Phase meter function: verify the correctness of main variable differential protection and busbar differential
Electric parameter tester function: test the necessary parameters of power system
Function of metering wire detector: test the three-phase three-wire power metering wire inspection
Harmonic content test function: field test voltage and current harmonic content
Oscilloscope function: display bar chart, as a simple oscilloscope, used to observe the test signal waveform

1, three voltage, six current vector on the same screen display; For the test of differential protection device, only one connection can complete the drawing of hexagonal diagram, which improves the work efficiency; In the case of small space and difficult wiring, the double-clamp method can be used for multiple measurements and finally draw a complete hexagonal diagram.
2, the use of clamp current transformer connection, no need to disconnect the current circuit, safe and convenient.
3, can carry out vector analysis of complex protection devices, judge whether the wiring is correct, and give the correct wiring diagram for comparison.
4, conventional electrical parameters can be tested, while displaying three-phase voltage, three-phase current, three-phase active power, three-phase apparent power, three-phase phase Angle; The voltage amplitude, current amplitude and power value of the primary side of the transformer can be directly read and converted.
5, can carry out three-phase three-wire high-voltage metering device error wiring check, can analyze and judge the three-phase three-wire 48 kinds of wiring, directly give the analysis results; Investigate and punish the means of stealing electricity by maliciously changing the metering connection to effectively avoid the loss of electricity charges.
6, can carry out harmonic analysis of the measured signal on the spot, can analyze the content of 2-21 harmonics, and automatically calculate the total harmonic distortion degree.
7, large screen, high brightness color LCD display, Chinese graphic menu and operation tips to achieve friendly human-machine dialogue, touch the silicone button to operate comfortable, feel good, wide temperature LCD with brightness adjustment, can adapt to winter and summer seasons.

Technical index
1. Enter features
Number of voltage channels: 3
Voltage measurement range: 20~450V
Voltage display resolution: 0.01V
Current channels: 6 channels
Current measurement range: 0~10A
Current display resolution: 0.0001A
Phase measurement range: -180° ~ +180°
Harmonic analysis times: 2 ~ 21 times
2. Accuracy
Voltage: ±0.2%
Current, power: ±0.2%
Phase Angle: ±1°
Measurement error of harmonic voltage content: ≤ 0.3%
Measurement error of harmonic current content: ≤ 0.5%