HT Instruments PQA824 Three Phase Power Quality Analyzer

HT Instruments PQA824 Three Phase Power Quality Analyzer

General Features

• TRMS voltage measures (5 inputs)
• TRMS current on phases and neutral (4 inputs)
• Active, reactive and apparent powers measures
• Active, reactive and apparent energies measures
• Power factors measure
• Frequency measure
• Max 251 selected parameters at the same time
• Integrated period selectable from 1s to 60min
• Harmonic analysis of voltage and current up to 49th component
• Voltage anomalies (sags, swells) with 10ms resolution
• Numerical and graphical (waveforms) visualization
• Histogram visualization of harmonic analysis
• Vectorial diagram of voltages and currents
• Flicker analysis (Pst, Plt) in compliance to EN50160
• Voltage unbalance in compliance to EN50160
• Inrush currents measures
• Fast voltage transients with 5µs resolution
• Predefined and customized recordings configurations
• TFT colour display with "touch screen"
• 15Mbytes internal memory for recordings saving
• Using of external compact flash and USB pen drives
• USB interface for PC connection
• Windows software for recordings analysis
• Rechargeable Li-Ion battery and external AC/D adapter
• Contextual help selectable on each screen
• Virtual keyboard at display

Real-Time Measurements

• Waveforms of voltages / currents
• Vector diagram
• Power / Energy Active, reactive and apparent
• Power factor and Cosphi
• Harmonic voltage / current up to the 49th
• THD%
• Voltages unbalance
• Flicker

Recorded Measurements

• Voltage dips and peaks
• Vrms / Irms and Power / Energy
• Harmonics and THD%
• Phase angle and Power Factor
• Frequency
• Unbalance
• Flicker
• inrush currents
• Fast transients (spikes 5us)

Record Energy Consumption

• Total active energy consumed during the recording
• Max peak active power
• Date and time recorded at the peak of power
• Date of start and stop recording
• Record Time
• Display of the recorded power

Flicker measurement

• Pst = Severity of Flicker short term calculated in an interval of 10 minutes.
• Plt = Severity of Flicker long term calculated from a sequence of 12 values ​​of Pst on an interval of two hours.

 
Inrush current

• The power quality analyzer HT PQA824 is able to perform measurements and recordings of inrush currents with a minimum resolution of 10ms which is possible to obtain both numerical and graphical representations. The values ​​obtained are:
• 1000 events
• Phase L1, L2, L3 in which the event occurred
• Date / Time at which the event occurred
• Maximum value reached by the current

 
Fast transients (Spikes)

• The model PQA824 high sampling frequency allows you to perform the detection of fast voltage transients (spikes) with a resolution of at least 5μs (200kHz) and store them all in a full report of:
•  Number of stage on which occurred the spike
•  Date and time at which it occurred spike
•  Type Up or Down
•  Speed of the phenomenon Fast or Slow

   


Easy System Configuration
 

• 4-wire, 3-wire, single-phase ARON
• STD or FLEX Clamps
• Frequency System
• Interfacing with Voltage transformers (TV) EN50160 Analysis
• Display in graphical and tabular form analysis of the quality of the electricity service in accordance with EN50160.