Power Quality Analyzer is a comprehensive test instrument carefully developed by our company and specially designed for field test of three phases, multi-functional and intelligent, concise man-machine operation. It is easy to use, large LCD screen display, high resolution, interface in both Chinese and English, shock-proof shell structure and so on. Can simultaneously measure the 4-channel current (ABC three phase and neutral wire current), 4-channel voltage (ABC three-phase voltage and neutral line voltage to ground), the peak value of current voltage, maximum/minimum value over a period, three-phase imbalance factor, short-time voltage flicker, transformer K factor, active power, reactive power, apparent power, power factor and displacement power factor, active power, reactive power, apparent power, total harmonic distortion and harmonic, etc; Display real-time waveform, harmonic ratio bar charts of current voltage; Dynamically capture instantaneous change of voltage current, monitoring starting current, monitoring the power parameters and generate the alarm list, generate the trend chart for a long time record test data.
In the current power applications, more and more large power equipment, power grid fault have become more and more complex, with development of the industry, it put forward high request more and more to quality that electric energy. We provide this power quality analyzer for that, which you can troubleshoot of complex power system more quickly and accurate, and monitoring and maintenance of power quality parameters more comprehensive and systemic.
Power quality analyzer adopt DSP + ARM double processor architecture, DSP is use for data collection and the processing of algorithm, the ARM is use for the communication protocol and the man-machine interface processing; Analog signal acquisition is by 2 pieces AD7655 of ADI company. Resolution for AD7655 is 16 bit and it is 4 channel synchronous sampling. The highest sampling rate can reach 1 MSPS, to ensure the accuracy of the channel and the information integrity, and wouldn’t miss any transient changes in the grid, can more accurate to detect the transient waveform rising and dropping drastically, and waveform instantaneous interrupt; DSP working frequency is over 200 MHZ, to be able to timely monitoring of the power grid and dynamically adjust the sampling frequency to realize synchronization of power frequency and sampling frequency; Using a 5.6 -inch LCD color screen display, a resolution of 640 dots x 480 dots, with different display color difference between the parameters of phase, waveform, vector diagram, harmonic ratio, the user can be more efficient and more intuitive understand the state of power grid parameters. Built-in flash memory can store 60 group of screenshots at the same time, 150 groups of capture transient voltage/current waveform figure, and 12800 groups of alarm list. Starting current detection model can continuously capture starting current waveform for 100 s. Built-in 2G memory card to store the trend curve record, simultaneous recording 20 parameters (can choose according to need) collect data for once every five seconds, trend curve records can be stored for 300 days.
Power Quality Analyzer also named: Intelligent Three Phase Power Quality Analyzer, Multifunctional Power Quality Analyzer, which simultaneous with the functions of harmonic analyzer, phase volt-ampere meter, electric parameter tester. It apply to electricity industry, petrochemical, metallurgy, railway, mining enterprises, scientific research institution, metrological department. Especially suitable for comprehensive analysis and diagnosis on all the voltage, current, power, power, harmonic, phase electric parameters.
Real-time waveform display (4 channels voltage / 4 channels current); voltage and current True RMS; voltage DC component; current and voltage peak; current and voltage maximum/minimum value within a certain time; phasor diagram display; The measurement of each phase harmonics reaches 50 times; the histogram shows the harmonic ratio of each phase current and voltage; the calculation of total harmonic distortion (THD); Active/reactive/apparent power value and total value of each phase; Each phase active/reactive/apparent electrical energy value and total value of each phase; transformer K factor calculation; calculation of COS φ displacement and power factor (PF); flicker calculation; three-phase unbalance calculation
(Voltage and current).
Capture and Monitoring Functions:Capture detection the instantaneous change of electric network voltage and current parameters, including voltage and current fluctuations, voltage and current swell, sag, short-time interruptions, transient over voltage, impulse current, and current and voltage instantaneous distortion. The instrument can store up to 150 groups of transient waveforms simultaneously.
Start-up Current Monitoring:
It can monitor the inrush current of the circuit and the starting current of the electrical equipment, helpful for the correct design of installed capacity. It can display the rise/fall curve of the effective value in start process, the envelope curve of the
start current, 4-channel current and 4-channel voltage waveform. After triggering, can be recorded about 100s, and store all current and voltage instantaneous values and waveform curves in each cycle within 100s.
Record and Storage Function:
All test parameters of basic test functions (Urms, Uthd, Ucf, Uunb, Hz, Vrms, Vthd, Vcf, Vunb, PST, Arms, Athd, Acf, Aunb, KF, W, VAR, VA, PF, COSφ, TANφ), voltage 50 times harmonic, current 50 times harmonic, total of 123 parameters for recording, and generate the trend diagram, record data for a long time as required. (Simultaneously select 20 parameters to record once every 5 seconds, can be recorded about 300 days).
The limit value of the selected parameters can set according to the require to monitoring whether the parameters exceed the limit, when exceed the limit setting will generate the alarm log , such as voltage overvoltage, current overcurrent, unbalance degree over-limit, certain harmonic ratio over-limit, frequency over-limit, active power over-limit, total harmonic distortion over-limit, etc. At most to set 40 groups of alarm monitoring parameters, each groups can set different monitoring parameters (including 50 times harmonics with 123 different parameters) and the limit value, and set the minimum time of over-limit. Stored Max 12800 groups alarm log.
Screen Capture Function:
Screen capture can be taken in any test page to store the present screen image, and record time and test mode automatically, Such as saving current voltage waves, harmonic histograms, phasor diagrams, etc. Save up to 60 screenshots simultaneously.
Through USB communication with the computer, the monitoring software can display the waveform of power quality analysis and test in real time, and can read the detected and captured transient waveform, trend chart record, alarm list, test screenshot, etc.
The user can set the time and date, the display contrast and brightness, and the corresponding color of each phase line in the instrument; the connection mode and power network type of the instrument can be set; can select different current clamp and different voltage test transformation ratio; Chinese menu or English menu can be selected.
At each stage of operation, press “help” key at any time to obtain relevant help information.