Earth Resistance Measurement Tool

Abstract

The invention relates to the technical field of grounding resistance measuring instruments, and discloses a grounding resistance measuring tool, including a box body, a fixed platform is fixedly installed on the top of the inner cavity of the box, a main board is fixedly installed on the top of the fixed platform, and the fixed platform The bottom of the box is located on the left side of the box cavity, and a heat dissipation port is opened, and a fixing device is fixedly installed in the middle of the heat dissipation port. The grounding resistance measurement tool is equipped with a heat dissipation mechanism and an air inlet at the bottom of the main board, and through the rotation of the fan blades of the heat dissipation mechanism, the hot air inside the box is driven out of the box, and the fresh cold air continues to enter the box from the air inlet. Inside the box, the cold air will take away the heat on the motherboard and discharge it through the cooling vents, thus completing an air cycle. Through such a cold air circulation, the hot air inside the box can be discharged in time, so that the inside of the box The temperature is kept at a constant temperature so that the working performance of the components will not decline.

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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