A new electrical cabinet for power transmission and distribution system

Abstract

The invention relates to a new type electric cabinet for power transmission and distribution systems. The cabinet comprises a cabinet body. A working indicator lamp, a switch and a plurality of drawer units are arranged on the front of the cabinet body. A heat dissipation mechanism is arranged on one side of the cabinet body. According to the new type electric cabinet for the power transmission and distribution systems, the pressure generated by a glass bead on a spring is detected through a pressure sensor on a limiting unit, therefore, the rotation distance of a rotation wheel is detected, the rotation distance is used for controlling the moving distances of the drawer boxes, the movement of the drawer units in mounting guide rails is limited, and a worker can carry out corresponding work conveniently. Moreover, in a signal amplifier circuit, OP90 is a high-performance and micro-power-consumption operational amplifier, and therefore, the power consumption of the signal amplification circuit is greatly reduced. Moreover, the OP90 is characterized in low offset voltage and high gain. The signal processing precision of the signal amplification circuit is greatly improved. The reliability of the electric cabinet is improved.

Description

technical field [0001] The invention relates to a new type of electrical cabinet for power transmission and distribution systems. Background technique [0002] The electrical cabinet is to assemble switchgear, measuring instruments, protective appliances and auxiliary equipment on a closed or semi-closed metal cabinet or screen width according to the requirements of electrical wiring to form a low-voltage power distribution device. The main function is to distribute power to each Load parts, and power-off protection when the circuit is short-circuited, overloaded and leakage. Electrical cabinets are widely used mainly in chemical industry, environmental protection industry, power system, metallurgical system, industry, nuclear power industry, fire safety system, transportation industry and so on. [0003] In order to achieve multi-channel control functions, electrical cabinets usually use drawers to integrate each control area into a single drawer cabinet, thereby reducing ...

AI Technical Summary

Problems solved by technology

However, during the operation process, each drawer unit on the electrical cabinet usually lacks corresponding limit measures, causing the operator to open all the drawers when moving the drawers. Usually, for the convenience of operation, only part of the drawers need to be moved. Not only that, In the electrical cabinet, it is necessary to amplify and test the various signals connected, but usually the signal amplification circuit not only consumes a lot of power, but also has low precision, which reduces the practical value of the electrical cabinet

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