JJG 984-2004 接地导通电阻测试仪

中华人民共和国国家计量检定规程

JJG984-2004

接地导通电阻测试仪

Earth一ContinuityTesters

2004一03一02发布2004一06一02实施

国家质量监督检验检疫总局发布

JJG984-2004

、。。心.心。心.护

接地导通电阻测试仪检定规程产。.0.O.补。.钾口.0.0.0.0.0.~~乙JJG984-2004

VerificationRegulationofEarth一ContinuityTesters、.o.o.o.o.o.o.o.o.o.o.o.o.o.o

本规程经国家质量监督检验检疫总局2004年03月02日批准，并自2004年06月02日起施行。

归口单位:

主要起草单位:

参加起草单位:

全国电磁计量技术委员会广东省计量科学研究所

中国计量科学研究院武汉龙成电气设备厂

本规程委托全国电磁计量技术委员会负责解释

JJG984-2004

本规程主要起草人:

罗旭东

李晓莉

吴进祥

何韵

(广东省计量科学研究所)

(广东省计量科学研究所)

(广东省计量科学研究所)

(广东省计量科学研究所)

参加起草人:王昊(中国计量科学研究院)

曹云飞(武汉龙成电气设备厂)

JJG954-2004

目录

2

3

4

4.1

4.2

4.3

4.4

4.5

5

5.1

5.2

5.3

5.4

6

6.1

6.2

6.3

6.4

6.5

范围························。·························，············??(1)引用文献···························································??(1)概述···················。·········，·············。··················。···。·?(1)计量性能要求·。····················································??(1)最大允许误差········································。。··········??(1)准确度等级····················································??(2)分辨力··························································??(2)报警预置误差····················································??(3)试验电流设置(调节)误差·······································??(3)通用技术要求·。····················································??(3)外观···························································??(3)结构····························································一(3)泄漏电流······················································??(3)介电强度································。··················。··。····??(3)计量器具控制······················································??(3)检定条件·······，·················································。·?(3)检定项目························································??(4)检定方法·································............········。···??(4)检定结果的处理························。·············??(9)检定周期·······················································??(10)

JJG984-2004

接地导通电阻测试仪检定规程

1范围

本规程适用于交、直流接地导通电阻测试仪的首次检定、后续检定和使用中检验。本规程也适用于综合测试仪中的接地导通电阻测试部分的检定。本规程不适用于测量接地导体与大地之间电阻的接地电阻表及类似用途的接地电阻表的检定。

2引用文献

本规程引用下列文献:JF1059-199《测量不确定度评定与表示》JF1015-2002《计量器具型式评价和型式批准通用规范》GB/T4793.1-195《测量、控制和实验室用电器设备的安全要求，第一部分:通用要求》GB/T4706.1-198《家用和类似用途电器的安全通用要求》JF1001-1998《通用计量术语及定义》使用本规程时，应注意使用上述引用文献的现行有效版本。

3概述

接地导通电阻测试仪，是用于测量交流电网供电的电器设备(如家用电器、电动电热器具、医用电气设备及测量、控制和试验室用电气设备等)的可触及金属壳体与该设备引出的安全接地端(线)之间导通电阻的仪器。接地导通电阻测试仪是通过输出交流或直流电流，施加于被测试体的可触及金属壳体与其安全接地端(线)之间，并测量电流流过被测体所产生的压降，然后通过电压和电流之比得出被测试体的接地导通电阻值。它主要由电流源、电压测量、输出电流设置或调节、声光报警、指示装置等部分组成。按指示装置可分为数字式和模拟式。在本规程中将接地导通电阻测试仪简称为数字式测试仪和模拟式测试仪。

4计t性能要求