Leakage current sensor

Abstract

The invention discloses a leakage current sensor. The leakage current sensor comprises a current monitoring circuit and a signal detection assembly; the leakage current sensor is divided into an acquisition end and a measurement end; the acquisition end is provided with a wiring terminal; the measurement end is provided with a connection structure matched with the wiring terminal; the acquisition end and the measurement end are detachably combined and connected with each other; the current monitoring circuit is arranged in the acquisition end; the signal detection assembly is arranged in the measurement end; and the acquisition end is of a lantern ring structure, sleeves the bottom of a connecting part of a grounding end of a lightning arrester before the lightning arrester is installed, and the acquisition end is normally fixed on the connecting part after the lightning arrester is installed. According to the leakage current sensor of the invention, leakage current measurement and efficient maintenance replacement operation of the lightning arrester can be realized.

Description

technical field [0001] The invention relates to a leakage current sensor used in the field of lightning arrester fault detection. Background technique [0002] The existing lightning arrester leakage current sensor is installed in the form of semi-permanent connection with the lightning arrester. However, compared with the arrester, the service life of the signal measuring part of the sensor is much lower than that of the arrester and its signal measuring secondary circuit. At the same time, when replacing the leakage current sensor, it is necessary to carry out power outage work, remove the lightning arrester, make the sensor more slippery, and then install the lightning arrester. The whole process is laborious and laborious, which seriously affects the working efficiency and stability of the system. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies of the prior art and provide a leakage current sensor, which can reali...

AI Technical Summary

Problems solved by technology

However, compared with the arrester, the service life of the signal measurement part of the sensor is much lower than that of the arrester and its signal measurement secondary circuit

At the same time, when replacing the leakage current sensor, it is necessary to perform power outage work, remove the lightning arrester, make the sensor more slippery, and then install the lightning arrester. The whole process is laborious and laborious, which seriously affects the working efficiency and stability of the system.

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