Rack Mount AC Power Source DRK series

* Optional models. Please refer to Options for details.

New Function Software calculated Remote sensing (at -LSn option)

It is possible to calculate differences between set value of output voltage and the voltage drop in the load end by resistance of output line and compensate for it. (Automatic Gain Control)

New Function Cut-off function to protect the load and Limiting function to withstand inrush current

There are various kinds of electrical devices that operate with AC voltage, and they may be required to stop immediately when abnormal current flows, or to continue to operate with some overcurrent. DRK series can set such behavior as necessary.

Cut-off function

It stops AC output safely when abnormal current flows into the load.

Limiting function

DRK adjusts the output current within the rated range and keeps supplying AC output when the load such as a motor at which the current several times as large as the rated current flows during startup is connected.

Refined and Simplified Operability

As it is able to call up commonly-used functions or output settings immediately, work efficiency is increased. For the application utilized in the same settings, as the latest settings are memorized, it is able to eliminate troublesome re-settings.

In case that several test patterns are repeated (for example, 90 V to 100 V to 110 V, 50 Hz/60 Hz), testing time is shortened very much by using the memory function.

For details, download the datasheet below.

Light, Compact and Space-saving

They have been considerably compact in comparison with traditional AC power sources and power sources which satisfy the needs of factories and experiment rooms requiring space-saving.

Standard Functions and Plenty of Options

External control is quipped as standard. They are applicable automation of production lines immediately as it is able to control remotely ON/OFF, voltage, frequency and ranges. And LAN, RS-232C, RS-485 and GPIB are applicable by option.

Remote Control

• Output ON/OFF
• Voltage control
• Frequency control
• Switching rang
• Output of fault
• Door switch
• Selection of control Remote or Local

Digital Interface Option

• USB
• GPIB
• Optical Interface
  (LAN, RS-232C, RS-485, GPIB)

Output Option

• 3 Phase
• Master-slave
• Single Phase 3-wire

Various Output: 3-Phase Output, Single Phase 3-wire Output, Master/slave

3-phase output, single phase 3-wire output and Master/slave hooking are applicable by options.
Also, they are applicable as a simple power supply by cancelation of option settings.

3-Phase Output

It is possible to test and evaluate 3-phase AC even where only single phase 200 Vac or 100 Vac is available

(3-phase output is planned with 1.2 kVA or 2 kVA model.)

Single Phase 3-wire Output

It is possible to test and evaluate single phase 3-wire even where only single phase is available.

Master/slave

When larger power supply is required, maximum 8 kVA is available with the master/slave hooking. (Master unit: one, slave units: 3)

Another Availability

Simplified Momentary Power Interruption Test

Please consult our sales staff for details.

It is able to make simplified momentary power interruption test for AC input equipment.

It is able to confirm operating conditions of equipment tested under such situation as simulating unstable aspect of power source line or aspect happened momentary power interruption.

For details, download the datasheet below.

-LGb: GPIB interface Board ^*1

ON/OFF with the Remote Switch, Switching Voltage Range, Variable Voltage, Variable Frequency, Status, Monitor for Voltage and Current

-LGob: Optical Interface Board ^*1

With optical communication, isolation control is performed. As complete isolation is performed by means of optical fiber, this enables advance prevention of erroneous operation involved with transient phenomenon caused by surges, inductive lightning, external noise, etc.

ON/OFF with the Remote Switch, Switching Voltage Range, Variable Voltage, Variable Frequency, Status, Monitor for Voltage/Current and various Interface (Please refer to datasheet for digital controller "CO/USB series" about optical conversion for various interfaces, LAN, USB, RS-232C, RS-485 and GPIB.)

-LMsm, -LMss: Parallel Connection ^{*3 *4 *5}

It is able to increase output power by paralleling. It is able to hook maximum 3 slave units per one master unit in the optional formation. (for AC mode only)

When the combination is changed, adjustment in our factory is required.

-LN: Release of Blackout Protection

Output of the power supply is made ON/OFF interlocking AC input voltage.

-LPhu, -LPhv, -LPhw: Multi-Phase connection ^{*3 *4 *5}

3 phase output mode is available. Each one unit optioned respectively is required.

-LSn: Software calculated Remote sensing ^*2

Go to Software calculated Remote sensing function.

-LUs1: USB interface Board ^*1

ON/OFF with the Remote Switch, Switching Voltage Range, Variable Voltage, Variable Frequency, Status, Monitor for Voltage and Current

-L1p3wm, -L1p3ws: Single phase 3-wire Connection ^{*3 *4 *5}

Single phase 3-wire output mode is available. Each one unit optioned respectively is required.

The momentary power interruption test function is available separately. Please consult our sales staff for details.

1. These options should be selected either one.
2. This option cannot be installed together with options for singe phase 3-wire connection (-L1p3wm, -L1p3ws) or options for (-LPhu, -LPhv, -LPhw).
3. DRK4k is not available.
4. (-L1p3wm or –L1p3ws), (-LPhu, -LPhv or -LPhw) and (-LMsm or -LMss), these options are should be selected either one. An option is required for each power supply.
5. When interface options (-LUS1, -LGb and -LGob) is applied, only the master unit (-L1p3wm, -LPhu or -LMsm) should be optioned. No option is required on slave units.

Input Cable for Single Phase AC (3 cores type) sold separately

DRK500

DRK1.2k

DRK2k

DRK4k

For details, download the datasheet below.