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≥200kΩ, current side≤20mΩ
3. Measuring accuracy: measuring error of fundamental: ≤0.5%
4. Measuring times of harmonics: 5-51
5. Statistical times:5~96 times are choiceable
6. Timing space of orientation in time:0~999 minutes are choiceable
7. setting range of continuous limited number:0~999
8. time of equipments' power supply source:220V±15%;50Hz±5%;THDu±≤8.0%; 20VA