Electric-leakage monitoring device

Abstract

The invention relates to a device capable of detecting electric-leakage signals timely, in particular to an electric-leakage monitoring device. The electric-leakage monitoring device comprises a main control module, an electric-leakage detecting module, an analog electric-leakage module, an alarm module, a display module and a power module. The main control module is connected with the electric-leakage detecting module, the analog electric-leakage module, the alarm module and the display module respectively, and the power module powers the entire device. The electric-leakage monitoring device is applicable to electric power departments.

Description

technical field [0001] The invention relates to a device capable of detecting leakage signals in time, in particular to a leakage monitoring device. Background technique [0002] At present, various protection devices for low-voltage distribution transformers (referred to as transformers) include various high-voltage circuit breakers, lightning arresters, etc. Such protection measures, but due to the variety of transformer capacity levels and complex lines, it is difficult to be foolproof with various protection measures, especially the leakage fault of the transformer, which may occur in any part, and the general leakage protection is in the main circuit. Moreover, whether the leakage protection circuit itself is effective or not can not be monitored in real time, which leads to the failure of timely detection of transformer leakage faults. Due to the aging of the power grid, changes in the production environment, and grounding points in the power grid, short circuits to gr...

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Problems solved by technology

[0002] At present, various protection devices for low-voltage distribution transformers (referred to as transformers) include various high-voltage circuit breakers, lightning arresters, etc. Such protection measures, but due to the variety of transformer capacity levels and complex lines, it is difficult to be foolproof with various protection measures, especially the leakage fault of the transformer, which may occur in any part, and the general leakage protection is in the main circuit. Moreover, whether the leakage protection circuit itself is effective or not can not be monitored in real time, which leads to the failure of timely detection of transformer leakage faults. Due to the aging of the power grid, changes in the production environment, and grounding points in the power grid, short circuits to ground will occur, cables and motors will be damaged. Leakage accidents often occur in the windings. After the leakage accident occurs, it will not only lead to personal electric shock accidents, but also cause single-phase grounding, which will develop into a short circuit between phases, and then cause electrical fire accidents, which will bring many adverse effects to normal production and life.

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