一、产品介绍
DY-3010接地电阻土壤电阻率测试仪又叫四线接地电阻测试仪或者土壤电阻率测试仪是检验测量接地电阻常用仪表的常用仪表,他采用了超大LCD灰白屏背光显示和微处理机技术,通过微处理器控制的2线、3线、4线法式接地电阻测试及土壤电阻率测试。
DY-3010汇集了许多接地测试功能,可快速 的测量接地网络中的各项参数。是代替传统摇表测量的新一代接地测量仪表。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-3010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。其使用了快速滤波技术可将干扰减至 小。同时存储500组数据。
二、技术参数
1.量程及精度误差
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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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接地电阻(R)
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0.00Ω~30.00Ω
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±2%rdg±5dgt (注1)
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0.01Ω
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30.0Ω~300.0Ω
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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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3.00kΩ~30.00kΩ
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±2%rdg±3dgt
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10Ω
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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 0.00~600V
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±2%rdg±3dgt
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0.01V
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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;
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功 能
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二三四线测量接地电阻、土壤电阻率;
接地电压测量
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环境温度湿度
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23℃±5℃,75%rh以下
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电 源
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1.5V(LR14)碱性电池6节
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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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辅助接地电阻值
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基准条件<100Ω,工作条件<5kΩ
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量 程
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接地电阻:0.00Ω~30.00kΩ
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土壤电阻率:0.00Ωm~9999kΩm
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接地电压:0.00V~600V
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测量方式
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4线、3线法测量、简易2线测量接地电阻
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测量方法
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接地电阻:额定电流变极法
土壤电阻率:四极法
接地电压:平均值整流(S-FR接口间)
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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 (正弦波)
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开路测试电压
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AC 28V max
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电极间距范围
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可设定1m~100m
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换 档
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接地电阻:0.00Ω~30.00kΩ全自动换档
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土壤电阻率:0.00Ωm~9999kΩm全自动换档
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背 光
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可控灰白色背光,适合昏暗场所使用
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显示模式
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4位超大LCD显示,灰白色背光
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测量指示
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测量中LED闪烁
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LCD显示域
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108mm×65mm
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仪表尺寸
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240mm (长)×188mm (宽)×85mm (高)
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标准测试线
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4条:红色15m,黑色15m,黄色10m,绿色10m各1条
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简易测试线
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2条:黄色1.5m,绿色1.5m各1条
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辅助接地棒
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4根
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测量时间
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对地电压:约2次/秒
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接地电阻、土壤电阻率:约7秒/次
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接地电压
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AC 600V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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数据存储
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500组,“MEM”存储指示,显示“FULL”符号表示存储已满
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数据查阅
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查阅数据时“MR”符号指示
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溢出显示
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超量程溢出时“OL”符号指示
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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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电池电压不足,显示低电符号“ ”
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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: 1280g(含电池)
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测试线:890g(含简易测试线)
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辅助接地棒:720g(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-FR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。
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