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

RKT series

Programmable DC Turbo Power Supplies

"Turbo Function" is installed so that it can output widely in compact size!

  • Max Voltage: 80V to 650V
  • Max Current: 5A to 100A
  • Max Power:
    400W, 800W, and 1600W
  • Great operability

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

RKT series power supply is a programmable DC power supply with a distinctive turbo function achieving 4 to 5 times wider coverage of output voltage and current in comparison to conventional DC power supply of equivalent output power. You can apply to wide usage with only one unit but no need to apply power supplies with extra margin for output voltage and current because each unit can output voltage and current flexibly within the range of 400 W, 800 W, and 1600 W.

We have honed thoroughly there fundamental performance by adoption of the power factor correction circuit which contributes reduction of CO2 emission, individual 4 digits indicator for voltage and current, rotary encoder so that it is possible to set and read speedy and accurately, and so on. Also, for 400 W models, it have been enabled to set speedy by providing FINE switch so that it is possible to set the specified digits on the indicator at setting output. Moreover, they are applicable to various automatic measurement and production facility as LAN, USB, RS-485, and GPIB are selectable as a function for digital communication *.

  • A conversion adapter or additional option is required separately.

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)

Following Applications, for Example

Evaluation of electrics elements for automobile
Covered from 12 V to Higher Volt. by this One Unit.
Evaluation of Communication Equipment
To various Tests for Servers and Rooter.
Evaluation of Power Conditioners
For simulation of Solar Battery and Fuel Battery.
Evaluation of Power Devise
When you like to impress various voltage.
Evaluation of Inverter
Applied to multiple systems as 100 V or 200 V system with One Unit.

Models

Model Maximum Output Ripple
Voltage [V] Current [A] Power [W] [mVrms] [mArms] *1
RKT80-20(400W) 80 20 400 15 10
RKT80-50(800W) 50 800 20 40
RKT80-100(1600W) 100 1600 50 200
RKT330-13.5(800W) 330 13.5 800 50 45
RKT330-25(1600W) 25 1600 80 80
RKT650-5(800W) *2 650 5 800 50 5
RKT650-8(1600W) 8 1600 150 15
  1. At 10% to 100% of rated output voltage and rated output current.
  2. No output monitor terminals on front panel. Contact us when you need them.

Functions

Principal Functions

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.

Prevention of reverse current

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.)

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 setting, and convenient function for production inspection process or testing which require frequent data taking.

Setting is three times.
Memory (a)
Multi-setting memory display (a)
Memory (b)
Multi-setting memory display (b)
Memory (c)
Multi-setting memory display (c)

Two Mode Lock Function

Two modes can be selected; "Full Lock" which locks all front panel operations, "Standard Lock" which locks all operation except for OUTPUT ON/OFF. "Full Lock" mode shall be good in case mis-operation have to be completely avoided, and "Normal Lock" mode shall be good in case to avoid mis-operation but secure the way for emergency stop of power supply. You can select the best mode according to your level of "Security".

(In both modes, emergency stop is possible with Power Switch.)

Full LOCK

Lock all the function other than reset lock mode, and effective for purpose to avoid mis-operation when controlled.

FULL LOCK

Normal LOCK

Lock voltage and current setting dial, and effective for purpose to avoid changing output setting by mistake or when easy emergency stop is required.

NORMAL LOCK

Delayed Trigger Function

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

Function to delay the OUTPUT ON/OFF time. It is possible to use in case single unit of RKT series is used, and also when connecting several Matsusada 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 s to 99.9 s.

  1. R4K-36 series, R4K-80 series, RK-80 series, RK series, TB series and REK series. Detail catalog for each model is available. Please contact nearby sales office.
  2. Can be connected up to 16pieces.
  3. Only for slave-local. In case of slave remote control, exact same model of power supply need to be used. Also, in case of slave-local, each output voltage and current can be set individually. In case of slave-remote, output voltage and current can be set with one-control function 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 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.

* As for connection, please refer to "examples for operation".

Dual Tracking

Dual Tracking and Multi-Output

Multi Output

Dual Tracking and Multi-Output

Images of Output Range

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

RKT80-20(400W)
PKT80-20 400W
RKT80-50(800W)
PKT80-50 800W
RKT650-8(1600W)
PKT80-100 1600W

Useful New Functions

These are applicable to wide range of usages as various methods of use is possible by adding -LDe option.

Function for Pulse & Ramp Sequence and Master Follow (-LDe Option)

Output control as Next A to D are possible.

A. Pulse Sequence

Sequential operation is possible by using voltage and current set on each memory a, b and c in combination with multi-set function. Not only continuous operation, but also it is possible to specify the times. It is best fit to evaluation tests for products as various operations, like as repeat of a and b only or repeat of b, c and off only, are enabled by setting time of memory a, b, c and off to 0.0.

Pulse Sequence

ta,tb,tc and toff can be set to 0.0s、1.0s to 99.9h, respectively.

B. Ramp

It enables to make ramp action up to set voltage or current (or from the set voltage or current to 0V or 0 A). It is useful to like to rise (reduce) voltage or current slowly.

* For ramp action, it is possible to select "both of set voltage and current", "only set voltage" or "only set current".

Ramp

t1 and t2 can be to 0s to 999.9 s, respectively.

C. Pulse Sequence + Ramp

It is also possible to use pulse sequence combined with ramp action. If multi-set function is combined with the too, it is able to make sequence action by using voltage or current set on memory a, b and c. Not only continuous operation, but also it is possible to specify the times. It is useful in various aspects as it is possible to rise (reduce) voltage or current slowly up to 3 set value.

Pulse Sequence + Ramp

Range of 0 to 999s for t1 to t4 and range of 0.0 s to 999.9 s for ta to tc and toff can be set respectively.

D. Master Follow

Pulse sequence actions at master-slave and output signal to slave units at ramp action are transmitted. By this function, it is possible to make slave units to output on different output condition from the master unit.

* The master follow function is only available with the standard interface.

Master Follow

Note: Accuracy of the timer at sequence action ±0.5%. Please take care usage at long running.

Standard Functions

Remote Switch ON/OFF

Output is made ON/OFF with an external relay or open collector.

  • Sink current 1 mA
  • Logic of OUTPUT can be made reversed.
Remote Switch ON/OFF
Output Relay Open Collector
ON Short VCE ≤ 0.4 V
OFF Open VCE ≥ 2 V

Master/slave Control

One-control on local in parallel is enabled up to 16 units with master/slave operation

This is not a function for parallelly connected power supplies to give out average output current.

It has to hook with each same model in the same series in master/slave. (at Slave Remote at Delayed Trigger. See "Delayed Trigger Function".)
Master/slave Control
(A) CO-M cable
One piece (2m L) is included per a unit.(for 1600W Model, only for no interface option.) Please consult us from here, if much more extension required.

Function of Variable Internal Resistance

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

Digital Interface

In addition to digital control with LAN, USB, RS-232C, RS-485, and GPIB, one control is enabled in master/slave operation.

When noisy environment is presumed, -Gob (optical interface) is required.
See options for detail.
Digital Interface
(A) CO-M cable
A two-meter cable is provided in each model excluding 1600 W with interface option. If you need a longer cable, please consult us from here, if much more extension required.

Remote Control

Switching Remote/Local

Each mode for Voltage, Current,OVP, OVP can be switched with relay or TTL signal.

Switching Remote / Local
Mode External Relay TTL
remote short LOW
local open HIGH
Output Monitor
Output Monitor
Output 0 to MAX 0 Vdc to 10 Vdc
Output imp. 1kΩ
0 Vdc to 10 Vdc
Output imp. 1kΩ
Output Control
Output Control
Vout-Iout Control Voltage R *
0 to MAX 0 Vdc to 10 Vdc
Input Imp. 500 kΩ
0 Ω to 10 kΩ

* Possible to switch 10 kΩ to 0 kΩ for Fail-Safe

Output Control
Vout-Iout Control Voltage
0 to MAX
x 5% to 110%
0 Vdc to 10 Vdc
Input Imp. 20 kΩ
Output of Status
Output of Status
  • Output: ON at OUTPUT status
  • FLT: ON at abnormal status
    [ON for the status of OVP, OCP, OTP, reverse sense connection and interlock (LD).]
  • CV CC: ON at CV or CC status

COMMON is floating with the output of Open Collector for each COMMON. With stand voltage 30 Vdc, Sink Current 5 mA

A lot of Digital Control Functions

Control Function
  • Output ON/OFF set
  • Digital Control for 16 units (-LGob models: 32 units)
  • Package Control for Multi-hooked Units
  • Display of Various Status (Error Display/Status of Output/OVP/OCP/OPP/OTP/ACF/Reverse Connection of sense/Door Switch)
Write Function Setting Output Volt./Output Current Percent Mode (100.00%), * Volt./Current mode (Max. Rated Value for Volt./Current)
Setting for OVP/OCP Percent Mode (100.0 %), Volt./Current mode (Max. Protection Value to Overvoltage/Overcurrent)
Read Function Measuring for Output Volt./Output Current Percent mode(100.00%), * voltage current value mode (maximum rated voltage and current value)
Set Values of Output Volt./Output Current Percent Mode (100.0%), * Volt./Current mode (Max. Rated Value for Volt./Current)
Setting of OVP/OCP Percent Mode (100.0 %), Volt./Current mode (Max. Protection Value to Overvoltage/Overcurrent)

* Minimum value for each model is the same with the minimum displayed digit the indicator on the front panel.

Specifications

For details, download the datasheet below.

Options

-LDe: Pulse and Ramp Sequence

Please refer to Function for Pulse & Ramp Sequence and Master Follow (-LDe Option).

-LEt: LAN Interface Board *1 *2 *3

Digital control is enabled thru LAN.

-LEt LAN Interface Board

Hub needs between PC and RKT if control RKT thru LAN.

-LGob: Optical interface Board *1 *2 *3

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

Insulation control is made with optical communication.As perfect insulation is made by optical fiber it is able to forestall miss operation as transient phenomenon caused by surge, dielectric thunder or foreign noise, etc.

* When use them under following conditions, select -LGob always.
  • Noisy environment as in a factory. (Example. A motor or a coil is used near to load ot power supply)
  • Used in high voltage floating. (250 V and higher)
  • Our power supply and vontroller (PC or PLC) can not be installed with 2 m.
-LGob Optical interface Board
(B) CO-opt cable
As of models with -LGob option, a two-meter cable is provided in each model. If you need a longer cable, please consult us from here.

-LUs1: USB Interface Board *1 *2 *3

Digital control is enabled through USB.

-LUs1USB Interface Board

USB hub needs between PC and RKT if control plural RKT.

OS for Personal Computers: Microsoft Windows XP/Vista/7/8/10 Both of 32 bits and 64 bits are applicable

(Microsoft and Windows are registered trademark of Microsoft Corp. in USA and other.)

-LZ: Handle for carrying *4

Handle for carriage is attached on the top board.

-L(Mc0.5), -L(Mc0.15): Change Communication Cable Length

Length of CO-M cable is to be 0.5 m and 0.15 m, respectively. (only either one is selectable.)

  1. These options can not be selected together.
  2. If these options is selected for 1600 W model, standard digital interface and master-slave function are not equipped. Please refer to the catalog of digital controller for power supplies "CO series" for the detail of digital interface function.
  3. -L(Mc0.5) or -L(Mc0.15) option cannot be selected with -LGob, -LUs1 or -LEt option. (for 1600 W models)
  4. Rack Mount Type is not covered.

How to Order

When ordering, add Option No. in the following order by alphabet, and number to Model No.

Example:
RKT80-50(800W)-LDeGob(Mc0.5)Z
RKT650-5(800W)-LDeEt(Mc0.15)Z
RKT650-8(1600W)-LDeUs1

Cable

AC Input Cable

Please consult our sales staff about AC cable for 1600 W Models.

Standard

For 400 W Models
CABLE TYPE 1
125 V/10 A
  • CABLE TYPE 1 Power Input End
  • CABLE TYPE 1 Input Plug
For 800 W Models
CABLE TYPE 2
125 V/15 A
  • CABLE TYPE 2 Power Input End
  • CABLE TYPE 2 Input Plug

Option

For 400 W Models
CABLE TYPE 3
250 V/10 A
  • CABLE TYPE 3 Power Input End
  • CABLE TYPE 3 Input Plug
For 400 W Models
CABLE TYPE 4
250 V/10 A
  • CABLE TYPE 4 Power Input End
  • CABLE TYPE 4 Input Plug
For 800 W and 1600 W Models
CABLE TYPE 5
250 V/25 A
  • CABLE TYPE 5 Power Input End
  • CABLE TYPE 5 Input Plug
For 400 W Models
CABLE TYPE 13
250 V/15 A
  • CABLE TYPE 13 Power Input End
  • CABLE TYPE 13 Input Plug

Operations

Example for Applied Actions

With RKT series of the same model, output voltage and current can be increased by connecting power supplies in series or parallel. We recommend local control or master-slave control. Do not connect together COMMON of 2 units or more as the COMMON of connector for external input and output control (TB1) is connected with output.

Series Operation

Sum of output is up to 250 V. It is impossible to series operation for one exceeds 250 V in output volt. Output current is of the min. one of power supply among them.

Series Operation

Parallel Operation

Make all setting voltage same value. Output current is sum of each current. In addition, make OVP level for all power supplies maximum to prevent damage.

Parallel Operation

Split Operation

Possible to output on positive (+) or negative (-).

Split Operation

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