An insulation monitoring device

Abstract

The invention discloses an insulation monitoring device, which comprises an insulation monitoring device body, wherein a small bus box provided with an opening in one side is fixedly mounted on the insulation monitoring device body; rectangular through holes are formed in the inner walls of two sides of the small bus box; sliding plates are mounted in the rectangular through holes in a sliding manner; the mutually close sides of the two sliding plates extend into the small bus box and are in contact with each other; two first through holes are formed in the inner wall of the top of the small bus box; first grooves are formed in the tops of the two sliding plates; pin rods are mounted in the first grooves in a sliding manner; the top ends of the pin rods extend into the corresponding firstthrough holes; and the pin rods are connected with the inner walls of the corresponding first through holes in a sliding manner. The insulation monitoring device is simple in structure and convenientto operate; by simple pulling operation, fixing of the two sliding plates in the small bus box can be quickly relieved, so that the small bus box can be conveniently opened for maintenance to contribute to safe operation of equipment; and great convenience is brought to people.

Description

technical field [0001] The invention relates to the technical field of electric equipment, in particular to an insulation monitoring device. Background technique [0002] With the continuous development of the economy, people's demand for electricity is increasing, and the equivalent power equipment is put into operation. The insulation monitoring device is one of the very important ones, which is mainly used to monitor the neutral point non-effectively grounded power system. , to ensure the safe operation of the power grid. After retrieval, the patent document with the authorized announcement number CN2804882Y discloses an insulation monitoring device, which mainly consists of an insulation monitoring device body, a capacitor bank installed in the insulation monitoring device body, measuring devices, current / It is composed of a voltage converter, a voltage display and an alarm device. The capacitor bank is connected to the power grid with a star connection, and its neutral...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of the economy, people's demand for electricity is increasing, and the equivalent power equipment is put into operation. The insulation monitoring device is one of the very important ones, which is mainly used to monitor the neutral point non-effectively grounded power system. , to ensure the safe operation of the power grid. After retrieval, the patent document with the authorized announcement number CN2804882Y discloses an insulation monitoring device, which mainly consists of an insulation monitoring device body, a capacitor bank installed in the insulation monitoring device body, measuring devices, current / It is composed of a voltage converter, a voltage display and an alarm device. The capacitor bank is connected to the power grid with a star connection, and its neutral point is grounded. After the measuring device measures the phase current of the capacitor bank, the current value is converted into a voltage by a current / voltage converter. The voltage display shows the three-phase-to-ground voltage of the system. The alarm device is connected to the neutral line of the capacitor bank to measure the zero-sequence current of the capacitor bank. The alarm device displays the insulation status of the system. After being applied in power plants and substations, it can Eliminate the L-C resonance circuit formed by the inductance of the voltage transformer and the capacitance of the system to the ground, thereby effectively avoiding the fundamental frequency, multiplication frequency, and frequency division resonance of the voltage transformer, and avoiding the fuse blowing, explosion, and mutual inductance of the voltage transformer caused by resonance However, its design still has shortcomings. Its small busbar room does not have a maintenance port that is easy to open and close. It is not convenient to check the busbar, which is not conducive to the safe operation of the equipment. Therefore, we propose an insulation monitoring device to solve the above problems

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