AZX Series – Regenerative AC and DC Power Source

Regenerative AC or DC Test Power

AZX Series

Regenerative High Power AC, DC and AC+DC Power Sources. Available in power levels from 30 kVA to 440kVA. Returns energy back to AC grid when sinking power.

For questions regarding the AZX Series and or custom solutions, please contact us directly


The AZX Series consists of a range of High Power Switching AC, DC and AC+DC capable Power Sources with regenerative capability to support both sourcing and sinking of current and power. Energy recovery to the grid enables testing of products using only a fraction of the required grid power when compared to using non-regenerative power sources, saving cost. The AZX also supports testing of grid-tied products like wind and solar inverters, energy storage systems (ESS) and electric Vehicle to Grid (V2G) and Vehicle to Home discharge systems.

Covering a power range from 30 kVA to 440 kVA and higher if needed. All AZX models offer singlesplit and three phase output configurations as well as special dual or triple independent outputs as needed. The AZX is a state-of-the-art design using Silicon Carbide (SiC) power devices for enhanced performance.

Great emphasis has been placed on energy efficiency, ease of installation, and maximum power. Control and operational features provide a high degree of application versatility and ease of use for the test engineer. Applications range from simple, manually controlled frequency conversion to IEC power line emission and immunity testing and with sophisticated transient simulation. For defense and aviation applications, the AZX supports a fundamental frequency range up to 1000 Hz and dual AC voltage ranges of 0~225Vac and 0~440Vac (L-N) respectively and to support most avionics compliance test standards. In DC mode, voltage ranges are 0~335Vdc and 0~650Vdc.

While analog inputs and outputs are standard on all AZX modes, for real-time Power Hardware in the Loop (HIL) Grid simulation applications, the AZX offers an optional high speed set of analog inputs and outputs with fast output response (Option -H).

Models Table

Model Rated Power (W/VA) Output Form Output Volts (Vac/Vdc) Output Amps/Phs (Aac/Adc) AC Input (2) #Units/Height Kg/Lbs
Cabinet Systems
3300AZX 30000 1,2,3 Ø 440 VLN / ±650 Vdc
225VLN / ±335 Vdc
45Arms/ 30Adc
90Arms / 60Adc
1 / 60″ 517/1140
3450AZX 45000 1,2,3 Ø 440 VLN / ±650 Vdc
225VLN / ±335 Vdc
65Arms/ 40Adc
110Arms / 80Adc
1 / 60″ 517/1140
3550AZX 55000 1,2,3 Ø 440 VLN / ±650 Vdc
225VLN / ±335 Vdc
75Arms/ 50Adc
130Arms / 100Adc
1 / 60″ 517/1140
3900AZX 90000 1,2,3 Ø 440 VLN / ±650 Vdc
225VLN / ±335 Vdc
130Arms/ 80Adc
220Arms / 160Adc
2 / 60″ 1034/2280
31100AZX 110000 1,2,3 Ø 440 VLN / ±650 Vdc
225VLN / ±335 Vdc
150Arms/ 100Adc
260Arms / 200Adc
2 / 60″ 1034/2280
31650AZX 165000 1,2,3 Ø 440 VLN / ±650 Vdc
225VLN / ±335 Vdc
225Arms/ 150Adc
390Arms / 300Adc
3 / 60″ 1551/3420
32200AZX 220000 1,2,3 Ø 440 VLN / ±650 Vdc
225VLN / ±335 Vdc
300Arms/ 200Adc
520Arms / 400Adc
4 / 60″ 2068/4560


Note: In Split Phase mode, rated power is 30kVA/30kW for 3300AZX, 33kVA for 3450AZX  & 36.7 kVA for 3550AZX Models.

  • For applications requiring more than 220kVA/kW, contact Pacific Power Source.
  • Three phase input voltage settings: 380 to 400VAC±10% or 480VAC±10%.

Key Features

Key Features Provide Application Versatility

  • Fully Regenerative Operation with energy recovery to the AC grid
  • Voltage Source and Current Source modes standard
  • Add Electronic Load (option L) to support Regenerative AC or DC Load Applications
  • Source and Sink full Power and Current
  • AC Mode, DC Mode, AC+DC Mode
  • DC, 1 to 15Hz, 15 to 1,000 Hz Frequency Ranges
  • Dual Constant Power mode AC Voltage Ranges 0~225V L-N and 0~440V L-N
  • Dual Constant Power mode DC Voltage Ranges 0~335V L-N and 0~650V L-N
  • Full power available in both AC and DC Modes
  • Precision True-RMS metering of Volts, Amps, Power, VA, Power Factor and Crest Factor
  • Waveform capture scope function for voltage and current on all phases
  • Harmonic measurement for voltage and current on all phases
  • Extensive Analog and Digital I/O for ATE and system integration
  • Option H adds fast responding analog I/O controls for PHIL application support
  • Available PPSC Manager Windows graphical user interface
  • Also compatible with legacy UPC Studio graphical user interface
  • 1, 2 or 3 Phase Selectable Output from front panel or bus command
  • Special 2 or 3 independent outputs settable to different modes (Voltage or Current Source or ELoad)
  • Sine, Square, Triangle, THD and Arbitrary waveforms
  • 3 Phase AC input with Active PFC, selectable input voltage
  • 200 stored programs for both static and dynamic Transient Testing
  • LIST, PULSE and STEP Transient Modes
  • Programmable Output Impedance (R+L) both Real-Time & RMS modes
  • Continuous Self Calibration (CSC)
  • Precision Voltage Programming – 0.02% with CSC engaged in AC and DC modes
  • Standard Models in Power Levels from 30 kVA to 220 kVA. Contact us for higher power.
  • Standard RS-232, USB, GPIB and Ethernet Interface with SCPI compatibility
  • LXI Compliant LAN/Ethernet with embedded web server
  • IVI Instruments drivers
  • CE (EMC/Safety) Marked

Design Provides Total Control of AC and DC Power

  • All AZX Series power source models are equipped with a digitally Programmable Controller.
  • Total control of the output power mode, phase mode (form) is available from the front panel or the bus.
  • All operating functions may be controlled from either the front panel or from a remote RS-232, USB, LAN, ModBus TCP or GPIB interface.
  • IVI Compliant Instrument Drivers are available.

Special AZX Series Operating Features

Continuous Self Calibration:

Provides for exceptional accuracy of the AC or DC output Voltage. When enabled, accuracy improves to ±0.02% referenced to the power source internal voltmeter.

Dual Voltage Ranges with Constant Power Operation:

Select between 225Vac LN or 440Vac LN voltage ranges for optomal power delivery at any  votage.

Waveform Library:

Up to 200 different waveforms can be stored in the waveform library for execution as part of a steady state program or for substitution in any output phase as part of a transient test program. Memory location #1 is a non-editable high resolution sine wave. Locations 2-200 are editable and can be substituted in any output phase. An unlimited number of waveforms may be stored on the computer using the available PPSC Manager Windows software.

Time Based Transients:

Create and execute transients that occur over a specified time segment to modify the output waveform, voltage, and frequency for any or all phases. LIST, PULSE and STEP Transient modes are supported.

An output trigger is provided for synchronizing external test equipment to the actual transient event.

Cycle Based Transients:

Create and execute transients that substitute a waveform in any or all phases for 1 to 100 cycles. The waveform being substituted can be selected and/or modified from the waveform library.


Regenerative AC or DC Test Power:

The AZX Series Power Source can both source and sink current and power from an EUT. Thus it acts as a Grid Simulator for testing of grid connected, energy producing products like PV Inverters or bidirectional EV Chargers. In DC mode, the AZX can be used to charge and discharge large battery packs up to 650Vdc with the addition of the Electronic Load Option L.

AC+DC Test Power:

Special test requirements such the application of a DC offset on an AC line or AC ripple on a DC supply output are supported by selecting the AC+DC Mode of operation.

Frequency/Voltage Conversion:

The AZX Series is an excellent source of stable AC voltage over the frequency range of 15 to 1,000 Hz. The output frequency is accurate to 0.01%.

Phase Conversion:

With the ability to provide singe, split and three-phase outputs, the AZX Series is the well suited to provide 1 Phase to 2 or 3 Phase or 3 Phase to 1 Phase conversion for large AC loads

Electronic Load Option

The AZX power source can be used as an electronic load by adding the “L” option.  With this option, full electronic load capabilities are added in both AC and DC mode. Regenerative Loads save cost by reducing electricity use and heat generation. They also allow testing of higher power EUTs as most of the power sent to the AZX load is regenerated back on the gird so the test lab power feed only has to cover the losses of the test equipment used and the EUT.

Supported Load Modes are Constant Current (CC), Constant Resistive (CR), Constant Power  (CP) and Circuit Emulation (CE).  Voltage, power and current ranges remain the same as in Voltage Source or Current Source modes.



The AZX Series controller offers both manual and full programmable control. Front panel operation is menu driven using a combination of direct access menu keys to the left of the large color display, five soft keys located on the right of the display as well as a color touch screen. The rotary knob can be used to scroll through menu fields and doubles as an ENTER key. The same knob allows for slewing of output parameters. A full decimal keypad is provided as well for direct parameter entry. The AZX can also be operated remotely from one of its included remote interfaces. Operation from a web browser via LAN or USB is also supported through the embedded web server of the AZX.


Power Source Specifications

Output Frequency:
DC, 1 to 15 Hz, 15 to 1,000 Hz.

Output Modes:

Phase Output Modes:
Single (1), Split (2) and Three Phase (3)

AC Voltage Ranges:
Low Range: 0 ~ 225 Vrms L-N / 0-390Vrms L-L Constant Power Mode
High Range: 0 ~ 440 Vrms L-N / 0-760Vrms L-L Constant Power Mode

DC Voltage Range:
Low Range: 0 ~ ±335 Vdc Constant Power Mode
High Range: 0 ~ ±650 Vdc Constant Power Mode

Programmable Impedance:
Resistive -10 Ohm to +10 Ohm, Inductive 0 to 2 mH

Mechanical Specifications

All AZX models are cabinet systems with rear panel terminal blocks for AC input and AC or DC Output connections. Cabinets are on lockable casters so they can be moved around easily if needed.

Form Factor:
Floor standing cabinet on casters.

Height /Depth:
Approximately 60/ 32 inches

24 inches per cabinet.

Front forced air intake with top exhaust. Automatic Fan Speed Control for low acoustic noise and extended fan life.

Expanding the AC Power Source into an Automated Test System

Pacific’s line of Smartsource® AC Power Sources enable engineers to easily automate their testing by using industry standard software development environments. The AZX series offers standard Ethernet/LAN connectivity, a browser interface, LXI compliance (LAN extensions for Instruments) to ensure inter operability with other LXI instruments and IVI (Interchangeable Virtual Instrument) driver to speed up ATE test program development.


3550AZX Regenerative AC & DC Power Source

32200AZX Parallel System

Available Transient Programming Modes

Programmable Load Power Factor from -1 to +1

Available Load Option Circuit Emulation Modes

AZX Series Overview Video

Brochures & Manuals

Product Brochure:

Download brochure to review product details.

Technical and Application Assistance:

Pacific Power Source’s seasoned sales and service team is here to help via chat, email or call 1-800-854-2433 or +1-949-251-1800.