Innovative power supplies TDK-Lambda DRF. Free Technical Library News

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Innovative TDK-Lambda DRF Power Supplies

23.04.2015

TDK-Lambda has developed a series of DIN-rail mounted power supplies with increased efficiency (up to 94%) and enhanced functionality.

The new series consists of models DRF120/240/480 for 24 V output voltage with the ability to adjust up to 28 V with a screwdriver or remotely (with an external voltage in the range of 5...6 V). Power supplies allow output overload up to 150% in power (4 sec.) and have a good start for capacitive and inductive loads.

The power supplies have the ability to remotely turn on / off, remote control of the output voltage through relay contacts (DC Ok) and the possibility of parallel connection to increase the output current. The DRF120/240/480 series power supplies have an active power factor correction circuit (>0,95), moderate inrush currents, overload and overvoltage protection; for electromagnetic compatibility meet the requirements of EN55022 class B (CISPR22-B).

Optionally, power supplies can be ordered with a special printed circuit board coating that meets the requirements of ATEX, IEC EX, GL (use in explosive and marine environments). In addition, the new power supplies have a very narrow package (taking into account the power output) and a 5-year warranty. The DRF120/240/480 series is designed for industrial control systems and factory automation, and for various electromechanical devices.

Main technical parameters:

Output power from a range: 120, 240, 240W;
Peak overload up to 150% (4 sec.);
Output voltage 24 V;
Input voltage range 85-264VAC/127-370VDC;
Efficiency up to 94%;
Power factor >0,95;
Remote ON-OFF;
Relay contacts DC Ok;
Manual and remote adjustment of output voltage 24...28 V;
Temperature range -25...+70°C;
5 year warranty.

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