中文介绍
SM852B相序表是一款专业用于三相电力系统相位检测及电源状态分析的高效工具。它能够快速判断电源相序、缺相状态及电压参数，适用于工业设备调试、电力系统维护及机电安装等场景。
该产品采用智能化检测技术，可自动识别R/S/T三相电压的相位顺序，并通过直观的LED指示灯与蜂鸣器同步反馈检测结果。其工作电压范围为60V～600V（三相交流电），最高耐压可达2000V/分钟，脉冲电压可达4000V。可测量的频率范围为20Hz～400Hz。当检测到逆相序或存在缺相情况时，设备会立即触发声光报警提示，便于操作人员快速定位问题。
SM852B的机身采用符合人体工学的紧凑型结构设计，外壳选用高强度工程材料，兼顾轻量化与抗冲击性能。三支测量探针经过特殊工艺处理，具有良好的绝缘性能与接触稳定性。配套的便携收纳盒便于工具与附件的整理携带，满足现场作业的移动需求。

英文介绍
The SM852B phase sequence indicator is a highly efficient tool for detecting phase sequences and power status in three-phase electrical systems. It can quickly determine the phase sequence, open phase status, and voltage parameters of power sources, making it suitable for industrial equipment debugging, power system maintenance, and electromechanical installation.
This product utilizes intelligent detection technology to automatically identify the phase sequence of R/S/T three-phase voltages and provides detection results through intuitive LED indicators and audible signals. The working voltage range is 60V to 600V (three-phase AC), with a maximum withstand voltage of 2000V per minute and a pulse voltage of 4000V. The measurable frequency range is 20Hz to 400Hz. When reverse phase sequence or open phase conditions are detected, the device immediately triggers audible and visual alarms to help operators quickly locate issues.
The SM852B features a compact ergonomic design with a high-strength engineering plastic housing that is both lightweight and impact-resistant. The three measurement probes are treated with special processes to ensure good insulation and stable contact. The included portable storage case facilitates the organization and transportation of the tool and its accessories, meeting the mobility needs of on-site operations.