A low-voltage intelligent power supply box for electrical test

Abstract

The invention discloses an electric test low-voltage intelligent power supply box, comprising a box body, wherein a box cover integrally formed with the box body is arranged on the box body. The hingeof the box cover and the box body is provided with a waterproof groove. The inside of the box is divided into a power line storage tank and an electric appliance installation storage tank. The notchof the electric appliance mounting storage tank is provided with a disk surface covering the notch. The low-voltage intelligent power supply box of the electric test completely solves the damage of valuable test instruments and equipment caused by misconnection of the test power supply. At the same time, the personal electric shock accident of the test instrument operator is avoided, and the personal safety of the test operator is improved. The intelligent prompt of the low-voltage intelligent power supply box further improves the safety management level of the site.

Description

technical field [0001] The invention relates to the technical field of electrical equipment maintenance, in particular to a low-voltage intelligent power supply box for electrical testing. Background technique [0002] The development of the low-voltage intelligent power box for electrical testing has further guaranteed and improved the personal safety and testing equipment safety of the State Grid Corporation of China's annual electrical equipment maintenance and testing work. [0003] The traditional low-voltage power supply box for maintenance and testing is nothing more than a simple, large box without waterproof function. It is equipped with two-way knife switch, leakage protector and multiple three-hole or two-hole sockets inside. Disadvantages of the original low-voltage test power box: 1) The box body of the power box has poor anti-collision performance, is easy to be damaged, and has poor sealing performance and is not rainproof; 2) The power box has no identificati...

AI Technical Summary

Problems solved by technology

Disadvantages of the original low-voltage test power box: 1) The box body of the power box has poor anti-collision performance, is easy to be damaged, and has poor sealing performance and is not rainproof; 2) The power box has no identification of AC and DC voltage, frequency and Prompt alarm function

If the DC power supply is mistakenly connected (the power supply of the substation is mixed with AC and DC in the same box), the transformer winding of the working power supply of the intelligent tester equipment will be burned, and the sampling and logic modules of the test equipment will continue to be damaged, resulting in tens of thousands of Even hundreds of thousands of intelligent electronic test instruments are damaged or scrapped, seriously affecting the smooth progress of the power outage maintenance test work or delaying the power outage maintenance plan, and even leaving hidden dangers to the safe operation of the power grid, which increases the economic burden of enterprises; 3) The original low-voltage test power supply box does not have a protective grounding terminal. When the shell of the intelligent test instrument cannot be grounded well, it may be caused by defective leakage of the test instrument itself, induced voltage under a strong electric field, or sudden power failure during the test. The sudden change in the voltage of the tested equipment will cause the counter voltage of the test instrument to fail to leak into the ground through the protective grounding, which will directly threaten the personal safety of the test instrument operator.

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