环境温度:0~40℃ |
加工定制:否 |
测量范围:0-600(MΩ) |
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类型:数字式电阻测量仪表 |
电 源:< AC 12V |
重量:15(kg) |
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尺 寸:315*250*165mm |
型号:RK2678X |
重复误差:5% |
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精度:5% |
品牌:REK/美瑞克 |
相对湿度:小于85% |
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测试电压:< AC 12V(V) |
校准周期:3年 |
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RK2678X报警接时电阻测量仪 |
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测试时间、测试电流和接地电阻值同时显示 |
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●报警电阻值可连续预置,更加方便用户测试,全国首创 |
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●采用四端测量法,消除接触电阻对测试的影响,测试精度高 |
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●新增开路报警选择功能,用户可自由选择是否需要开路报警 |
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●采用除法器电路显示电阻,有效消除电网电压波动的影响,对电源依赖程度低 |
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技术规格 |
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1、测量范围 0~200mΩ±(5%+2个字) (25A) |
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200~600mΩ±(5%+2个字)(10A) |
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2、测试时间 0~99s(连续可调) |
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3、 测试电压 < AC 12V/6V(RK2678Y) |
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4、 测试电流 AC 5~30A±5% |
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5、 过流报警 > AC 30A |
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6、 报警电阻值 0~200mΩ±(5%+2个字) (AC 25A)连续可调 |
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200~600mΩ±(5%+2个字) (AC 10A)连续可调 |
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7、 使用条件: |
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(1)温度 0~40℃ |
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(2)相对湿度 <80%RH |
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(3)供电电源 AC220V±10% 50Hz |
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8、 外形尺寸 315mm×250mm×165mm |
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9、 重量 15kg |
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工作原理和方框图 |
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接地电阻测试仪是由测试电源、测试电路、指示器和报警电路组成。测试电源产生测量电流,测试电路将电流信号和流经被测电阻上电流所产生的电压信号进行处理,完成交直流转换,进行除法运算,指示器指示电流值和电阻值,若被测电阻大于报警值,仪器发出继续的声光报警,若测试电流大于30A,则发出连续的声光报警,并切断测试电流,以保证被测电器的安全。 |
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