Intelligent Loop Resistance Tester
智能回路电阻测试仪是根据中华人民共和国最新电力执行标准DL/T845.4-2004，采用高频开关电源技术和数字电路技术相结合设计而成。智能回路电阻测试仪适用于开关控制设备回路电阻的测量。其测试电流采用国家标准推荐的直流100A和200A。可在电流100A、200A的情况下直接测得回路电阻，最后的测试结果用大屏幕液晶LCD显示，并有数据存储、输出打印、时间设置等功能。另有50A、150A档位供用户选择。该仪器测量准确、性能稳定，符合电力、供电部门现场高压开关维修和高压开关厂回路电阻测试的要求。
Product Overview
在测量高压开关导电回路接触电阻时，由于受触头之间油膜和氧化层的影响，测量值偏大若干倍，无法真实的反映接触电阻值。为此，电力部标准SD301—88《交流500kV电力设备交接和预防性试验规程》和新版《电力设备预防性试验规程》作出对断路器、隔离开关接触电阻的测量电流不小于直流100A的规定，以确保试验结果准确。
型智能回路电阻测试仪 目前，电力系统中普遍采用常规的QJ44型双臂直流电桥测量接触电阻，而这类电桥的测试电流仅mA级，难以发现回路导体截面积减少的缺陷。在测量高压开关导电回路接触电阻时，由于受触头之间油膜和氧化层的影响，测量值偏大若干倍，无法真实的反映接触电阻值。为此，电力部标准SD301—88《交流500kV电力设备交接和预防性试验规程》和新版《电力设备预防性试验规程》作出对断路器、隔离开关接触电阻的测量电流不小于直流100A的规定，以确保试验结果准确
Performance Features
High current: latest switching power tech for continuous high-current output, effectively breaks through contact oxidation film for accurate results.
High Stability: last digit of LCD remains stable within ±1 digit under severe interference, with stable and repeatable readings.
High Precision: dual high-speed 16-bit Σ-Δ AD sampling with latest DSP technology achieves 0.01μΩ resolution. The only domestic tester achieving 0.01μΩ with excellent stability, surpassing imported high-current micro-ohmmeters.
Intelligent: imported high-performance CPU with auto-ranging for guaranteed accuracy. Over-temperature protection auto-stops output for safe operation.
High Quality: all key components imported. Temperature compensation eliminates environmental effects. Military-grade connectors enhance vibration resistance.
Powerful: current selectable between 50A/100A, test time adjustable 5s~599s. Overcomes limitations of comparable instruments, far exceeding their performance.
User-Friendly: rotary mouse for convenient data entry. Set date/time, save measurements in real-time, and print results instantly.
Communication: USB or RS232 serial
(9) Convenient: compact and lightweight for easy portability.
