Bidirectional High-Capacity
DC power supplies

For progressive

PXB Series

electric applications

Our goal was to create a bidirectional power supply
that could meet “X” various requirements.

Ultra-compact: 20 kW in a single 3U size frame.
It can handle not only high voltages of 1500V but also has both power and regenerative modes.
Guarantees optimal operation at any stage of research, development, and manufacturing.

Bidirectional High-Capacity DC Power SupplyPXB Series

Condenses a 20 kW large-capacity output into a 3U-size chassis. Not only handling high voltages of 1500V, but also capable of both power and regeneration in both directions in a single unit.

We provide a new power supply test environment for electrical and electronic equipment that is becoming increasingly high-powered. In addition, a variety of analog, digital, and communication interfaces are provided for optimal operation at any stage of research, development, and manufacturing! A new generation of bidirectional DC power supplies that support the progression of advanced technologies.

High power density

high-power & compact
Condenses a 20 kW large-capacity output into a 3U-size chassis.

Bidirectional output

A single unit handles both power and regeneration.
For test applications such as inverters with increasing capacity.

1500V

Maximum voltage: 1500V high voltage compatible.

Selectable power input

Choose from 3-phase 3-wire 200 V or 400 V models. No output limitation for either input voltage.

Features

Output power range 2 to 3 times mains-powered operation

Output power range 2 to 3 times mains-powered operationMains-powered power supply with a wide range of operating ranges and combinations of voltage and current settings. If the voltage of the connected DUT is lower than the voltage setting of the PXB series, current flows from the PXB series to the DUT. If the voltage of the connected DUT is higher than the voltage setting of the PXB series, current flows from the DUT to the PXB series.

Achieves high-speed rise and fall times

Achieves high-speed rise and fall timesAchieves a rise/fall time of 10 ms, which is several tens of times faster than conventional switching power supplies. Enabling high-speed power fluctuation testing that cannot be handled by ordinary DC power supplies.

Highly stable operation with high resistance to capacitive loads

Highly stable operation with high resistance to capacitive loadsDesigned for highly stable operation, without oscillation or overshoot even when a load with a large capacitive component is connected.
Slew rate and response can be varied to match the characteristics of the connected load, suppressing oscillation and overshoot.

Optimized for different purposes and applications, with selectable response speeds

Optimized for different purposes and applications, with selectable response speedsThe required power supply response time varies depending on the test conditions and load specifications. The response speed of the PXB Series power supply can be changed to suit different applications.

Up to 10 units can be operated in parallel, achieving 200 kW

Up to 10 units can be operated in parallel, achieving 200 kWIncluding master machine, up to 10 units (200 kW) can be operated in parallel. Connection is with one-control parallel operation, and the panel of the master machine can control and display the entire system. With the automatic recognition function, the need for complicated settings is eliminated, allowing the construction of high-capacity systems.
* Parallel operation is possible between models with different input rated voltages. Please contact us if you wish to operate more than 10 units in parallel.

Sequence function

Preset operations can be run continuously. Total of 30 programs, and up to 10,000 steps can be created for all programs. Programs stored in the unit’s memory, and data can be exported to a USB memory stick from the front panel.

Pulse function / Sign function

“Pulse” operation can be set, which repeatedly executes a binary setting, or “sine” operation, changing the current in a sinusoidal manner.

Regenerative function (on-premises) contributes to carbon neutrality.

When power is regenerated to the main unit from an inverter or battery, the load power is converted to reusable power and regenerated to the AC LINE. This can contribute to reducing the amount of heat exhaust and saving energy.

Selectable power input

Full output at rated power regardless of input voltage. Choose from 3-phase 3-wire 200 V or 400 V models. No output limitation for either input voltage.

Equipped with touch panel display

By pressing or swiping a finger on the display, on-screen items can be selected, or numerical values set. The display is pressure-sensitive and can be operated even with gloves.

Output power range 2 to 3 times mains-powered operation

DC SEAMMains-powered power supply with a wide range of operating ranges and combinations of voltage and current settings. If the voltage of the connected DUT is lower than the voltage setting of the PXB series, current flows from the PXB series to the DUT. If the voltage of the connected DUT is higher than the voltage setting of the PXB series, current flows from the DUT to the PXB series.

Achieves high-speed rise and fall times

DC SEAMAchieves a rise/fall time of 10 ms, which is several tens of times faster than conventional switching power supplies. Enabling high-speed power fluctuation testing that cannot be handled by ordinary DC power supplies.

Highly stable operation with high resistance to capacitive loads

DC SEAMDesigned for highly stable operation, without oscillation or overshoot even when a load with a large capacitive component is connected.
Slew rate and response can be varied to match the characteristics of the connected load, suppressing oscillation and overshoot.

Optimized for different purposes and applications, with selectable response speeds

DC SEAMThe required power supply response time varies depending on the test conditions and load specifications. The response speed of the PXB Series power supply can be changed to suit different applications.

Up to 10 units can be operated in parallel, achieving 200 kW

DC SEAMIncluding master machine, up to 10 units (200 kW) can be operated in parallel. Connection is with one-control parallel operation, and the panel of the master machine can control and display the entire system. With the automatic recognition function, the need for complicated settings is eliminated, allowing the construction of high-capacity systems.
* Parallel operation is possible between models with different input rated voltages.Please contact us if you wish to operate more than 10 units in parallel.

Sequence function

DC SEAMPreset operations can be run continuously. Total of 30 programs, and up to 10,000 steps can be created for all programs. Programs stored in the unit’s memory, and data can be exported to a USB memory stick from the front panel.

Pulse function / Sign function

DC SEAM“Pulse” operation can be set, which repeatedly executes a binary setting, or “sine” operation, changing the current in a sinusoidal manner.

Regenerative function (on-premises) contributes to carbon neutrality.

DC SEAMWhen power is regenerated to the main unit from an inverter or battery, the load power is converted to reusable power and regenerated to the AC LINE. This can contribute to reducing the amount of heat exhaust and saving energy.

Selectable power input

DC SEAMFull output at rated power regardless of input voltage. Choose from 3-phase 3-wire 200 V or 400 V models. No output limitation for either input voltage.

Touch panel display

By pressing or swiping a finger on the display, on-screen items can be selected, or numerical values set. The display is pressure-sensitive and can be operated even with gloves.

SEAM mode

DC SEAMEquipped with SEAM mode allowing current to flow in both directions without changing voltage values. Suitable for charging and discharging storage batteries. Can suppress current overshoots and undershoots which may often occur during operation mode switching after charge/ discharge.

Variable internal resistance function

Function can change the output voltage value in constant voltage operation, according to the output current value based on the set resistance value. Simple simulation of Internal resistance of rechargeable batteries and wire harnesses etc.Variable internal resistance function

Range of settingsPXB20K-500 mΩ to 63 mΩ
PXB20K-2500 mΩ to 1575 mΩ
PXB20K-5000 mΩ to 5250 mΩ
PXB20K-10000 mΩ to 21000 mΩ
PXB20K-15000 mΩ to 63000 mΩ
 

I-V characteristic function

By registering multiple arbitrary points on the I-V characteristics, arbitrary I-V characteristics can be set for each CC and CV operation mode. Arbitrary points can be registered from 3 to 100, making it possible to simulate the I-V characteristics of rechargeable batteries and other devices.I-V characteristic function

By registering multiple arbitrary points on the I-V characteristics, arbitrary I-V characteristics can be set for each CC and CV operation mode.

Reliable and solid performance even under high temperatures

Solid performance under operating temperatures of 0°C to 50°C. Exhibits full performance even in environments with severe ambient temperatures, such as when installed in equipment.
Caution: PXB20K-50 and PXB20K-250 operates in the temperature range of 0°C to +40°C.50 ̊C

Safety Protection Function

  • OVP (Over voltage protection)
  • UVP (Under voltage protection)
  • WDOG (Communication error protection)
  • OPP (Over power protection)
  • OCP (Over current protection)
  • EXT LOW (External input alarm detection)

Priority operation mode

Mode of operation can be set, as constant voltage (CV), constant current (CC), or constant power (CP), when output is turned on. Overshoot can be prevented by setting CC mode priority when batteries, power supplies, etc. are connected.

External control function

The EXT CONT connector on the rear panel can be used to control the PXB series with external devices. The general-purpose digital input and output terminals can be assigned any function, facilitating system construction in combination with other measurement devices.
Digital I/O standard for both NPN and PNP type PLCs. Analog I/O is isolated from output terminals as standard, allowing safe analog control from PLC.

External control function

Terminal No.MethodI/ONameDescription
1DigitalOOUT Ch.1General-purpose output terminal
2DigitalOOUT Ch.2General-purpose output terminal
3DigitalOOUT Ch.3General-purpose output terminal
4--DO COMDigital output common
5--DI COMDigital input common
6DigitalIIN Ch.1General-purpose input terminal
7DigitalIIN Ch.2General-purpose input terminal
8DigitalIIN Ch.3General-purpose input terminal
9-O+12 V OUT12 V reference voltage available for digital input
10---Not used
11--A COMAnalog signal common
12AnalogOVMONVoltage monitor
13AnalogOIMONCurrent monitor
14DigitalOOUT Ch.4General-purpose output terminal
15DigitalOOUT Ch.5General-purpose output terminal
16DigitalOOUT Ch.6General-purpose output terminal
17--DO COMDigital output common
18--DI COMDigital input common
19DigitalIIN Ch.4General-purpose input terminal
20DigitalIIN Ch.5General-purpose input terminal
21DigitalIH ALARM INHIGH alarm EXT HIGH occurrence
22--12 V COM12 V reference voltage common
23--A COMAnalog signal common
24AnalogIEXT CVVoltage control in the constant voltage mode
25AnalogIEXT CC/CPCurrent control in the constant current / power modes
 
MethodFunction
Analog inputSetting of voltage and current values
Analog outputMonitoring of voltage and current values
General-purpose isolated digital input (Ch.1 to ch.5)
*Photocoupler isolated input
(Supports both current sink and source)
  • Output ON/OFF from DC OUTPUT terminal
  • LOW alarm generation / deactivation
  • Start / Stop totalizer measurement
  • Reset totalized value
  • Measurement trigger input
  • Preset memory recall
Digital input (Ch.6)HIGH alarm generation (Fixed)
General-purpose isolated digital output (Ch.1 to ch.6)
*Semiconductor relay output
  • Monitor output status of DC OUTPUT terminal
  • Power-on monitor
  • Alarm monitoring
  • Operating mode monitoring
  • Preset memory monitoring
 

General-purpose isolated digital input terminals are available from Ch.1 to Ch.5. Any setting value from the items listed on the right can be selected.

General-purpose isolated digital input terminals

General-purpose isolated digital output terminals are available from Ch.1 to Ch.6. Any setting value from the items listed on the right can be selected.

General-purpose isolated digital output terminals

Panel explanation

PXB front panel

PXB back panel

Applications

Inverter and motor evaluation test
Aging tests for bidirectional DC/DC converters

Line-up

Options

For detailed optional products, please check the individual product page.

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