Ac tri - phase reactive power meter note1 交流三相無功功率表注1
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 單相交流有功無功功率表;雙屏數字顯示;外形尺寸16080開關電源供電電壓輸入0 100v電流輸入0 5a有功顯示2500w無功顯示2500var 。
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 三相交流有功無功功率表;雙屏數字顯示;外形尺寸16080三相四線制;開關電源供電電壓輸入0 100v電流輸入0 5a有功顯示7500w無功顯示7500var 。
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 單相交流有功無功功率表雙屏數字顯示外形尺寸80160 rs - 485標準串行通訊4 20 ma變送輸出開關電源供電電壓輸入0 220v ;輸入電流0 5a ;有功顯示1100w ,無功顯示1100var 。
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 本文研制的保護和測控單元,可替代低壓配電系統中所使用的常規儀表,將原來回路需要的電流表、電壓表、有功功率表、無功功率表和功率因數表、頻率表簡化為一塊表,并增加了位置開關量檢測,控制母線投切和電度監測功能,從而極大的簡化了低壓配電二次儀表設計、安裝調試,提高了運行、維護和管理水平。
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 單相交流無功功率表光柱顯示單屏數字顯示外形尺寸80160 rs - 485標準串行通訊變送輸出4 20 ma ,上下限報警功能開關電源供電;輸入電壓380v ;輸入電流05a ;顯示量程0 1900var 。