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TDK-Lambda GEN 300-2.5
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GEN300-2.5 300 V, 2.5A, DC Power Supply

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The Genesys™ family of programmable power supplies sets a new standard for flexible, reliable, AC/DC power systems in OEM, Industrial and Laboratory applications. Now available in more power levels (750W, 1.5kW, 3.3kW, 5kW, 10kW and 15kW) and with available output voltages from 7.5 to 600V, and current up to 1,000A. Active PFC, and universal input head a long list of standard features.

This member of the Genesys™ product family of programmable switching power supplies provides high power density, low ripple and a complete set of user-friendly interfaces. In addition to high power density, popular worldwide single and three phase inputs are available. They feature Active Power Factor Correction of 0.99 typical at full load with the single phase input and 0.94 typical with three phase inputs. This assures operation in difficult AC environments and meets European EMC requirements.

The user-friendly front panel provides reliable control through encoders selectable for fine or course adjustment (6 or 30 turns) and four digit LED Voltage and Current meters. Adjustable OVP, UVL and Current Foldback provide further flexibility. Their set values may be previewed on the front panel display. The Foldback may be set to latch output off if desired for safety.

New Interface Options

The newest option in the Genesys™ family is an LXI Certified LAN Interface. Features include Fast Start-up, Fixed and Dynamic Addressing and LAN Fault Detectors. A LAN equipped Master can also communicate with MD Option equipped Slaves. The interface is compatible with most standard Networks.

Genesys™ 3.3kW includes several other important new features and options. Up to four like units may be connected in parallel and user configured for the Master to Program and Monitor the total current of the group. Thus, four units can appear as a single 13.2kW power supply, increasing flexibility for system designers.

In the Digital Options, a new option called Multi-Drop allows an IEEE Multi-Drop Master to control Multi-Drop equipped Slaves over RS-485, avoiding the cost of a GPIB board in every slave power supply. Up to 31 may be addressed over the RS-485 lines of Master and Slaves.

Significant safety features include Safe Re-Start and Last Setting Memory. With Safe Re-Start, the user can select whether the Genesys™ power supply returns to previous settings after power off, or returns to zero (safe) output, waiting for user instructions. Last Setting Memory retains settings of output voltage and current, remote or local mode, OVP and UVL, Foldback, Baud Rate and Start Up Mode, without battery. Front Panel controls also include Output On/Off and Local/Remote selection. The Front Panel may be locked locally or by software command.

Like other Genesys™ products, the 2U 3.3kW series includes standard, embedded 16 bit RS232/RS485 digital interface. Through this digital interface up to 31 power supplies may be controlled in daisy chain over the RS485 line. Analog remote programming is user selectable 0-5V or 0-10V via DIP switches on the rear panel. The design of Genesys™ power supplies is highly modular to offer short lead times. SMT technology provides high reliability.

Digital and isolated analog interfaces are optional. The optional IEEE digital interface is IEEE488.2 & SCPI compliant. Labview Drivers are available. Isolated analog programming options include either 0-5V & 0-10V or 4-20ma control.

AC Input
Single phase 230VAC

170-265VAC 47-63 Hz, with active PFC PF=0.99, Imax=24A

Three phase 208VAC
170-265VAC 47-63 Hz, with active PFC PF=0.94, Imax=15A

Three phase 400VAC
342-460VAC 47-63 Hz, with active PFC PF=0.94, Imax=7.5A

Output Characteristics

0.01% + 2mV line (cv)
0.015% + 2mV load (cv)
0.01% + 2mA line (cc)
0.02% + 5mA load (cc)

Protective Features

Adjustable OVP, UVL
Front Panel Lock
Adjustable Current Foldback
Safe/Auto Start


0-5V, 0-10V User Selectable via DIP Switch
RS-232/RS-485 Standard
Parallel Master/Slave setting reports total current of up to four like supplies connected in parallel

All models 19" W x 2U (3.5") H x 17" D Weight:


Options (Factory installed, Embedded)

Multi-Drop Options

• IEEE (MD) Master P/N: IEMD
Controls MD slaves via RS-485
• MD Slave P/N:
MD Accepts commands over RS-485 from IEEE Master. Reduces cost vs. individual IEEE options.

Interface Options
• Isolated Analog Program/Monitor

Allows operation with floating references and in harsh electrical environments.
IS510 - 0-5V & 0-10V User Selectable
IS420 - 4-20mA
• LAN - LXI Certified

Attributes (DC Power Supplies)
Form Factor
LXI Compliant
2.5 A
750 W
300 V
List of Options
1P230 Single Phase 170~265VAC
3P208 Three Phase 170~265VAC
National Test Equipment is an ISO 17025 Accredited Calibration Lab
National Test Equipment, Inc.
1935 Plaza Real
Oceanside, CA 92056

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