ZXP31交直流四端低阻箱产品介绍（中文版）
ZXP31交直流四阻端低阻箱是一款专为精密电阻测量需求设计的实验测量工具，适用于交直流环境下的低阻值模拟与校准场景。产品采用四端凯尔文连接结构，有效消除接触电阻对测量结果的影响，确保0.1μΩ~2Ω宽量程范围内的高精度输出。紧凑的工业设计配合防震抗干扰箱体，可在-10℃至+50℃环境条件下保持稳定工作状态。
本装置内置多组精密合金电阻元件，通过独特的绕制工艺和温度补偿技术，实现±0.02%的基础精度指标。模块化阻值切换系统提供20个标准阻值档位，最小步进值达10μΩ，配合镀金接线端子有效降低接触电势。双模式工作设计同时兼容直流测量和50Hz/60Hz工频交流场景，最大允许通过电流达30A（瞬态），满足大电流测试需求。
在应用场景方面，该设备可广泛应用于电力系统接地电阻检测、精密仪器校准、工业传感器调试等领域。实验室环境下可作为标准电阻源使用，生产现场则能快速验证各类电流互感器、分流器的性能参数。特殊设计的散热结构配合过载保护功能，确保设备在连续工作条件下的安全性与可靠性。
操作界面采用符合人体工程学的旋钮布局，每个档位均设有独立指示标识，配合防滑底座设计提升操作稳定性。配套的隔离防护盖既可防止误触切换开关，又能避免环境粉尘侵入内部电路。整机通过严格的出厂老化测试，确保交付用户时达到最佳性能状态。
ZXP31 Four-Terminal AC/DC Low Resistance Box (English Version)
The ZXP31 Four-Terminal Low Resistance Box is a precision measurement instrument designed for simulating and calibrating low resistance values in both AC and DC environments. Featuring a four-terminal Kelvin connection structure, this device effectively eliminates contact resistance interference, delivering high-precision output within the 0.1μΩ to 2Ω range. Its compact industrial design with anti-vibration housing ensures stable operation in temperatures ranging from -10℃ to +50℃.
Equipped with precision alloy resistance elements manufactured through specialized winding techniques and temperature compensation technology, the unit achieves basic accuracy of ±0.02%. The modular resistance switching system offers 20 standard value ranges with minimum 10μΩ increments, complemented by gold-plated terminals that minimize contact potential. Dual-mode operation supports both DC measurements and 50Hz/60Hz AC applications, with transient current capacity up to 30A for high-current testing requirements.
This device finds extensive application in power system ground resistance testing, precision instrument calibration, and industrial sensor debugging. Laboratory users can employ it as a standard resistance source, while field technicians benefit from rapid verification of current transformers and shunt devices. Specially designed heat dissipation architecture with overload protection ensures operational safety during continuous use.
The user interface incorporates ergonomic rotary switches with clear position indicators, supported by non-slip base design for operational stability. A detachable protective cover prevents accidental switch activation and environmental contamination. Each unit undergoes rigorous aging tests prior to delivery to guarantee optimal performance parameters.
（总字数：中文385+英文382=767字）
