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  • RKT series | DC power supply Benchtop | Matsusada Precision
  • RKT series | DC power supply Benchtop | Matsusada Precision

PROGRAMMABLE WIDE RANGE DC POWER SUPPLY

Turbo function a wide output range in a compact unit

  • Voltage range: 80V to 650V
  • Current: 8A to 100A
  • Power: 1600W
  • Great operability

Wide range output is possible with "turbo function" installed.

RKT series is a programmable DC power supply with a turbo function that can output up to five times more voltage/current than a standard DC power supply with the same output power.
A single unit can be used for a wide range of applications, eliminating the need for output voltage and current because each unit can output voltage and current flexibly within the range of 1600 W.

We have thoroughly honed their fundamental performance by adopting of the power factor correction circuit, which contributes to the reduction of CO2 emission, individual four digits indicator for voltage and current, rotary encoder so that it is possible to set and read speedily and accurately, and so on.
Moreover, they are applicable to various automatic measurements, and production facilities such as LAN, USB, RS-485, and GPIB are selectable as a function for digital communication.
* A conversion adapter or additional option is required separately.

APPLICATIONS

  • Evaluation of automotive electrical components, covering a wide range from 12 V to higher voltages by this one unit.

  • Evaluation of communication equipment to various tests for servers and rooters.

  • Evaluation of power conditioners for simulation of solar cells and fuel cells.

  • Evaluation of power device when you need to apply various voltages.

  • Evaluation of inverter applied to multiple systems as 100 V or 200 V system with one unit.

FEATURES

  • It realizes wide range output by installed turbo function.
  • Unique low noise power conversion technology for research application
  • Power factor correction and universal input
  • Simplified Simulation of rechargeable batteries, photovoltaic cell and fuel cell variable internal resistance.
  • The sink current suppression is used to reduce the reverse current flowing from the load to the unit in order to prevent a voltage drop on the load as the output is OFF or the set voltage is lowered.
  • Multiple units operation with master/slave and digital interface (option)

IMAGES OF OUTPUT RANGE

Possible to output wide range voltage and current compared with traditional DC power supplies by the turbo function.

RKT650-8(1600W)
RKT650-8(1600W) | RKT series | DC power supply Benchtop | Matsusada Precision

Models

Model Maximum output Ripple (rms)
Voltage Current Power Voltage Current *1
RKT80-100(1600W) 80 V 100 A 1600 W 50 mV 200 mA
RKT330-25(1600W) 330 V 25 A 80 mV 80 mA
RKT650-8(1600W) 650 V 8 A 150 mV 15 mA

At 10% to 100% of rated output voltage and rated output current.

Discontinued Products

Sales of the following models ended in January 2022. We continue to support the products.

Model Maximum output Ripple (rms)
Voltage Current Power Voltage Current
RKT80-20(400W) 80 V 20 A 400 W 15 mV 10 mA
RKT80-50(800W) 50 A 800 W 20 mV 40 mA
RKT330-13.5(800W) 330 V 13.5 A 800 W 50 mV 45 mA
RKT650-5(800W) 650 V 5 A 800 W 50 mV 5 mA

Functions

-LDe Option

(1) Function For Pulse & Ramp and Master Follow

Output control as next A to D is possible.

A. Pulse (Step) Sequence Function

The Sequence function lets you generate complex voltage and current patterns by automatically cycling through settings stored in memories a, b, and c. You can run the sequence continuously or for a specified number of cycles. By setting the duration of any step (a, b, c, or off) to 0.0, you can easily skip steps to create custom test patterns. This flexibility is ideal for product evaluation and reliability testing.

Pulse Sequence

The parameters ta, tb, tc, and toff can be set to 0.0 s, or from 1.0 s to 99.9 h.

B. Ramp Function

The Ramp function provides linear control to gradually increase the output to a set voltage/current, or decrease it to zero. This feature is useful for applications that require a slow power-up or power-down.
* The ramp operation can be applied to: Voltage and Current, Voltage Only, or Current Only.

Ramp

The t1 and t2 parameters can be set from 0 s to 999 s.

C. Combined Sequence and Ramp

For advanced control, the Sequence and Ramp functions can be used together. This allows you to create complex profiles by smoothly ramping the voltage and/or current between the discrete steps defined in memories a, b, and c. The entire waveform can be run continuously or for a pre-set number of cycles, making it a powerful tool for various testing scenarios.

Pulse Sequence + Ramp

t1 and t2 can be set from 0 s to 999 s, while ta, tb, tc, and toff can be set to 0.0 s or from 1.0 s to 99.9 h.

D. Master follow

Master-follow is a function that allows a slave equipment to follow the output status of the master equipment in a master-slave connection. The output status of the master equipment is transmitted to the slave equipment to enable interlocked operation. The master and slave can be set to different modes of operation, allowing for complex testing.

* The Master follow function is available only with Matsusada Precision's original digital interface.

Master Follow
Note: Time accuracy in sequence operation is ±0.5%. Take care when using the product in long-term running operations.

(2) Sweep Control Programming

Easy programming of sweep operation!
With the -LDe option, the available sweep commands are adapted by setting the arrival time and arrival conditions (voltage/current). Since there is no need to set commands that are repeated step by step, it is easier to create new programs and change conditions, saving a great deal of operation time. It also contributes to securing time for development, research, etc.

For details, download the datasheet below.

[Operation image]
Sweep Control Programming | Rack Mount DC Power Supplies｜RKT series｜Matsusada Precision

Sink Current Suppression

When supplying power to loads with capacities like batteries and capacitors, the sink current suppression is used to reduce the reverse current flowing from the load to the unit in order to prevent a voltage drop on the load as the output is OFF or the set voltage is lowered.
Note: Reverse current cannot be controlled and stabilized. Connect a dummy resistor or reverse current prevention diode when a load of the reverse voltage is equal to or higher than the rated voltage. (inductive loads, regenerative motors, etc.)

Prevention of reverse current

Multi Setting Function

Memorize three voltage and current settings in addition to the standard preset values. There is no need to adjust the output when different settings, and convenient function for the production inspection process or testing which requires frequent data taking.

Setting is three times.

Two Mode Lock Function

Two modes can be selected: "Full lock" which locks all front panel operations, "Standard lock" which locks all operations except for OUTPUT ON/OFF. "Full lock" mode shall be good in case a miss-operation has to be completely avoided, and "Normal lock" mode shall be good in case to avoid a miss-operation but secure the way for an emergency stop of the power supply. You can select the best mode according to your level of "Security".
(In both modes, emergency stop is possible with Power Switch.)

Delayed Trigger Function

In case the -LUs1, -LEt, or -LGob option is selected, only one unit of the RKT series can be used.

Function to delay the OUTPUT ON/OFF time. It is possible to use in case a single unit of RKT series is used, and also when connecting several Matsusada Precision power supplies (*1) using master-slave connection terminal (*2) and output voltage/output current are set individually, delay trigger function can be used. (*3)

Delayed Trigger Function

* t1 to T8 can be set in the range 0.0 to 99.9 s.

  1. R4K-36 series, R4K-80 series, RK-80 series, RK series, TB series, and REK series.
  2. Can be connected to up to 16 units.
  3. Only for slave-local. In the case of the slave remote control, the exact same model of power supply needs to be used. Also, in the case of slave-local, each output voltage and current can be set individually. In the case of slave-remote, output voltage, and current can be set with a one-control function in which each slave unit follows the master unit setting.

Dual Tracking, Multiple Outputs

Dual tracking control which enables both positive and negative outputs simultaneously in master-slave operation is possible. Multi outputs and various versatile operations are also possible by combining the above dual tracking control and slave local mode.

Positive and negative output (+V, -V) of dual tracking control and set output voltage of slave local mode can be output simultaneously by turning on the master unit.

Dual tracking

Dual Tracking and Multi-Output

Multi output

Dual Tracking and Multi-Output

Digital Interface Port

This is Matsusada Precision's proprietary digital communication port. This interface has modular type IN and OUT ports to allow daisy-chain connection. Combined with an adapter (sold separately). Multiple power supplies can be controlled at once. Adapters for LAN, USB, RS-232C, RS-485, and GPIB are available so that you can choose a suitable communication interface. One-control operation by master-slave connection is also possible.

Master-slave |Benchtop DC Power Supply | Matsusada Precision
Master-slave connections require all units to be the same model within the series.
(at Slave remote at Delayed trigger. )
If a noisy environment is expected, the -LGob optical interface port option is required.

External Analog Remote Control

  • External output ON/OFF
  • Switching REMOTE/LOCAL
  • Output monitor (Voltage, Current)
  • Output control (Voltage, Current, Overvoltage protection, Overcurrent protection)
  • Output of status

Variable Internal Resistance Function

It is possible to simulate simply rechargeable battery, solar panel, or fuel cell by making voltage depression from current loaded by setting internal resistance to 0.00 to 32.00 Ω in CV (Constant Voltage) mode operation.

Specifications

Input voltage
85 to 264 Vac, 50/60 Hz, Single-phase
Output voltage control
[Local] Rotary encoder on front panel
[Analog remote] External control voltage 0 to 10 Vdc or external 10kΩ potentiometer
[Digital remote] Command
Output current control
[Local] Rotary encoder on front panel
[Analog remote] External control voltage 0 to 10 Vdc or external 10kΩ potentiometer
[Digital remote] Command

For details, download the datasheet below.

FAQs

Options

-LDe

Pulse and ramp sequence
Please refer to Function for Pulse & Ramp Sequence and Master Follow.

-LEt

LAN interface port*1 *2 *3
Digital control is enabled through LAN.
Hub needs between computer and RKT if control RKT thru LAN.

-LEt LAN interface port
-LGob

Optical interface port*1 *2 *3
This option changes the standard interfaces to a built-in optical interface port. By combining this option with an adapter for optical connection (sold separately), communication between the control device and the power supply can be controlled in an isolated state. Be sure to select this option when using the product in the following environments.

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

Select the optional optical interface port (-LGob) when using this DC power supply under the following conditions.

  • Noisy environments such as factories (example: when motors or coils are used near loads or power sources).
  • If this power supply and your controller (PC or PLC) cannot be installed within 2 meters.
  • When there is a possibility of arcing or output short-circuit.
-LUs1

USB interface port*1 *2 *3
Digital control is enabled through USB.
USB hub needs between computer and RKT if control plural RKT.
OS for USB driver: Microsoft Windows Xp/Vista/7/8/10 Both 32 bits and 64 bits are applicable (Microsoft and Windows are registered trademarks of Microsoft Corp. in the USA and others.)

-LUs1USB interface port
-L(Mc0.5)/-L(Mc0.15)

Change communication cable length
The length of the CO-M cable is to be 0.5 meters and 0.15 meters, respectively. (only either one is selectable.)

  1. These options can not be selected together.
  2. If these options are selected, the standard digital interface and master-slave function are not equipped.
    Please refer to the datasheet of a digital control adapter for power supplies "CO/USB series" for the details of the digital interface function.
  3. -L(Mc0.5) or -L(Mc0.15) option cannnot be selected with -LGob, -LUs1 or -LEt option.

How to order

When placing an order, please add the option code(s) after the model name. If adding two or more options, omit the “-L” from the second and subsequent option codes, and list them in alphabetical order, with the cable length option placed at the end.
Example: RKT80-110(1600W)-LDeGob(Fc0.5), RKT330-25(1600W)-LDeEt(Mc0.15), RKT650-8(1600W)-LDeUs1

Accessories

AC Input Cable
Sold separately
CABLE TYPE5
 CABLE TYPE5 CABLE TYPE5 300 V/25 A 2.5 m

Please consult our sales staff about AC cable.

Digital interface port

To use Matsusada Precision's digital interface, you need to prepare a digital interface adapter separately. The following interface adapters are available according to your controller port.

  • CO-E32m: LAN Adapter
  • CO-U32m: USB Adapter
  • CO-MET2-9: RS-232C (9 pin) Adapter
  • CO-MET2-25: RS-232C (25 pin) Adapter
  • CO-MET4-25: RS-485 (25 pin) Adapter
    The connector is D-sub type.
  • CO-G32m: GPIB Adapter (Scheduled for discontinuation in December 2028)
Example of communication with a digital adapter
Example of communication with a digital adapter | RKT series | Benchtop DC Power supply | Matsusada Precision

For details, refer to CO/USB series

Optical isolation adapter

To use the optical interface, you need to prepare an optical interface adapter separately. The following interface adapters are available according to your controller port.

  • CO-E32: LAN to optical interface adapter
  • USB-OPT: USB to optical interface adapter
  • CO-OPT2-9: RS-232C (9 pin) to optical interface adapter
  • CO-OPT2-25: RS-232C (25 pin) to optical interface adapter
  • CO-OPT4-25: RS-485 (25 pin) to optical interface adapter
  • CO-G32: GPIB to optical interface adapter (Scheduled for discontinuation in December 2028)
Example of communication with optical fiber
Example of communication with optical fiber | RKT series | Benchtop DC Power supply | Matsusada Precision

For details, refer to CO/USB series

Application software

PSS2en series: Remote control, Test workflow design, and Data logging

PSS2en is the dedicated software that can actuate various power supplies, electronic loads, and digital controllers for power supplies manufactured by Matsusada Precision Inc. with a simple setup.
It is perfect for the aging test, the burn-in test, and the withstand voltage test for electronic parts, as well as for the endurance test, intermittent/continuous operation test, or various simulation tests for automobile electric components.

PSS2en | Application software for power supplies and electronic loads | Matsusada Precision
Click here for the PSS2en series

Dimensions

For details, download the datasheet below.

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