A voltage sag monitoring device

Abstract

The present invention relates to the technical field of electric equipment, in particular to a voltage sag monitoring device, comprising a housing, the inner cavity of the housing is bolted with a support plate, and the left and right sides of the top of the support plate are bolted with baffles , and the top of the baffle is bolted to the inner wall of the housing, the top of the housing is provided with ventilation slots, the left and right sides of the housing are embedded with installation frames, and the installation frame and the inner cavity of the housing Connectivity; the invention has the advantages of being able to quickly install the circuit board, reducing the difficulty of maintenance, effectively improving the heat dissipation effect, preventing overheating and damage to electronic components, and improving the monitoring work efficiency. The safety and stability are poor, it is not convenient to install and replace the circuit board, and the heat dissipation effect of the monitoring device is poor, and the electronic components are prone to damage due to overheating, which will lead to the problem of reduced working efficiency of the voltage sag monitoring device.

Description

technical field [0001] The invention relates to the technical field of power equipment, in particular to a voltage sag monitoring device. Background technique [0002] With the development of power electronic devices, especially the continuous increase of sensitive loads such as computer equipment, microelectronic equipment and power electronic equipment, the requirements of power users on the power supply quality of power distribution systems are increasing. Voltage sag refers to an event in which the rms value of the supply voltage drops suddenly in a short period of time. The Institute of Electrical and Electronics Engineers defines it as the drop in the rms value of the voltage to within the range of 90% to 10% of the rated value, and the duration is 0.5 to 30 cycles, in which the ratio of the voltage rms value at the time of sag to the rated voltage rms value is defined as the sag amplitude, and the time between the occurrence and the end of the sag is defined as the du...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a voltage sag monitoring device, which can quickly install the circuit board, reduce the difficulty of maintenance, and can effectively improve the heat dissipation effect, prevent overheating and damage of electronic components, and thus improve the monitoring work efficiency. It solves the problem that the currently used voltage sag monitoring device is poor in safety and stability, it is not convenient to install and replace the circuit board, and the heat dissipation effect of the monitoring device is poor, and the electronic components are prone to damage due to overheating, which will cause the voltage sag monitoring device The problem of reduced work efficiency

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