Power Quality Online Monitor is a multifunctional test instrument designed and developed by our company, integrating power quality analysis, electrical parameter testing, and power vector analysis. This instrument supports 50Hz/60Hz power grid frequency system measurement. It can record and analyze all power quality parameters on site, such as harmonics, voltage, current, frequency, fluctuation, flicker, voltage swell and sag, power, and three-phase unbalance. It has advanced power quality measurement functions and also provides professional host computer analysis software for secondary analysis, providing users with accurate power fault diagnosis and analysis. Equipped with high-precision, high-linearity voltage transformers and clamp current transformers, the instrument ensures high measurement accuracy for various parameters, and the on-site wiring is simple.
It adopts an imported large-screen color LCD as the display, touch screen operation, Chinese operation interface with Chinese prompt information, and a multi-parameter display LCD interface. The human-machine dialogue interface is friendly, and the vector diagram display and wiring judgment provide a reliable basis for checking the correctness of the circuit. The instrument has a built-in large-capacity data memory that does not lose data when power is off, which can save a large amount of on-site test data, providing reliable on-site data for the analysis of the host computer software.
Functional Features
1. Multi-channel measurement: 4 voltage channels and 4 current channels are measured simultaneously.
2. Electrical parameter measurement: can simultaneously measure voltage amplitude, current amplitude, phase, frequency, active power, reactive power, power factor and other parameters;
3. Can measure the 2nd to 64th harmonic content of voltage and current;
4. Can measure total harmonic distortion rate;
5. Can measure short-term flicker (PST), long-term flicker (PLT), and voltage fluctuation;
6. Can measure positive sequence voltage, negative sequence voltage, zero sequence voltage, and voltage unbalance;
7. Can measure positive sequence current, negative sequence current, zero sequence current, and current unbalance;
8. Transient parameter measurement function, with voltage swell and sag event recording function, and automatically starts waveform recording function to record the occurrence time and actual waveform of the event;
9. Has oscilloscope function, can display voltage and current magnitude and distortion in real-time waveform, and can zoom in and out on the voltage and current waveform on the instrument;
10. Hexagonal diagram display function, can perform vector analysis of metering circuits and protection device circuits, and check for incorrect wiring;
11. Optional large clamp meter can measure the transformation ratio and phase angle error of low-voltage current transformers;
12. Harmonic content can be displayed in bar chart form, with good visual effects;
13. Built-in large-capacity data memory (storage interval 1 second to 1000 minutes optional), can continuously store data for more than 18 months at 1-minute intervals;
14. 10-inch large-screen color LCD display 1280×800;
15. Capacitive touch screen operation, simple and easy to learn;
16. Supports mouse operation, adapting to operators with different habits;
17. When measuring harmonics, it can automatically judge whether the harmonic content of each order exceeds the standard according to national standards and give prompts, clear at a glance;
18. Harmonic content rate national standard query function, can query the allowable values of national standards;
