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              Main functions: 
                (1) measuring the single-phase, biphase and three -lines,   three-phase and four¨Clines electric energy and power 
                (2) checking three-phase   or single-phase turnplate and electric energy meter of electron impulse by   photoelectricity or human hands 
                (3) indicating the pharos graph, and judging   the 48 normal ways of the connecting of the three-phase and three- lines   automatically 
                (4) measuring the checked voltage, electric current, phase   angle, power factor, frequency and other electrical parameters 
                (5) can print   the measuring results through the output printer 
                (6) can measuring the   electric current of the return circuit by inside or outside forcipiform electric   transformer 
                (7) can also check the three-phase indicating instrument and   electric quantity transmitter  
                 
                Main features 
                  (1) using the non -power   resource transformer with high stability every year 
                  (2) big liquid crystal   screen , Chinese characters guide menu ,interactive mode of dialogue between   human and machine 
                  (3) indicating the pharos graph directly 
                  (4) small size,   low weight, changeable vision ,because of the international standard of the   designed chassis 
                  (5) indicating the voltage, electric current and phase angle   in each screen and active ,and reactive power at the same time 
                  (6) having the   ternary standardized electric energy, power, electric current, power factor,   frequency instrument, and highest accurate level(0.1) in China, phase   angle=0.1 
                   
                  Output features:  
                  Voltage£º400V 200V 100V  
                  Electric current£º20A 5A 1A It can be reset by yourself.   | 
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