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              It meets the whole requirements of GB/T1459¡«93 to test the virtual value,   and positive ,reverse and zero sequence component of current and   voltage 
                Measuring area: content of voltage harmonic, distortion factor of   phase-angle and current voltage 
                Virtual value of current harmonics,   distortion factor of phase-angle and total voltage harmonics 
                Range of   measuring harmonics: fundamental wave -51times harmonics  
                Way of input   signals: voltage, current, phase 
                Print: printed three-phase waveforms,   statistic of the testing results, automatic printed three-phase results. 
                The key technical indexes: 
                  1£®Way and range of input   signal 
                  A£®Three-phase voltage and three-phase current 
                  B. voltage test   range: 10-240V£¨or 20-400V£© 
                  C. current test range: 0.05-6A (or0.1-12A) 
                  D.   tracking range of fundamental harmonics frequency  
                2. Input impendence: voltage side¡Ý200k¦¸, current side¡Ü20m¦¸ 
                  3. Measuring   accuracy: measuring error of fundamental: ¡Ü0.5% 
                  4. Measuring times of   harmonics: 5-51 
                  5. Statistical times£º5¡«96 times are choiceable 
                  6. Timing   space of orientation in time£º0¡«999 minutes are choiceable 
                  7. setting range of   continuous limited number£º0¡«999 
                  8. time of equipments¡¯ power supply   source£º220V¡À15%£»50Hz¡À5%£»THDu¡À¡Ü8.0%; 20VA 
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