TDK Introduces Programmable AC-DC Power Supplies for Industrial Applications

TDK Introduces Programmable AC-DC Power Supplies for Industrial Applications

TDK has recently introduced the 3000 W TDK-Lambda brand HWS3000 programmable AC-DC power supplies in a 270 x 150 x 61 mm case size. The nominal output voltages (24 V, 48 V, 60 V, or 130 V) and output currents are fully programmable (CV/CC) from zero up to their maximum rating. The HWS3000 series is available with an 85 – 265 Vac single-phase or three-phase 170 – 265 Vac input.

Output programming can be achieved using a serial RS485 interface (MODBus protocol) or analog 1 - 5 V or 4 – 20 mA signals. These very compact products also feature a variable speed fan with typically 45 dB audible noise at <70% load, and a 25oC ambient temperature. The power supplies can be used in a wide range of applications, including test and measurement, semiconductor fabrication, RF amplifiers, laser machining, printing, and industrial equipment.

The HWS3000G can deliver 1500 W with a low-line single-phase input voltage (85 to 132 Vac) and 3000 W at high-line (170 to 265 Vac). The HWS3000GT provides 3000 watts from a three-phase input voltage of 170 – 265 Vac. Four nominal output voltages, 24 V, 48 V, 60 V, and 130 V, can be programmed to provide 0 - 28.8 V, 0 - 52.8 V, 0 – 66 V, and 0 – 156 V. Up to three units can be connected in series, or ten units in parallel. The output voltage slew rate can be digitally programmed and monitored, along with information regarding cumulative operating time, fault log, and product identification information. Digital programming can be performed without turning the power supply on.

A 5 V 2 A standby voltage, remote on/off, remote sense, fan fail and power good signals are fitted as standard. With efficiencies of up to 93%, internal heating is reduced, allowing reliable operation in the compact package size. The HWS3000 models can operate at -20oC (-40oC start-up) and up to +70oC ambient temperatures, derating linearly from 50oC to 50% load at +70oC. Both models have a five-year warranty and conservatively rated electrolytic capacitor temperatures for long field life. The output terminals are user-configurable for horizontal or vertical connections.

The input to output isolation is 3000 Vac, input to ground 2000 Vac, and output to ground 1500 Vac. The leakage current is <0.85 mA and the maximum operating, transportation, and storage altitude is 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 the Low Voltage, EMC, and RoHS Directives. The units meet EN55032A, EN55011-A, and FCC-A conducted and radiated emissions. The series also complies with the EN 61000-3-2 harmonics and IEC 61000-4 immunity standards.