Power Factors Measure
Harmonic analysis of voltage and current up to 49th component
Inrush Currents Measures
Predefined and customized recordings configurations
Frequency Measure
Rechargeable Li-Ion battery and external AC/D adapter
USB Interface for PC Connection
Using of external compact flash and USB pen drives
Virtual Keyboard at Display
Active, reactive and apparent energies measures
HT Instruments PQA 824
Power Quality Analyzer CAT IV with HT98U
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The power quality analyzer HT PQA824 model permits an easy and wide fast analysis of a huge quantity of data any other system. Thanks to an innovative design and a graphic colour TFT "touch screen" wide display these models finally meet all requests from any exigent electrical verifier. The interface it's incredible "user-friendly" due to the intuitive icon selection of any kind of feature and a contextual help it's available for each screen. Each internal parameter it's easy to reach for effect of typical Windows tree structure.
The model permits the visualization of all parameters both in numeric and graphical mode with large use of waveforms and histograms (for harmonic analysis) screens. The vectorial diagram feature permit also to evaluate the mutual phase angle between voltages and current in order to understand the nature inductive or capacitive of the loads on an installation.
The power quality analyzer HT PQA824 have a great internal memory in order to save recording results for a lot of parameters (e.g: >3 weeks for 251 parameters and integrated period of 15 minutes), but this memory can be expanded by using of external compact flash cards fitted on meters. Pen drives USB connection it's also available in order to transfer recordings from meter and realize a practical and sure portable situation of all date. PQA824 meter are powered by a internal rechargeable Li-Ion battery which permits complete operation for more than 3 hours and are external supplied by using a 100/240V AC adaptor. USB interface permits the connection with PC for download and analysis of recordings with dedicated TOPVIEW Windows software
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The power quality analyzer HT PQA824 model also permits detection of fast voltage transients (spikes) with a minimum resolution of 5us (200kHz) with setting of different trigger thresholds very useful on troubleshooting problems on industrial installations (monitoring atmospheric discharging, analysis of switching problems, frequency noise.
A synoptic connection scheme on the display helps the user while connecting the instrument to the installation under test
- 4-wire, 3-wire, single-phase ARON
- STD or FLEX Clamps
- Frequency System
- Interfacing with Voltage transformers (TV)
Display in graphical and tabular form analysis of the quality of the electricity service in accordance with EN50160.
- 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
- 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
Recording Parameters
- Voltage dips and peaks
- Vrms / Irms and Power / Energy
- Harmonics and THD%
- Cosphi and Power Factor
- Frequency
- Unbalance
- Flicker
- Inrush currents
- Fast transients (spikes 5us)
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- 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.
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)
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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: