BJ8830接地电阻测试仪
BJ8830接地电阻测试仪产品介绍
BJ8830接地电阻测试仪是一款采用先进DC/AC变换技术的新型测量设备，适用于电力、通信、铁路等行业对各类装置接地电阻及低电阻导体电阻值的精确测量。该设备摒弃传统手摇发电方式，通过中大规模集成电路实现三端钮和四端钮测量方式的集成化设计。其工作原理是通过机内变换器将直流转为低频交流恒流，经辅助接地极形成回路后测量被测物上的交流压降，最终通过LCD显示屏直观呈现测量结果。设备提供0～2Ω、0～20Ω、0～200Ω三个量程范围，可满足不同场景的测量需求。13
产品特点与结构设计
该测试仪采用高强度铝合金外壳，具备优良的抗干扰能力，这得益于锁相环同步跟踪检波技术和开关电容滤波器的应用。设备允许辅助接地电阻在0～2kΩ（Rc）和0～40kΩ（Rp）之间变化而不影响测量精度，且无需人工调节平衡。除接地电阻测量外，还可进行土壤电阻率及交流地电压的检测。设备配备312位LCD显示屏，当测试回路不通时会显示"1"提示溢出，符合常规操作习惯。整机体积为220×200×105mm，重量不超过1.4kg，采用6节5#镉镍充电电池供电，支持外接220V交流电源充电，最大功耗低于2W。138
BJ8830 Ground Resistance Tester Product Overview
The BJ8830 ground resistance tester is an innovative measuring device employing advanced DC/AC conversion technology, designed for precise measurement of grounding resistance in power systems, telecommunications, and railway applications. This integrated instrument combines three-terminal and four-terminal measurement methods through large-scale integrated circuits, eliminating the need for traditional manual generator operation. Its operating principle involves converting DC to low-frequency AC constant current through an internal transformer, then measuring the AC voltage drop across the test object via auxiliary grounding electrodes, with results displayed on an LCD screen. The device offers three measurement ranges: 0-2Ω, 0-20Ω, and 0-200Ω to accommodate various testing scenarios.13
Design Features and Technical Specifications
Featuring a durable aluminum alloy casing, this tester demonstrates exceptional anti-interference capability due to its phase-locked loop synchronous tracking detection and switched capacitor filter technology. It maintains measurement accuracy even with auxiliary grounding resistance variations between 0-2kΩ (Rc) and 0-40kΩ (Rp), requiring no manual balance adjustment. Beyond grounding resistance measurement, it can evaluate soil resistivity and AC ground voltage. The 312-segment LCD display shows "1" to indicate open-circuit conditions, following conventional measurement conventions. With compact dimensions of 220×200×105mm and weighing under 1.4kg, it operates on six rechargeable 5# Ni-Cd batteries (also supporting 220V AC charging) while maintaining power consumption below 2W. The instrument s portable design and multifunctional capabilities make it suitable for field applications across multiple industries.138
BJ8830接地电阻测试仪
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