Function Features:
1. Adopt 7-inch 800 X 480 resolution true color TFT high-brightness LCD screen, display all measurement parameters, vector map, harmonic distortion, calibration parameter settings on one screen, and verify the meter error without switching interface;
2. With touch screen, buttons can be operated, the operation is more convenient and fast;
3. Built-in e-book, human-machine interface with perfect function of the help group, easy and smooth operation;
4. It can directly measure voltage, current, power, phase, frequency and verify error; and voltage and current (between 1A and 10A) can automatically shift gears;
5. Three-phase four-wire, three-phase three-wire active energy meter, various reactive energy meter (Q90, Q60) real load calibration;
6. With the fundamental measurement mode, the calibration of the fundamental wave table can be realized;
7. It has two energy pulse input ports, which can check two tables (main and auxiliary table) at the same time, and can also check the active meter and the reactive meter at the same time;
8. The output energy constant can be set to facilitate calibration of the instrument;
9. With error correction function, according to the accuracy level of the meter being calibrated, the error is automatically adjusted;
10. Measuring CT ratio, ratio, angle difference, and polarity;
11. It can measure the ambient temperature and humidity. It can record the ambient temperature and humidity during the measurement;
12. It can analyze 0~51 harmonics and measure the harmonic content, amplitude and phase of each harmonic. And displayed by histogram, and the histogram has a zoom function, which is convenient for observation and analysis;
13. Waveform display with amplification function;
14. Users can choose 5A, 10A, 100A, 200A, 500A, 1000A, 2000A clamps as needed to achieve real load measurement of the integrated error of low-voltage energy metering devices. Can be equipped with 3 kinds of clamps at the same time;
15. Automatically identify the current access mode, the user does not need to set;
16. With electric energy accumulation function. It can carry out on-site word-testing of electric energy meter, calibration error and calibration constant;
17. Rich vector diagram display to meet various user habits;
18. It can realize on-site rapid discrimination of three-phase three-wire and three-phase four-wire error wiring. And give the corrective steps. It can also calculate the correction coefficient and the recovery power under the wrong wiring;
19. Support bar code input, so that on-site can be free of input verification parameters and fast calibration error; (optional according to user needs)
20. Optional micro printer to print measurement data on site.
21. Support digital input, letter input, symbol input, Chinese character input;
22. It has the storage and upload functions of various measurement data. Support RS232, USB communication. Import measurement data can be exported via a USB flash drive. It can also accept the verification plan transmitted by the PC, and quickly check the calibration parameters of the table under various conditions (office number, account number, user name). It can store measurement data of 1000 tables;
23. With RS-485 interface, the power can be read and read on the spot, and the energy meter communication check is performed;
24. Scalable measurement: PT secondary pressure drop, PT secondary load, CT secondary load; (optional according to user needs)
25. There is a GPS interface for timing and timing of the multi-function meter; (optional according to user needs)
26. Wide power supply working range: 45 ~ 450V, with internal and external connection, flexible, safe and reliable. It can also be powered by a lithium battery and can work for about 8 hours.

Technical Index:
1. Voltage, current, active power, active energy (built-in current transformer) accuracy level: 0.05.
2. Reactive power, reactive energy accuracy level: 0.1 level.
3. Voltage input: 30V ~ 560V, 60V, 120V, 240V, 480V four gears, automatic shifting.
4. Current input: Built-in current transformer: 0.01~10A, automatic shifting.
Clamp meter: optional 5A, 10A, 20A, 100A, 200A, 500A, 1000A, 2000A.
5. Phase measurement range: 0.000 ° ~ 360 ° (or 0.000 ° ~ ± 180 °), resolution: 0.001 °.
Accuracy: ±0.05° (current input >10%Ib)
6. Frequency measurement: Resolution: 0.001H, accuracy: ±0.01Hz.
7. Input energy pulse: TTL level, the highest frequency is ≤ 2MHz.
8. Output energy pulse: When the constant is constant, the rated range is 60KHz. The manual constant can be set between 1 and 250,000.
9. Temperature coefficient: 5 ppm.
10. Low voltage input impedance: >750KΩ;
11. Current input impedance: <0.05Ω;
12. Input signal frequency: 45~65Hz;
13.PT secondary pressure drop accuracy (90%~110%Un): angular difference 0.2 ́; ratio difference 0.02%;
14. PT, CT secondary load measurement accuracy: 1.0
Measuring range: admittance: 1.0~99.99 (ms);
Impedance: 0.1~8 (Ω);
15. Clock measurement accuracy: ± 0.5ppm; 0.05 seconds / day;
16. Power supply: frequency 50Hz, range 45~450V;
17. Power consumption: ≤ 13VA;
18. Working environment temperature: -10 ° C ~ 40 ° C Humidity: 30 ~ 80% RH;
19. Instrument weight: 2Kg.