lower positions, the probe can collect the arc signal, which will not be affected by the reflection, so that the main control unit can accurately receive the arc signal, send out an alarm, act in time and take protective measures.

        Arc sensor is the probe, which can be placed in any position of the switchgear, generally installed in the bus room to detect bus fault. The structure of the arc light probe includes probe, probe base and probe mounting bracket. The probe is characterized in that the front part of the probe has a conical structure at the beginning of daylighting, showing the shape of bullet head. The back part of the probe is fixedly connected with a mounting convex ring, and the probe base also has a circular groove, so that the mounting convex ring can be clamped in the circular groove, Then, the probe base is fixed on the probe mounting bracket, and the optical fiber is installed behind the probe base, which is compressed by the compression ring.

        For the medium and low voltage switch cabinet and power transmission system fault arc protection, effective and reliable detection of fault and timely protection action is a crucial step in the current power system fault arc protection, so the installation of arc protection device is the right choice.