This measuring instrument adopts DSP AC sampling and can simultaneously measure 3 channels of voltage and 6 channels of current analog signals. The instrument pioneered 9-channel vector display on the same screen and has a friendly human-machine dialogue interface; The handheld structure independently developed for mold making, made of high-strength engineering plastic, is sturdy and lightweight, easy to use, and convenient for on-site use, making it a good assistant for power workers.

1. Three voltage and six current vector displays on the same screen, pioneering in China; The testing of differential protection devices only requires one wiring to complete the drawing of the hexagonal diagram, greatly improving work efficiency; In situations where space is small and wiring is difficult, the double clamp method can be used for multiple measurements to ultimately draw a complete hexagonal diagram.
2. Adopting clamp type current transformer wiring, there is no need to disconnect the current circuit, which is safe and convenient.
3. Vector analysis of complex protective devices can be conducted to determine whether the wiring is correct and provide the correct wiring diagram for comparison.
4. It can perform routine electrical parameter testing and display three-phase voltage, three-phase current, three-phase active power, three-phase apparent power, and three-phase phase angle simultaneously; And it can directly read and convert the voltage amplitude, current amplitude, and power values to the primary side of the transformer.
5. It can perform error wiring inspection on three-phase three wire high-voltage metering devices, analyze and judge 48 types of three-phase three wire wiring, and directly provide analysis results; Investigating and punishing malicious methods of electricity theft that alter metering wiring, effectively avoiding electricity bill losses.
6. It can perform harmonic analysis of the measured signal on site, analyze the content of each order of 2-21 harmonics, and automatically calculate the total harmonic distortion.
7. Large screen, high brightness color LCD display, fully Chinese character graphical menu and operation prompts for friendly human-machine dialogue, touch silicone buttons for more comfortable operation and better feel, wide temperature LCD with brightness adjustment, suitable for winter and summer seasons.
8. Powered by a large capacity lithium battery, it can work continuously for up to 8 hours.

1. Input characteristics
Number of voltage channels: 3 channels
Voltage measurement range: 20~450V
Voltage display resolution: 0.01V
Number of current channels: 6 channels
Current measurement range: 0~10A
Current display resolution: 0.0001A
Phase measurement range: -180 ° to+180 °
Harmonic analysis frequency: 2-21 times
 
2. Accuracy
Voltage: ± 0.2%
Current and power: ± 0.2%
Phase angle: ± 1 °
Measurement error of harmonic voltage content: ≤ 0.3%
Measurement error of harmonic current content: ≤ 0.5%
3. Working temperature: -15 ℃~+40 ℃
4. Charging power supply: AC 160V~260V
5. Insulation: ⑴ The insulation resistance between the voltage and current input terminals and the casing is ≥ 100M Ω.
⑵ The input end of the working power supply is subjected to a power frequency of 2KV (effective value) between the casing, and the experiment lasts for 1 minute.
6. Volume: 250mm × 160mm × 60mm
7. Weight: 1.8Kg