First, the product characteristics 
 (1) 7-inch large-screen color LCD display clear and intuitive. 
 Two main and meter calibration: measuring active, reactive, or both of the power meter error and power accumulation function. 
 (3) terminal emulation features: access to voltage, current signal can be simulated on-site wiring, draw the appropriate wiring results. 
 Electrical parameters measurement: the voltage / current / active / reactive power / phase / frequency / power factor, etc. and display the Hex vector graphics. 
 5 electricity cumulative function: can verify the energy pulse output meter, or as a test energy indicators. 
 Automatic terminal recognition function: measuring a variety of wiring, the report check line results, calculate the correction coefficient for the electricity to make up. 
 7 real-time measurement of three-phase voltage and current waveforms, 2-21 harmonic and 2-42 times of harmonic power. 
 Chinese input support Pinyin, Wubi, five strokes of Chinese character input method, input keyboard, computer keyboard arrangement arranged, and can support direct computer keyboard operation. 
 5A Clamp calibration function, measurable error of the clamp to keep abreast of the clamp closed. 
 10 with large current clamp to measure the low-voltage CT ratio and low pressure metering device error. 
 11 optional mini-printer, on-site print the chart data. 
 12. A variety of power operating mode, the terminal power supply, electricity supply and lithium battery-powered, the user according to the situation arbitrarily selected. 
 13 to 5000 users can download data with USB interface, with 2GU plate, forming a very large space, convenience copies of data. 

 Second, the product parameters 
 A measuring range and error: 
 1) Voltage :30-480V resolution of 0.001A ≤ ± 0.1% (optional ≤ ± 0.05%) 
 2) Current: Terminal Access 0.1 to 5A resolution 0.0001A ≤ ± 0.1% (optional ≤ ± 0.05%) 
 Clamp access to 5A (overload 120%) ≤ ± 0.2% 
 3) Phase: 0 ° ~ 360 resolution of 0.01 ° ≤ ± 0.5 ° 
 4) Frequency: 45Hz ~ 55Hz resolution of 0.01 Hz, ≤ ± 0.01Hz 
 5) harmonic measurement :2-21 harmonic power measurement :2-42 
 Clamp access to 5A ≤ 6) active energy, power: Terminal Access ≤ ± 0.1% ± 0.2% 
 Clamp access to 5A ≤ 7) reactive energy, power: Terminal Access ≤ ± 0.2% ± 0.5% 
 Pulse output characteristics: low-frequency pulses: 3600 pulse / kwh; high pulse quite: 3.6X107 / pulse / kwh 
 (3) Data storage: 5000 data set 
 (4) Power supply: the PT by electric AC 80-480V power: ≤ 7.5VA 
 Socket power supply AC220V mains 
 Battery, work time> 4 hours 
 (5) use and storage environment: 
 Operating temperature: -18 ℃ -45 ℃; Storage Temperature: -45 ° C - 65 ° C 
 Humidity: ≤ ± 85% RH (use) ,10-90% PH (storage) 
 (6) Dimensions: 275 × 200 × 72mm 
 Weight: 1.5kg