• PRT series
  • PRT series

PRT series

High Power DC Turbo Power Supply

Capable of three times the previous voltage and current output within the rated output power

  • Max Voltage: 80V to 1500V
  • Max Current: 33A to 510A
  • Max Power: 5kW to 15kW
  • Variable internal resistance function

Achieves a wide range of voltage/current output that is three times higher than previous DC power supplies within the range of 15 kW rated output power

The PRT series of products are DC power supplies equipped with a turbo function, enabling output voltage and current across a range three times wider than previous DC power supplies with approximately the same rated output power.

Because each model can flexibly output voltage and current within the range of its rated output power, a single one of these units can be used for a wide range of applications without the need to introduce a power supply while allowing a margin for output voltage and current.

They not only enable wide output, but also take the baseline performance of a DC power supply to an even higher level, including the adoption of power factor improvement circuits that achieve a high power factor of 0.99, a large liquid crystal display with excellent visibility, and a rotary encoder capable of speedy and accurate setting.

Refer to PRTM series for a high-capacity DC power supply with PRT series in one rack. PRTM series


  • Equipped with a turbo function to achieve a wide range of output.
  • CV/CC priority setting function enables suppression of overshoot by setting the voltage/current rise sequence when output is turned ON.
  • Variable internal resistance function enables simple simulation of rechargeable batteries, photovoltaic cells, fuel cells, etc.
  • Sink current/sink current prevention function enables support for applications that call for maintaining voltage as well as applications requiring high-speed response. (Models with maximum output voltage of 500 V or less)
  • Ideal for research & development with its low-noise switching method.


Device evaluation
Evaluation of various devices with different ratings.
Evaluation and charging of rechargeable batteries
Evaluation testing and charging of batteries, capacitors, etc.
Evaluation testing of communications equipment
Various testing of servers and routers.
Evaluation of power conditioners
For simulating use of photovoltaic cells and fuel cells.


Model Maximum output Ripple
Voltage [V] Current [A] Power [kW] Voltage [mVrms] Current [mArms]
PRT80V170A5kW 80 170 5 25 120
PRT80V340A10kW 80 340 10 25 180
PRT80V510A15kW 80 510 15 25 240
PRT300V50A5kW 300 50 5 40 40
PRT300V100A10kW 300 100 10 40 60
PRT300V150A15kW 300 150 15 40 90
PRT500V33A5kW 500 30 5 70 16
PRT500V66A10kW 500 100 10 70 32
PRT500V100A15kW 500 100 15 70 48
PRT500V100A15kW-L (400 V) 500 100 15 70 48
PRT850V53A15kW 850 53 15 200 48
PRT850V53A15kW-L (400 V) 850 53 15 200 48
PRT1500V30A15kW 1500 30 15 350 26


Output Range Graphs

Turbo function enables a wide range of voltage and current output compared to previous DC power supplies. The PRT series outputs voltage/current with in the rated output power.


Main Functions

Supports Expansion with MASTER/SLAVE Control

Capable of covering a wide output range with parallel connections of up to 10 units in total.

  • Expandable to a total of 10 MASTER and SLAVE units combined.
  • During MASTER/SLAVE connections, values of output voltage/current for the overall unit are displayed on the output voltage/current meter of the MASTER. (Individual output values are not displayed on the output voltage/current meter of each SLAVE.)

Note: Always use cables with uniform thickness and length over the full length for output cables connected to the load from these devices.

[Connection Diagram]

Connection Diagram with MASTER/SLAVE

Dedicated cable for master/slave connection can be also prepared. This is the set of a parallel control cable and a cable with attached shared terminal. go to Master/slave control cable

Preset Memory Function

Equipped with memory preset function. Maintains preset values automatically when powered off. A maximum of up to three other voltage settings, current settings, power settings, and CV/CC priority settings can be saved.

Sequence Function

Equipped with programmable sequence function such as step time, step amplitude, ramp, CV/CC mode, sequence end setting, step jump, and jump count.
This allows free waveforms to be generated, enabling use for a variety of applications including testing and evaluation, and verification.

  • Step setting time 0.0 to 3,600 s
  • For one program, a maximum of up to 1,024 steps can be configured and stored
  • CV/CC mode can be set for each program
  • Repetition frequency: infinite, 1 to 999
Sequence Function

Because dedicated software for setting with PC is also attached, it is possible to use properly according to usage.

Dedicated Software Screen as Image
Software Screen as Image

CV/CC Priority Setting Function

CV (constant voltage) priority/CC (constant current) priority modes can be selected and set. At loads where resistance suddenly changes at certain points, such as diodes, current will overshoot if started in CV mode.

In the PRT series, occurrence of overshoot can be suppressed by selecting CC priority mode. The risk of damaging expensive loads such as high-power laser diodes can be reduced.

Also equipped with protection functions and front panel lock function as standard.

CV priority mode CV priority mode
CC priority mode

CC priority mode

* Overshoot is less likely to occur if the value is set to the lowest in the range that the CC state can keep, without releasing the voltage setting even in CC priority mode.

Sequence Setting Input & Output/Operation Log Output via Front USB Terminal

Sequence files can easily be read and logged by inserting USB memory into the front panel USB port. Sequence files can be created easily with a PC application.

Sequence Setting Input & Output

It is a dedicated software for viewing action logs.

  • Elapsed time
  • CC mode/CV mode
  • Output value (voltage, current, power)
  • Status
  • Error

These action logs can be displayed.

Two-mode Lock Function

Can be set by choosing from two modes: “Full LOCK” to lock all front panel operation and “Normal LOCK” to lock everything except the OUTPUT ON/OFF switch.

This is a convenient function that takes into consideration safety from the customer's perspective, with “Full LOCK” mode for reliably preventing erroneous operation and “Normal LOCK” for facilitating emergency stop while preventing erroneous operation.

Emergency stop via the POWER ON/OFF switch is possible in either mode.



Except for LOCK release, all switches, the touch panel and encoder are locked. Effective for preventing erroneous stop during remote control and completely erroneous operation.

Normal LOCK

Normal LOCK

Switches other than OUTPUT ON/OFF, the touch panel, and encoder are locked. Effective for preventing erroneous changes of output values during local control and to facilitate emergency stops.

Internal Resistance Variation Function (during CV mode)

Internal resistance is set to an arbitrary value, and a voltage drop is caused by the load current.Batteries, photovoltaic cells, and fuel cells can be simulated.
(The setting range of the internal resistance value is from 0 Ω to the rated voltage/rated current.)

Internal Resistance Variation Function (during CV mode)

Sink Current/Sink Current Prevention Function

The power supplies are equipped with a sink current function, making it possible to reduce the voltage quickly when turning off the output or when decreasing the voltage from a high setting value, thereby improving the safety of operation.
In addition, quick connections can be made after the output is turned OFF, and workpieces can be changed when conducting a series of burn-in tests.

Conversely, when supplying power to loads with capacities such as batteries and capacitors, the sink current prevention function can be used to reduce reverse current flowing from the load side to the power supply side and prevent a drop in load voltage when the output is off or when decreasing the set voltage.

* The sink current prevention function is not available in models that have an output of 850 V or higher.

Sink Current
Reverse Current Prevention

Note: Reverse current cannot be controlled and stabilized. Connect a dummy resistor or reverse current prevention diode when load of the reverse voltage is equal to or higher than the rated voltage (inductive loads, regenerative motors, etc.).

Status output

status output

Common is floating in open collector output of common.
Withstand voltage; 30 Vdc
Sink current; 5 mA or less


Front panel

This image is PRT series front panel.
  1. POWER ON/OFF switch
  2. Enter switch
  3. OUTPUT ON/OFF switch
  4. Cancel switch
  5. Intake port
  6. Settings/monitor display touch panel display
  7. USB terminal (Type A) for data input/output
  8. Setting change dial (also used as a switch)

Rear panel

PRT's Rear panel
  1. Master/Slave terminator switch
  2. Master/Slave connector terminal
  3. Share connector terminal
  4. Sensing connector
  5. - Output bus bar
  6. + Output bus bar
  7. Output LED
  8. Exhaust port
  9. Input connector terminal
  10. LAN connector terminal
  11. USB terminal (Type B) for communication control
  12. Analog remote connector


For details, download the datasheet below.


* The following options cannot be selected simultaneously.

-LGob: Optical interface board *

  • -LGob : Optical interface board + 2 m optical cable
  • -LGob (Fc5): Optical interface board + 5 m optical cable
  • -LGob (Fc10): Optical interface board + 10 m optical cable
  • -LGob (Fc20): Optical interface board + 20 m optical cable
  • -LGob (Fc40): Optical interface board + 40 m optical cable

Isolation control is performed by optical communication. As complete isolation is performed by means of optical fiber, this enables advance prevention of erroneous operation comprising transient phenomena resulting from surges, inductive lightning, external noise, etc.

Please purchase a control-side optical communications adapter separately. As for USB–optical converter adapter, USB–OPT by Matsusada Precision is compatible.

-LCa: CAN interface board * [Expected to be supported soon]

Output control and operation status monitoring of these devices can be performed using CAN communications.

-LCk: CC-Link interface board * [Expected to be supported soon]

Controlled by CC-Link from a CC-Link master device such as a PLC. Compatible with CC-Link ver1.10, and operates as a CC-Link device station. Two stations are occupied per unit, and a maximum of 32 units can be controlled.

(Please refer to materials of the CC-Link Partner Association for detailed specifications of CC-Link.)

How to Order

To order, please add the above option codes to the model number.


  • PRT80V510A15kW-LGob (Fc10)
  • PRT1500V30A15kW-LCk
Also compatible with Modbus communications via RS-232C/485. Contact a sales representative for details.


AC input cable cable Sold separately

Please be sure to contact a sales representative if the PRT series will be used in Europe.

  • Model Name: CABLE TYPE 14
    • Rated voltage/current: 600 V/58 A
    • Cable length: 10 m
      Contact a sales representative if you would like to extend the cable length.

* Install a breaker between the AC main power supply and the device when required by the local electrical code.

Master/slave control cable Sold separately

  • Model Name: PRT-MS# cable

This is a cable with a cable with shared terminal attached and a parallel control cable set. The length of each cable from the terminal to the terminal is approximately 1.5 meters. Therefore, when connecting 2 PRT, the length is about 1.5 meters, and when connecting 3 PRT, the length is about 3 meters.

To order, please put a number from 2 to 10 in #.
For example, if 2 PRT are to be connected as master/slave, 2 will be entered, and if 10 PRT are to be connected as master/slave, 10 will be entered 10.

The cable for connecting 3 PRT

the picture of cable for connectiong 3 PRT


For details, download the datasheet below.


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