TDK has expanded its 3000 W TDK-Lambda HWS3000 programmable AC-DC power supply series with the new HWS3000GT4 model. This addition features a wide-range 340 – 528 Vac three-phase input, providing engineers with enhanced installation flexibility and compatibility with global industrial power systems.
It is designed to withstand electrically demanding environments, offering programmable nominal output voltages and currents from zero to their maximum ratings for precise control and rapid integration across various industrial applications.
The HWS3000GT4 supports output programming via a serial RS485 interface using the MODBus protocol or analogue signals ranging from 1 to 5 V or 4 to 20 mA. These connections facilitate integration with PLCs, automation systems, and test equipment.
The unit boasts a compact design with a variable speed fan, maintaining 45 dB noise at less than 70 percent load and a 25 ºC typical ambient temperature. Applications include test and measurement, semiconductor fabrication, RF amplifiers, laser machining, printing, and industrial equipment.
Delivering 3000 W from a three-phase input voltage of 340 – 528 Vac, the model offers six nominal output voltages: 24 V, 48 V, 60 V, 80 V, 130 V, and 250 V. These can be programmed to cover voltages from 0 to 300 V. Its compact 270 x 150 x 61 mm case allows up to three units to be connected in series or up to ten in parallel, providing scalable solutions for higher voltage or current needs.
The digitally programmable voltage slew rate, along with monitoring functions such as cumulative operating time and fault logs, enhances system control and diagnostics. Notably, digital programming can occur without powering the unit, improving safety and setup efficiency.
Standard features include a 5 V, 2 A standby voltage, remote on/off, remote sense, fan fail, and power good signals. With efficiencies reaching up to 93 percent, the unit minimises internal heating, ensuring reliable operation within its compact size. The HWS3000 models operate at ambient temperatures from -20 ºC (-40 ºC start-up) to +70 ºC, with a linear derating from 50 ºC to 50 percent load at +70 ºC. A
seven-year warranty and conservatively-rated electrolytic capacitor temperatures further support long-term reliability. Output terminals can be configured for either horizontal or vertical connections, offering additional installation flexibility.
Rugged versions with the /HD option include dual-sided board coating and meet MIL-STD-810G shock and vibration requirements for harsh environments. The /RF option allows airflow direction reversal to suit specific system needs.
The series offers input to output isolation of 3000 Vac, input to ground 2000 Vac, and output to ground 1500 Vac. Leakage current is less than 0.85 mA, with a maximum operating, transportation, and storage altitude of 5000 m (2000 m for the IEC/EN62477-1 standard).
Safety certifications include IEC/EN/UL 62368-1 and IEC/EN62477-1 (OVC III), with CE/UKCA marking for compliance with the Low Voltage, EMC, and RoHS Directives. The units meet EN55032A, EN55011-A, and FCC-A conducted and radiated emissions standards, as well as EN 61000-3-2 harmonics and IEC 61000-4 immunity standards.
