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Power Analyzers

Product Features

  • Most advanced Power Measurement Platform with an unprecedented range of capabilities

  • Highest Precision with Industry leading noise floor – as low as 1ppm vs 300ppm or more on competitive units

  • Up to 500 Harmonics at 400Hz, meets Airbus avionics harmonics measurement criteria. Bar graph also features fingertip selectable numeric amplitude and phase data

  • Large, Hi-Resolution Color Display shows all the data you want with an easy-to-use touchscreen user interface to get you up and testing in no time

  • Modular design lets you choose up to 4 Power Measurement Channel Cards in any combination of 3 different Channel Card types

  • The S type Channel Card provides 0.1% basic Accuracy with 1 MHz class bandwidth for an extremely economical price

  • The A type Channel Card offers world class 0.03% basic accuracy with 1MHz class bandwidth at a very reasonable cost

  • The W type Channel Card delivers 5 MHZ class bandwidth and a 0.1% basic accuracy

  • All Channel Cards types are available with one of 3 current input options: D – Dual Shunt, H – High Current and X – External Current Transducer Input

  • Built-in Data Logger – Logs up to 16 selectable data results to USB thumbdrive. Intervals from 10mS to 100 hours with optional time/date stamps

  • Power Data Screen – displays V, A, W, VA, VAR and PF data for any selected channel or group of channels

  • Custom Power Data Screens – lets you choose the color, font size, location and data you want displayed

  • With selectable time base and triggering – Scope View, acts as a digital scope to capture events such as in-rush current

  • Cycle View – Represents a single cycle of the voltage and current periodic waveforms sampled over many cycles within a measurement period

  • Vector Screen – Displays up to 10 fundamental voltage & current vectors

  • History Screen – Like a DVR, the PA900 automatically maintains a continuous historical recording of measurement data. Any data from this record may be viewed or downloaded. Pause, clear & restart functionality is available from the HISTORY screen or via interface

  • Standby Power Screen – Test in accordance to EN50564:2011 with an easy to set up, easier to use built in application. One screen holds all of your necessary data.

  • Effective Sampling Rate – for analysis of periodic signals within a measurement period is 384MSPS

  • Measurement Resolution – 22 bit for S & W type Channel Cards, 24 bit for A type

  • Up to 3 Different Virtual Power Analyzers™ (VPAs) may be configured for three phase measurements or input/output efficiency tests – so there is no need to interconnect separate units in order to make synchronous or non-synchronous group power measurements

  • VPA Efficiency Grouping – Available data includes: Power totals for IN, MIDDLE and OUT efficiency groups, the power loss between any pair of groups, and the percentage efficiency between any pair of groups

  • VPA Multi-Channel Wiring – Each VPA may be configured as 2ø3w (2 ch), 3ø3w (2 ch), 3ø3w (3 ch), 3ø4w (3 ch)

  • Connectivity – Ethernet, High Speed Serial and USB (client) control interfaces

  • Front Panel USB Drive Interface – Permits data logging to a file, ‘screen shot’ capture, easy import and export of: display and measurement configurations & custom data screen definitions

  • Available MT type Channel Card for motor torque & speed inputs

  • CE mark certified to EN61010

  • 2 Year Parts & Labor Warranty, 2 Year Accuracy Specs and calibration cycle

  • Made in the USA

Product Description

World Class Accuracy & Bandwidth
Easy-to-Use Touchscreen Operation
All the Data you need at a Price you can Afford

Introducing the Vitrek PA900 Precision Harmonic Power Analyzer, a refreshingly easy-to-use high performance power analyzer that won’t break your budget. The PA900 delivers multi-channel, high-accuracy, wideband performance – to tackle the toughest energy measurement applications. Trust Vitrek to deliver world class power measurement capability at a price that is surprisingly affordable.

The Vitrek PA900 Harmonic Power Analyzer:
Precision + Ease of Use = Affordability

PA900 tech

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. And when it comes to speed & 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 factor, 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 – at the tip of your finger.

The Best Solution for the Toughest Power Measurement Applications

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.

Harmonics Screen


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.

Power Data Screen


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 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


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.

Cycle View


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.

Vector Screen


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.

History Screen


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.

Standby Power Screen


The PA900 features built in standby power testing in accordance to 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 into any report. Various measurement methods laid out in EN50564:2011, minimum test time, and datalogging capability are all selectable. The PA900 also has the ability to perform standby power measurements independently in each configured VPA.

Modular Design means Flexibility

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 sampling speed fast enough to tame waveforms up to 5Mhz

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.