Grounding resistance measuring tool

Abstract

The invention relates to the technical field of grounding resistance measuring instruments. The grounding resistance measuring tool comprises a box body, and a fixed platform is fixedly installed at the top of an inner cavity of the box body; a main board is fixedly installed at the top of the fixed platform, and a heat dissipation opening is formed in the bottom of the fixed platform and locatedin the left side of a cavity of the box body; and a fixed device is fixedly installed in the middle of the heat dissipation opening. According to the grounding resistance measuring tool, a heat dissipation mechanism and an air inlet are arranged at the bottom of the main board; fan blades of the heat dissipation mechanism rotate, and hot air in the box body is driven to be discharged out of the box body, so the fresh cold air continues to enter the box body from the air inlet and the cold air takes away heat on the mainboard and is discharged through the heat dissipation opening, so that primary air circulation is completed; hot air in the box body can be discharged in time through the cold air circulation, the temperature in the box body is kept constant, and the working performance of components cannot be reduced.

Description

technical field [0001] The invention relates to the technical field of grounding resistance measuring instruments, in particular to a grounding resistance measuring tool. Background technique [0002] The grounding resistance tester is a new type of digital grounding machine that abandons the traditional manual power generation method, adopts advanced large-scale integrated circuits, and uses DC / AC conversion technology to combine the three-terminal button and four-terminal button measurement methods into one model. Resistance tester. [0003] The existing grounding resistance tester generally puts the measuring instrument in the box, and then opens the box to use it. However, there are certain disadvantages in this way of use. For example, the box is sealed, and the panel of the instrument is in contact with the The gap between the openings of the cabinet is relatively small, which can easily cause the components under the motherboard to release a lot of heat when they are...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a grounding resistance measurement tool, which has the advantages of timely cooling inside the box to ensure the working performance of the components, and the overall rising top cover prevents rainwater from entering the inside of the box to ensure the safety of the instrument. During the use of the traditional grounding resistance tester, the internal heat dissipation of the box will be poor, which will cause the working temperature of the components inside the box to be too high, which will affect the working performance of the components.

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