Electric Power Instrument Series Products 
Type Definition and Size of Intelligent Digital Display Instrument

智能数显仪表Intelligent digital display instrument
智能数显仪表适用于电力电网、自动化控制系统中对电压、电流、有功功率、无功功率、视在功率、功率因数和频率等电参量的测量,油数码管(LED)或液晶(LED)直接显示。具有显示直观、精度高、性能稳定、隔离性强、抗振动等优点。可选配多种扩展功能，包括RS-485通讯、开关量输入、开关量输岀和模拟量变送输出等,丰富的外型尺寸可方便地替代指针式仪表。
Intelligent digital display instrument is suitable for the measurement of voltage, current, active power, reactive power, apparent power, power factor and frequency in power grid and automation control system, and the direct display of oil digital tube (LED) or liquid crystal (LED). It has the advantages of visual display, high precision, stable performance, strong isolation and anti-vibration. It can be equipped with a variety of extension functions, including RS-485 communication, switch input, switch output report and analog output, etc. 

产品标准Product Standards
◆  GB/T 22264.1-2008安装式数字显示电测量仪表第1部分:定义和通用要求;
◆  GB/T 22264.2-2008安装式数字显示电测量仪表第2部分:电流表和电压表的特殊要求;
◆  GB/T 22264.3-2008安装式数字显示电测量仪表第3部分:功率表和无功功率表的特殊要求;
◆  GB/T 22264.4-2008安装式数字显示电测量仪表第4部分:频率表的特殊要求;
◆  GB/T 22264.5-2008安装式数字显示电测量仪表第5部分:相位表和功率因数表的特殊要求;
◆  GB/T 22264.8-2008安装式数字显示电测量仪表第8部分:推荐的试验方法。
◆  GB/T 22264.1-2008 Installed Digital Display Electrical Measuring Instruments Part 1: Definition and General Requirements;
◆  GB/T 22264.2-2008 Installed Digital Display Electrical Measuring Instruments Part 2: Special Requirements for Amperometers and Voltmeters;
◆  GB/T 22264.3-2008 Installed Digital Display Electrical Measuring Instruments Part 3: Special Requirements for Power Meters and Reactive Power Meters; 
◆  GB/T 22264.4-2008 Installed Digital Display Electrical Measuring Instruments Part 4: Special Requirements for Frequency Meters; 
◆  GB/T 22264.5-2008 Installed Digital Display Electrical Measuring Instruments Part 5: Special Requirements for Phase Meters and Power Factor Meters; 
◆  GB/T 22264.8-2008 Installed Digital Display Electrical Measuring Instruments Part 8: Recommended test methods.