CN202676807U - 接地电阻测量装置 - Google Patents

接地电阻测量装置 Download PDF

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Publication number
CN202676807U
CN202676807U CN 201220222817 CN201220222817U CN202676807U CN 202676807 U CN202676807 U CN 202676807U CN 201220222817 CN201220222817 CN 201220222817 CN 201220222817 U CN201220222817 U CN 201220222817U CN 202676807 U CN202676807 U CN 202676807U
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China
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power supply
grounding body
voltage
pole
metering device
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Inventor
黄国栋
张伟政
钟浩
孙卉
孙元
丁洋涛
王桂亭
吕利敏
季国剑
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State Grid Corp of China SGCC
Zhengzhou Power Supply Co of Henan Electric Power Co
Zhengzhou Huali Information Technology Co Ltd
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Zhengzhou Power Supply Co of Henan Electric Power Co
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Abstract

本实用新型公开了一种接地电阻测量装置,包括电流表、电压表、电源和被测接地体,所述被测接地体通过电压表与电压极相连;所述被测接地体通过电流表、电源与电流极相连;所述电流表与电源之间设置有隔离变压器;所述电压极与被测接地体之间间隔20米,所述电流极与被测接地体之间间隔40米;所述电压极和电流极均为探针,所述电压表为内阻较小、电压值刻度较细的电压表,所述电源为交流电源。本实用新型因为交流电源经过有隔离变压器,其中性点可以接地。其结构简单,测量精度比较高,抗干扰能力比较强,适应范围比较广。

Description

接地电阻测量装置
一、技术领域:
    本实用新型涉及一种接地电阻测量装置,属于电工日常操作领域。
二、背景技术:
防雷接地作为一项重要的安全保护措施,国标有严格的规定,一般情况下接地体的接地电阻必须小于4欧姆。影响接地电阻的因素很多:接地极的大小(长度、粗细)、形状、数量、埋设深度、周围地理环境、土壤湿度质地等等,为了保证设备的良好接地,利用仪表对接地体接地电阻进行测量是必不可少的。
三、实用新型内容:
本实用新型所要解决的技术问题是:提供一种接地电阻测量装置,来满足实际工作中的需要。
本实用新型为解决技术问题所采取的技术方案是:
一种接地电阻测量装置,包括电流表、电压表、电源和被测接地体,所述被测接地体通过电压表与电压极相连;所述被测接地体通过电流表、电源与电流极相连;所述电流表与电源之间设置有隔离变压器。
所述电压极与被测接地体之间间隔20米。
所述电流极与被测接地体之间间隔40米。
所述电压极和电流极均为探针。
所述电压表为内阻较小、电压值刻度较细的电压表。
所述电源为交流电源。
本实用新型的接地电阻测量装置,因为交流电源经过有隔离变压器,其中性点可以接地。其结构简单,测量精度比较高,抗干扰能力比较强,适应范围比较广。
四、附图说明:
图1为本实用新型的结构示意图。
五、具体实施方式:
    下面结合附图对本实用新型作进一步的说明:
参见图1,一种接地电阻测量装置,包括电流表5、电压表2、电源7和被测接地体1,所述被测接地体1通过电压表2与电压极3相连;所述被测接地体1通过电流表5、电源7与电流极4相连;所述电流表5与电源7之间设置有隔离变压器6;所述电压极3与被测接地体1之间间隔20米,所述电流极4与被测接地体1之间间隔40米,所述电压极,3和电流极4均为探针;所述电压表2为内阻较小、电压值刻度较细的电压表;所述电源7为交流电源。
该实用新型的接地电阻测量装置,因为交流电源经过有隔离变压器6,其中性点可以接地。结构简单,测量精度比较高,抗干扰能力比较强,适应范围比较广。

Claims (6)

1.一种接地电阻测量装置,包括电流表(5)、电压表(2)、电源(7)和被测接地体(1),其特征在于:所述被测接地体(1)通过电压表(2)与电压极(3)相连;所述被测接地体(1)通过电流表(5)、电源(7)与电流极(4)相连;所述电流表(5)与电源(7)之间设置有隔离变压器(6)。
2.根据权利要求1所述的接地电阻测量装置,其特征在于:所述电压极(3)与被测接地体(1)之间间隔20米。
3.根据权利要求1所述的接地电阻测量装置,其特征在于:所述电流极(4)与被测接地体(1)之间间隔40米。
4.根据权利要求1~3任一项所述的接地电阻测量装置,其特征在于:所述电压极(3)和电流极(4)均为探针。
5.根据权利要求1所述的接地电阻测量装置,其特征在于:所述电压表(2)为内阻较小、电压值刻度较细的电压表。
6.根据权利要求1所述的接地电阻测量装置,其特征在于:所述电源(7)为交流电源。
CN 201220222817 2012-05-18 2012-05-18 接地电阻测量装置 Expired - Fee Related CN202676807U (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103529305A (zh) * 2013-10-25 2014-01-22 国家电网公司 一种电力设备接地网接地电阻测试辅助系统
CN103529304A (zh) * 2013-10-25 2014-01-22 国家电网公司 电力设备接地网接地电阻现场测试技术的优化方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103529305A (zh) * 2013-10-25 2014-01-22 国家电网公司 一种电力设备接地网接地电阻测试辅助系统
CN103529304A (zh) * 2013-10-25 2014-01-22 国家电网公司 电力设备接地网接地电阻现场测试技术的优化方法

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Address before: 450006 Huaihe Road, Henan, China, No. 9, No.

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Granted publication date: 20130116

Termination date: 20170518