When the power quality of the power grid is interfered with or polluted, and cannot reach the relevant national standards, it is necessary to improve the power quality of the power grid in a targeted way. To understand the actual situation of power quality in the power grid, it is necessary to have the corresponding equipment to test and analyze it. In view of the actual situation in China, our company has developed a professional power quality analysis instrument suitable for the national conditions in a timely manner.

Functional characteristics
1. The instrument is a high-precision testing instrument specially used to detect power quality problems such as waveform distortion, harmonic content and three-phase imbalance in the power grid; At the same time, it also has the function of electrical parameter testing and vector analysis.
2. Can accurately measure voltage, current, active power, reactive power, phase Angle, power factor, frequency and other electrical parameters.
3. The vector diagram of measured voltage and current can be displayed, and the user can get the correct connection of the metering equipment by analyzing the vector diagram.
4. The current is measured by the clamp transformer. Because the operator does not need to disconnect the current circuit when using the clamp current transformer measurement, it can be convenient and safe to measure. According to the user's different measuring range can be selected different range of clamp meter.
5. It can measure and analyze the AC power quality supplied by the public grid to the client end, and its measurement and analysis: frequency deviation, voltage deviation, three-phase voltage allowable unbalance degree and grid harmonics.
6. Can display single-phase voltage and current waveform and can display three-phase voltage and current waveform at the same time.
7. All test interfaces have screen lock function to facilitate users to read and analyze data.
8. Short-term flicker Pst and long-term flicker Plt can be measured.
9. Load fluctuation monitoring: Measure and analyze the fluctuations caused by various electrical equipment in different operating states to the power quality of the public grid. Periodically record and store the trend of voltage, current, active power, reactive power, apparent power, frequency, phase and other power parameters.
10. Record the active and reactive electric energy consumed at the test point.
11. Dynamic monitoring of power equipment adjustment and operation process to help users solve problems in the process of power equipment adjustment and operation.
12. Be able to test and analyze dynamic parameters of reactive power compensation and filter devices in power systems and make quantitative evaluation of their functions and technical indicators
13. You can set different storage intervals to continuously store data according to the set intervals;
14. Built-in large-capacity data storage, storage interval from 3 seconds to 10 minutes adjustable; It can be continuously stored for more than 18 months at a time interval of 1 minute, which can meet the needs of long-term monitoring test sites.
15. The instrument has a USB interface, which can easily copy the data directly to the background management computer.
16. In conjunction with data management software, real-time sampling data can be directly uploaded to the background management computer for more comprehensive and faster processing in the background.
17. Optional WIFI(Bluetooth) module, remote control of the instrument with tablet computer or smart phone.
18. With perpetual calendar, clock function, real-time display date and time. The test data and results can be saved at the same time in the field test, and uploaded to the computer through the serial port, and the data is microcomputerized management through the background management software (optional accessories), with the report function.

Technical index
1. Enter features
Voltage measurement range: 20 ~ 800V, automatic cutting.
Current measuring range
Clamp transformer (three kinds) :
5A/25A (standard)
100A/500A (optional)
400A/2000A (optional)
1000A/5000A (optional) Flexible coil
Phase Angle measurement range: 0~359.99°.
Frequency measurement range: 45~65Hz.
Number of voltage channels: three (UA, UB, UC).
Number of current channels: three (IA, IB, IC).
Maximum harmonic analysis times: 63 times.
1-minute interval Maximum continuous storage period: 18 months.
Step 2: Accuracy
Electrical parameter measurement part:
Voltage: ± 0.1%
Frequency: ±0.01Hz
Current, power: ±0.5%
Phase: ±0.2°
Power Quality part:
Allowable error of fundamental voltage ≤ 0.5% F.S.
Allowable error of fundamental current: ≤ 1% F.S.
Measurement error of phase difference between fundamental voltage and current: ≤0.2°
Measurement error of harmonic voltage content: ≤ 0.1%
Measurement error of harmonic current content: ≤0.2%
Three-phase voltage unbalance error: ≤0.2%
Voltage deviation error: ≤0.2%
Voltage variation error: ≤0.2%
3. Working temperature: -10℃~ +40℃
4. Charging power supply: AC220V, frequency 45Hz-55Hz
5. Host power consumption: ≤3VA
6. Maximum working time of the battery: ≤10 hours
7. Insulation:
1) The insulation resistance of the voltage and current input end to the housing is ≥100MΩ.
2) The working power supply input side is subjected to 1.5KV (effective value) between the shell, which lasts 1 minute experiment.
8. Volume: 258mm×158mm×58mm
9. Weight: 1.5Kg