Voltage sag monitoring device

Abstract

The invention relates to the technical field of power equipment, and especially relates to a voltage sag monitoring device. The device comprises a shell, a supporting plate is bolted to the inner cavity of the shell, baffles are bolted to the left side and the right side of the top of the supporting plate, the tops of the baffles are bolted to the inner wall of the shell, and a ventilation grooveis formed in the top of the shell. Mounting frames are embedded in the left side and the right side of the shell correspondingly and communicate with the inner cavity of the shell. The voltage sag monitoring device has the advantages that a circuit board can be rapidly installed, the maintenance difficulty is reduced, the heat dissipation effect can be effectively improved, overheating damage of electronic components is prevented, then the monitoring work efficiency can be improved, and the problems that an existing voltage sag monitoring device is poor in safety and stability, inconvenient toinstall and replace the circuit board and high in cost performance, the heat dissipation effect of the monitoring device is poor, and electronic components are easy to damage due to overheating, so that the working efficiency of the voltage sag monitoring device is reduced are solved.

Description

technical field [0001] The invention relates to the technical field of electric 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, power users have increasingly higher requirements for power supply quality of power distribution systems. Voltage sag refers to an event in which the root mean square value of the supply voltage drops suddenly in a short period of time. The Institute of Electrical and Electronics Engineers defines it as the voltage root mean square value falling within 90% to 10% of the rated value, and the duration is 0.5 to 30 cycles, where the ratio of the root mean square value of the voltage during the sag to the root mean square value of the rated voltage is defined as the sag amplitude, and the time between the occurrence and the ...

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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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