Line fault indicator

Abstract

The invention provides a line fault indicator which comprises a shell, an iron core, a coil and an annular magnet. The shell is a hollow cylinder. A rotating body is installed in the shell and is internally provided with an annular magnet. The above shell, the rotating body and the annular magnet are concentric and are connected together by a pin. Tooth-shaped projections in mutual engagement are distributed at the boss of the bottom center of the shell and the lower surface of the center of the rotating body. The shell is connected to a connection plate which has two downward projecting hollow grooves. Two ends of the iron core are inserted into the hollow grooves. Coils are wound around iron cores. The connection plate is connected to an upper cover. The line fault indicator can receive the pulse signal emitted by a control circuit when a line is failed, a visual window is turned out of the rotating shaft, and the patrol personnel are reminded of a fault position. Compared with the prior art, a fault reminding state can be maintained through the energization of the electromagnet for one time, the continuous energization is not needed, and the safety is improved.

Description

technical field [0001] The invention belongs to the field of detecting line faults, in particular to a line fault indicator. Background technique [0002] The most common faults in high-voltage transmission lines are single-phase ground faults and phase-to-phase short-circuit faults. When a high-voltage transmission line fails, if there is no online detection device, the only way to find the faulty section by segmental closing and blindly patrol the line Backward practices will cause a great loss of human and financial resources. The fault indicator used in the prior art uses an electromagnet to drive the indicating mechanism to make an indicating action when a line fault is detected. However, the electromagnet will generate heat or even spontaneously ignite when it is powered on for a long time, which poses a great safety hazard. Contents of the invention [0003] In view of this, the present invention aims to provide a line fault indicator, which prompts line inspectors...

AI Technical Summary

Problems solved by technology

[0002] The most common faults in high-voltage transmission lines are single-phase ground faults and phase-to-phase short-circuit faults. When a high-voltage transmission line fails, if there is no online detection device, the only way to find the faulty section by segmental closing and blindly patrol the line Outdated practices will cause a great loss of human and financial resources

However, the fault indicator used in the prior art uses an electromagnet to drive the indicating mechanism to make an indicating action when a line fault is detected. However, the electromagnet will generate heat or even spontaneously ignite when it is powered on for a long time, which poses a great safety hazard.

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