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

1. Three voltage channels and six current vectors are displayed on the same screen. For testing differential protection devices, only one wiring is needed 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. Using clamp type current transformers for wiring, there is no need to disconnect the current circuit, which is safe and convenient.
3. Vector analysis of complex protective devices can be performed to determine if the wiring is correct, and a correct wiring diagram can be provided 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. Can perform error wiring inspection for 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, Chinese character graphical menu and operation prompts achieve friendly human-machine dialogue, touch silicone buttons make operation more comfortable and feel better, wide temperature LCD with brightness adjustment, can adapt to winter and summer seasons.
8. Powered by a large capacity lithium battery, it can work continuously for up to 8 hours.
 

Technical indicators
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