Transformer detection High voltage withstand test equipment Switch detection equipment electric energy measurement and testing equipment secondary circuit test equipment Lightning arrester/insulator testing equipment Ground/Insulation Resistance Test Equipment SF6Gas detection category Phase voltammeter Frequency conversion grounding grid grounding resistance tester Digital intelligent partial discharge tester Vacuum degree Micro water meter Insulating oil dielectric strength tester Insulating oil micro-water tester Wired vector Flatbed Vector Analyzer Taiqu District User Identifier Cable fault detector Generator rotor AC impedance tester Dielectric loss tester Nuclear phase analyzer Electric energy meter field calibrator Underground pipeline detector AJRZTransformer short circuit impedance tester Oil and water tester Transformer short circuit impedance tester DC resistance tester Generator AC impedance Battery testing equipment
AJ306 回路电阻测试仪
一、概述:
目前,电力系统中普遍采用常规的QJ44型双臂直流电桥测量变压器线圈的直流电阻、高压断路器的接触电阻,而这类电桥的测试电流仅为mA级,难以发现变压器线圈导电回路导体截面积减少的缺陷。在测量高压开关导电回路的接触电阻时,由于收到油膜和动静触点间氧化层的影响,测量的电阻值偏大若干倍,掩盖了真实的接触电阻值。因此,电力部标准SD301—88《交流500KV电气设备交接和预防性试验规程》和新版《电气设备预防性试验规程》对断路器、隔离开关接触电阻的测量电流作出不小于100A的规定,以确保测量的准确度。
回路电阻测试仪是采用数字电路技术和开关电源技术相结合设计而成。它适用于开关控制设备的接触电阻、回路电阻的测量。其测试电流采用国家标准推荐的直流100A。可在电流100A的情况下直接测得回路电阻和接触电阻,并用数字显示出来。该仪器测量准确、性能稳定,适合电力、供电部门现场高压开关维修和高压开关厂回路电阻测试得要求。
二、技术指标:
- 测量范围:1—1999.9uΩ
- 分辨率:0.1uΩ
- 测试电流: ≤100A
- 测量精度:0.5%
- 显示方式: 电流 :三位半LCD 电阻 :四位半LCD
- 工作方式:连续
- 工作电源:AC220V
- 体积:480×320×220
- 重量:13Kg
PreviousAJ703 继电保护测试仪
NextAJ306 回路电阻测试仪