一、产品介绍
DY-3002双钳多功能接地电阻测试仪又叫双钳接地电阻测试仪。其集合多种测量方法于一体的 接地电阻测试仪, 该仪表除了具有传统打辅助地极测接地电阻的功能外,还具备了无辅助地极测量的独特功能。它采用了超大LCD灰白屏背光显示和微处理机技术,通过微处理器控制 4线法、3线法和简易2线法、选择法、双钳法测量接地电阻测试。采用大口径电流钳设计,利用双钳口测量技术,无需打辅助地极、无需将接地体与设备隔离,实现了在线测量。广泛应用于电信、电力、气象、机房、油田、电力配电线路、铁塔输电线路、加油站、工厂接地网、避雷针等。仪表具有测试精准、快速、简捷、稳定可靠等特点。
DY-3002双钳多功能接地电阻测试仪由微处理器控制,可精准检测接地电阻、土壤电阻率、接地电压、直流电阻和交流电流。其使用了快速滤波技术可将干扰减至 小。同屏显示辅助电极的电阻值,方便判断由于环境因素带来的测量误差,便于更准确测量接地真实阻值。同时存储500组数据,可通过监测软件在线监测数据,USB数据上传PC并具有数值保持及智能报警提示等独特功能。
DY-3002双钳多功能接地电阻测试仪由主机、监控软件、测试线、USB线、接地针组成,具有历史数据读取、查阅、保存、报表、打印等功能。
二、技术参数
1.量程及精度
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测量功能
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测量范围
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精度
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分辨率
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二三四线法测量接地电阻(Re)
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0.00Ω~29.99Ω
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±2%rdg±5dgt(注1)
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0.01Ω
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30.0Ω~299.9Ω
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±2%rdg±3dgt
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0.1Ω
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300Ω~2999Ω
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±2%rdg±3dgt
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1Ω
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3.00kΩ~30.00kΩ
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±2%rdg±3dgt
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10Ω
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直流电阻(R—)
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0.0Ω~299.9Ω
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±2%rdg±3dgt
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0.1Ω
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300Ω~2999Ω
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±2%rdg±3dgt
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< width="132" valign="center" ="width:99.2000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
1Ω
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3.00kΩ~30.00kΩ
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±2%rdg±3dgt
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10Ω
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选择法测量接地电阻(Re)
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0.00Ω~29.99Ω
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±2%rdg±5dgt(注1)
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0.01Ω
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30.0Ω~299.9Ω
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±2%rdg±3dgt
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0.1Ω
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300Ω~3000Ω
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±2%rdg±3dgt
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1Ω
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双钳法测量接地电阻(Re)
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0.01Ω~0.99Ω
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±10%rdg±10dgt
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0.01Ω
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1.0Ω~9.9Ω
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0.1Ω
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10Ω~100Ω
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1Ω
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< ="height:19.8500pt;page-break-inside:avoid;">< width="120" valign="center" rowspan="6" ="width:90.2500pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:none;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
土壤电阻率(ρ)
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0.00Ωm~99.99Ωm
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ρ=2πaR (注2)
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0.01Ωm
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100.0Ωm~999.9Ωm
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0.1Ωm
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1000Ωm~9999Ωm
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1Ωm
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10.00kΩm~99.99kΩm
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10Ωm
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100.0kΩm~999.9kΩm
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100Ωm
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1000kΩm~9999kΩm
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1kΩm
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接地电压
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AC 0.00~100.0V
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±2%rdg±3dgt
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0.01V
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交流电流
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AC 0.0mA~1000A
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±2%rdg±3dgt
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0.1mA
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注:1. 基准条件:Rh Rs<100Ω时的精度。
工作条件:Rh max=3kΩ+100R<50kΩ;Rs max=3kΩ+100R<50kΩ
2.取决于R的测量精度而定,π=3.14, a:1 m~100m;
一般规格
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功 能
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接地电阻、土壤电阻率、直流电阻、接地电压、交流电流、
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环境温度湿度
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23℃±5℃,75%rh以下
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干扰电压
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<20V(应避免)
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干扰电流
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<2A(应避免)
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测R时电极间距
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a>5d
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测ρ时电极间距
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a>20h
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电 源
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DC 6V 4.5Ah铅酸蓄电池 连续待机100小时以上
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背 光
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可控背光,适合昏暗场所使用
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测量方式
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四线、三线法测量、简易二线、选择法、双钳法测量接地电阻
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测量方法
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二三四线法测量:变极法,测量电流20mA Max
土壤电阻率:四极法
选择法测量:变极法,测量电流20mA Max
双钳法:非接触互感测量法,测试电流1mA Max
直流电阻:变极法
交流电流:平均值整流(钳形)
接地电压:平均值整流(S-DY-接口间)
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测试电压波形
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正弦波
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测试频率
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128Hz
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短路测试电流
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AC 20mA max
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开路测试电压
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AC 28V max
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
电极间距范围
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
1m~100m
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
显示模式
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4位超大LCD显示,带背光
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测量指示
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测量中LED闪烁指示
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LCD尺寸
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
111mm×68mm
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
LCD显示域
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
108mm×65mm
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
仪表尺寸
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
长宽高:277.2mm×227.5mm×153mm
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
电流钳尺寸
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
长厚高:101mm×27mm×214mm
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
测 试 线
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
4条:红色15m,黑色15m,黄色10m,绿色10m各1条
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
简易测试线
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
2条:黄色1.5m,绿色1.5m各1条
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
辅助接地棒
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
4根:φ10mm×200mm
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
电 流 钳
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
2把:香蕉插头
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
电流钳口径
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
φ50mm
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
电流钳引线
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
长2m
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
测量时间
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< width="519" valign="center" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
交流电流:约2次/秒
对地电压:约2次/秒
接地电阻、土壤电阻率:约7秒/次
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
线路电压
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< width="519" valign="center" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
AC 100V以下测量(接地电压测量功能不能用于测量商用电)
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
USB接口
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< width="519" valign="center" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
具有USB接口,存储数据可以通过软件上传电脑
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
通 讯 线
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< width="519" valign="center" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
USB通讯线1条,长1.5m
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
数据保持
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< width="519" valign="center" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
保持数据时“HOLD”符号指示
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
数据存储
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< width="519" valign="center" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
500组,“MEM”存储指示,显示“FULL”符号表示存储已满
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
数据查阅
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< width="519" valign="center" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
查阅数据时“MR”符号指示
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
溢出显示
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< width="519" valign="center" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
超量程溢出时“OL”符号指示
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
电流钳低电流指示
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< width="519" valign="center" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
选择法或者双钳法测量时,当CT2接收的电流信号低于0.5mA时,显示“ ”符号,此时应检查CT2电流钳的钳入方向
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
干扰测试
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
自动识别干扰信号,干扰电压高于5V时“NOISE”符号指示
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>
< ="height:25.0500pt;">< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
辅助接地测试
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< width="519" valign="top" ="width:389.8000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:none;mso-border-left-alt:none;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
具有辅助接地电阻值测试功能,0.00kΩ~30.00kΩ(Rh max=3kΩ+100R<50kΩ;Rs max=3kΩ+100R<50kΩ)
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< >< width="148" valign="center" ="width:111.5000pt;padding:0.0000pt 5.4000pt 0.0000pt 5.4000pt;border-left:1.0000pt solid windowtext;mso-border-left-alt:0.5000pt solid windowtext;border-right:1.0000pt solid windowtext;mso-border-right-alt:0.5000pt solid windowtext;border-top:none;mso-border-top-alt:0.5000pt solid windowtext;border-bottom:1.0000pt solid windowtext;mso-border-bottom-alt:0.5000pt solid windowtext;">
报警功能
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测量值超过报警设定值时发出报警提示
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电池电压
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电池电量实时显示,电池电压低时提醒及时充电
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自动关机
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“APO”指示,开机15分钟后自动关机
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功 耗
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待机: 40mA Max(背光关闭)
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开机开背光: 43mA Max
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测量:120mA Max(背光关闭)
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质 量
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仪表: 2430g(含电池)
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电流钳:940g(2把)
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测试线:1300g(含简易测试线)
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辅助接地棒: 850g(4根)
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工作温湿度
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-10℃~40℃;80%rh以下
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存放温湿度
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-20℃~60℃;70%rh以下
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过载保护
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测量接地电阻: H-E、S-DY-各端口间AC 280V/3秒
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绝缘电阻
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20MΩ以上(电路与外壳之间500V)
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耐 压
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AC 3700V/rms(电路与外壳之间)
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电磁特性
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IEC61326(EMC)
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适合安规
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IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、污染度2);IEC61010-031;
IEC61557-1(接地电阻);
IEC61557-5(土壤电阻率);
JJG 366-2004(接地电阻表);
JJG 1054-2009(钳形接地电阻仪)。
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