Motor Transducer Channel Card for use with PA920 Series Power Analyzer Mainframe (Slot 4 only)


Industry’s Easiest-To-Use Power Analyzer  – Vitrek’s PA910 Series power analyzers are the industry’s easiest-to-use power analyzer. Equipped with a full color touchscreen, the PA910 enables users to quickly and easily setup configurations, custom screens and interface commands.

Maximize Flexibility – The PA910 ower analyzer offers expanded power analysis options. The PA910 provides improved accuracy to 0.045% power for all channels and improved voltage and current self-heating adders over those of the PA900 series. In addition, the PA910 provides easy channel selection for the user while offering 100 full precision readings per second and measurement bandwidths sufficient to handle 5 MHz waveforms.

Maximum Results – For tackling tough power factor, low phase angle and high crest factor loads, the PA910 power analyzers are unbeatable. Offering full performance for crest factors as high as 100:1, the PA910 series provides superior power measurement capabilities for the toughest power measurement applications.

Maximum Performance in a Variety of Applications – 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 PA910/920 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.

Modular Design = Maximum Flexibility – The PA9xx Series Power Analyzers are available in both pre-configured models or can be purchased in a modular package to provide the performance you need at a price that meets your budget. A single PA910 offers 8 available channel combinations to meet your power analysis needs.

PA 910 Channel Cards for use with PA910 Mainframe (0.045% Accuracy)
VT Channel Card – Ultra-Precision Dual Shunt (1, 32A) Channel Card
VX Channel Card – Ultra-Precision External Current Transducer Input Channel Card
MT Channel Card – Motor Transducer Channel Card (Slot 4 only)

Harmonics Screen


To meet advanced power harmonics requirements, the PA910 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 PA910. 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 PA910 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 PA910 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 PA910 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.

Product Features

  • Newest and most advanced Power Analyzers on the market today
  • High Precision Accuracy – PA910=0.045%
  • 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
  • Built-in Data Logger – Logs up to 16 selectable data results to USB thumbdrive or internal data storage. 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
  • Optional Multi-Unit (Option MU) connection available to combine multiple PA900 units to enable you to make measurements with up to thousands of channels
  • 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

PA910 Specifications

Product Configuration Guide

To build a product configuration code for your PA910 add the 2 digit Channel Card codes (comma separated) in the order desired, for up to a maximum of 4 channel cards. The MT type card is available in slot 4 only.


A PA910VT,VT,VX,VX configures a PA910 with an VT type card in slots 1 & 2 and a VX type card in slots 3 & 4.
For units with all identical cards a product configuration code is not required. However, orders for units with different type channel cards require a configuration code to establish the desired location of each channel card. For orders placed online, please include the configuration code in the comment field.

PA 910 Channel Cards for use with PA910 Mainframe (0.045% Accuracy)
VT Channel Card – Ultra-Precision Dual Shunt (1, 30A) Channel Card
VX Channel Card – Ultra-Precision External Current Transducer Input Channel Card
MT Channel Card – Motor Transducer Channel Card (Slot 4 only)


Ordering & Accessories

Below prices in US$ are for destinations in North America with terms of prepay, net 30 days (OAC) and accepted credit cards. For shipment beyond North America or terms beyond 30 days, please contact the factory for a quotation. If you require rush/expedited shipment please contact Vitrek at (858) 689-2755 or email

PA 910 Pre-Configured Power Analyzer Units

PA910 Custom Configured Power Analyzers


The PA910 and accessories are available for rent. Please contact the factory for a rental quotation on the items and period of time you desire. Vitrek offers a generous rental allowance for rentals that are converted to a purchase and rentals of 12 months come with a 10% buyout.