| 1. | Intelligent single phase ac active power reactive power instrument
智能单相交流有功无功功率表 |
| 2. | Ac tri - phase reactive power meter note1
交流三相无功功率表注1 |
| 3. | Wattmeters and varmeters
功率表和无功功率表 |
| 4. | Three phase varmeter
三相无功功率表 |
| 5. | Direct acting indicating analogue electrical measuring instruments and their accessories - specification for special requirements for wattmeters and varmeters
直接指示模拟电工测量仪表及其辅助设备.第3部分:瓦特表和无功功率表的特殊要求规范 |
| 6. | Single phase ac active reactive power meter double screen digital display outline dimension 16080 mm switch power supply input voltage 0100 v input current 05 a active power display 2500 w , reactive power display 2500 var
单相交流有功无功功率表;双屏数字显示;外形尺寸16080开关电源供电电压输入0 100v电流输入0 5a有功显示2500w无功显示2500var 。 |
| 7. | Tri - phase ac active , reactive power meter ; double screen digital display ; outline dimension 16080 mm ; tri - phase four - wire system ; switch power supply ; voltage input 0100v ; current input 05a ; active display 7500w ; reactive display 7500var
三相交流有功无功功率表;双屏数字显示;外形尺寸16080三相四线制;开关电源供电电压输入0 100v电流输入0 5a有功显示7500w无功显示7500var 。 |
| 8. | Single phase ac active reactive power meter double screen digital display outline dimension 80160 mm rs - 485 standard serial communication ma transmission output switch power supply input voltage 0220 v , input current 05 a active power display 1100 w , reactive power display 1100 var
单相交流有功无功功率表双屏数字显示外形尺寸80160 rs - 485标准串行通讯4 20 ma变送输出开关电源供电电压输入0 220v ;输入电流0 5a ;有功显示1100w ,无功显示1100var 。 |
| 9. | A new full - wave measurement circuit structure is put forward that would increase distribution automation system reliability and veracity . the distributed protection and monitoring unit in this paper can instead of general instruments of low voltage distribution system . it not only combines ampere meter , voltage meter , active power meter , reactive power meter and power meter , frequency meter into a meter , but also increases monitoring position switch , control bus switching alternately and monitoring energy
本文研制的保护和测控单元，可替代低压配电系统中所使用的常规仪表，将原来回路需要的电流表、电压表、有功功率表、无功功率表和功率因数表、频率表简化为一块表，并增加了位置开关量检测，控制母线投切和电度监测功能，从而极大的简化了低压配电二次仪表设计、安装调试，提高了运行、维护和管理水平。 |
| 10. | Single phase ac reactive power meter : light column display single screen digital display , outline dimension 80160 mm , rs - 485 standard serial communication ; transmission output ma ; high low limit alarm function switch power supply input voltage 380 v input current 05 a display range 01900 var
单相交流无功功率表光柱显示单屏数字显示外形尺寸80160 rs - 485标准串行通讯变送输出4 20 ma ,上下限报警功能开关电源供电;输入电压380v ;输入电流05a ;显示量程0 1900var 。 |
