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What is the ground resistance? Presumably most electrical engineering designers can’t be familiar with it. In many circuits, it is necessary to ground. The ground resistance is the resistance between the ground wire and the ground. Most of the land mentioned here refers to the earth; for a circuit board, it is the designated ground line. No matter what system, the smaller the ground resistance is required. With the advent of the era of electronic information, people’s understanding of lightning protection has gradually deepened, and grounding technology has been further developed. The ground resistance measurement is an important content of lightning protection testing. Its measurement value is an important indicator of the quality acceptance of lightning protection projects.

For the measurement of large -scale grounding devices, the three -level method measurement is generally measured with different frequency ground impedance tester. For the instrument with conventional measurement of ground resistance, due to the small output current, the current auxiliary electrode, the voltage auxiliary electrode and the ground pole are close. Measurement is easy to produce large errors and directly affect the quality assessment of lightning protection projects. To explore how to perform routine ground resistance in the ground resistance more accurately. Today, I will share with you: the measurement method of ground resistance during building electrical lightning protection testing and completion acceptance process. After reading the article, I hope to bring some help to the majority of electrical engineering designers.

建筑物防雷接地电阻测量方法

(1 Introduction

建筑物防雷接地电阻测量方法

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(2) The basic concepts of ground resistance and method of testing of ground resistance are commonly used:

(3) The voltage drop and potential distribution around the ground body:

建筑物防雷接地电阻测量方法

(4) Method to shorten the wiring distance measured ground resistance:

(5) Short -term measurement inside large -scale networks:

建筑物防雷接地电阻测量方法

(6) Article summary:

建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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建筑物防雷接地电阻测量方法

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