Vitrek PA900 – Harmonic Power Analyzer (Mainframe Only, Input Cards Sold Separately)

• Mainframe only – does not include input cards
• Only the card is calibrated
• Most advanced power measurement platform with an unprecedented range of capabilities
• Highest precision with an industry-leading noise floor
• Up to 500 harmonics at 400 Hz – meets Airbus avionics power measurement criteria
• Large, high-resolution color display

The new Vitrek PA900 boasts an impressive array of precision power measurement capabilities, yet its color touchscreen user interface is refreshingly easy to use. The accuracy of the PA900 is truly world class-surpassing rival instruments costing triple the price. When it comes to speed and bandwidth, the PA900 tops the charts with 100 full precision readings per second and measurement bandwidths sufficient to handle 5 MHz waveforms. For tackling tough power factors, low phase angle, and high crest factor loads, the PA900 is unbeatable. Offering full performance for crest factors as high as 30:1 – the PA900 places the advantage of superior power measurement capability squarely in the palm of your hands or if you prefer the tip of your finger.

Please note: only the card is calibrated and not the power analyzer.

Energy is one of our most precious resources. Design engineers are under constant pressure to increase efficiency and reduce excess product power consumption down to the last mW. Challenging programs like LED and HID lighting, solar panel energy output, efficiency testing on inverters, and PWM motor drive systems on electric vehicles – all require fast, precise, reliable power measurement. The unequalled performance of the Vitrek PA900 gives you the competitive advantage-the ability to accurately capture the waveforms and power data you need to squeeze the last drop of extra energy out of your project.

The PA900 uses a modular design approach to provide the performance you need at a price that meets your budget. A single PA900 chassis holds up to 4 Channels of power measurement in any combination of three different Channel types.

• The S type Channel card provides economical, high-performance power measurement with a basic 0.1% accuracy and enough bandwidth to handle waveforms up to 1.25 MHz.
• The A type ultra-precision Channel card offers a 2-year accuracy rating of 0.03% of reading and bandwidth up to 1.25 MHz.
• The W type Wideband Channel card performs precision power measurements on the toughest real-world waveforms, with a sampling speed fast enough to tame waveforms up to 5 MHz.

And speaking of flexibility, each of the above Channel cards is available with your choice of 3 different current input options. The D current input option uses an auto-ranging Dual Shunt system to deliver precision current measurement from as low as 0.1micro-amp resolution on the 1 amp range up to 20 amps rms on the high range. For higher current measurements, the H current input option operates from 10 micro-amp resolution up to 30 amps rms. The X input current option is designed to provide optimum compatibility with a wide range of external shunts and current transducers. Vitrek makes it easy for you to configure a harmonic power analyzer that is perfect for your application.

Vitrek offers the PA900, PA910, and PA920 already configured with a variety of input cards. The following is an overview of available models:

PA900

• PA900 – without input cards
• PA901AD – with a Single High Accuracy AD Channel Card
• PA902AD – with Two High Accuracy AD Channel Cards
• PA903AD – with Three High Accuracy AD Channel Cards
• PA904AD – with Four High Accuracy AD Channel Cards

PA910

• PA910 – without input cards
• PA911VT – with a Single Very-High Precision VT Channel Card
• PA912VT – with Two Very-High Precision VT Cards
• PA913VT – with Three Very-High Precision VT Cards
• PA914VT – with Four Very-High Precision VT Cards

PA920

• PA920 – without input cards
• PA921UT – with a Single Ultra-Precision UT Channel Card
• PA922UT – with Two Ultra-Precision UT Cards
• PA923UT – with Three Ultra-Precision UT Cards
• PA924UT – with Four Ultra-Precision UT Cards

To meet advanced power harmonics requirements, the PA900 displays up to 500 harmonics even at aviation power frequencies. The chart can be set to show linear, relative linear, logarithmic, or relative logarithmic amplitudes. Additionally, 8 harmonics can be selected for numeric display of amplitude and phase by touching the harmonic bar of interest. The user may also import harmonic limits, which when enabled will show out-of-tolerance harmonics in red above the limit line.

The power data screen, available with one touch, displays V, A, W, VA, VAR, and PF data for any selected channel or group of channels known as a Virtual Power Analyzer (VPA). Up to three different VPAs can exist in a single PA900. In addition to the primary data, peak readings, phase, CF and other parameters are also available. Integrated data results (WHr) can also be controlled and viewed from the power data screen. For users with unique data requirements, custom data screens can be built with a spreadsheet application and downloaded to the PA900 via interface or USB drive.

Scope view offers waveform acquisition and analysis similar to a digital scope. Up to 6 signals can be displayed, each having user-selectable scaling, offset, and color. Timebase, trigger, and trigger position are all user-selectable. However, with amplitude accuracies as high as 0.03% – you are unlikely to find any other scope with this high level of precision.

The cycle view represents a single cycle of the voltage and or current periodic waveforms. The above waveforms represent a full 10V square wave in blue and a 50:1 zoomed-in view in red. Since the user sets amplitude and scaling – the result is an almost unlimited ability to amplitude zoom to expose fine detail. The sampling is forced to be asynchronous to higher-order harmonics which leads to an effective sampling rate of 384MSPS.

A polar chart graphically displays the fundamental voltage and current vectors for the selected channel or VPA. For multi-phase VPAs, the inter-phase voltages and non-measured neutral phase vectors are displayed. The user may enable the display of and select the color of each vector up to a maximum of 10.

The PA900 automatically maintains a continuous historical record of all non-harmonic measurement results and selected harmonics. Up to four user-selectable parameters can be graphically displayed using the HISTORY screen. The user can display the entire recorded period up to 397 days or zoom in as far as 1/64th of the total span. This provides an almost unlimited ability to amplitude zoom and includes a cursor which may be moved throughout the period with a touch of the screen.

The PA900 features built-in standby power testing in accordance with EN50564:2011 (replaces IEC62301) which can be started with the press of a finger from the STBY POWER screen. All information is neatly organized onto a single screen for easy viewing and can just as easily be saved as an image file into a connected USB drive to add to any report. Various measurement methods laid out in EN50564:2011, minimum test time, and data logging capability are all selectable. The PA900 also has the ability to perform standby power measurements independently in each configured VPA.