DIN-Rail Power Supplies Accept Three-Phase AC Inputs

Suitable for factory automation, industrial control systems and test and measurement equipment, a series of AC-DC DIN rail-mount power supplies provides outputs rated from 120 to 480 W. These supplies operate from a three-phase ac-line input from 340 to 575 V. Each series offers the most popular output voltages: 12-V dc and 24-V dc outputs are available in the DPP120 series (rated at 120 W); 24-V dc and 48-V dc outputs are available in the DPP240 series (rated at 240 W) and the DPP480 series (rated at 480 W). A key feature of these supplies is their bi-phase operation: Under a dropped phase condition they will continue to operate with the output power derated to 80%. All models incorporate power-factor correction in accordance with EN61000-3-2. Output voltages can be adjusted to allow for the voltage drop in cables and similar factors. Load regulation is ±1% when the supplies are used individually and ±5% when two supplies are connected in parallel for higher power applications. All models are suitable for either TS35/7.5 or TS35/15 DIN-rail mounting and have a robust metal case with convenient screw-terminal connections. All models carry a two-year warranty. The DPP 3-phase series are available now and are priced from $64 each in quantities of 1000. TDK-LAMBDA, San Diego, CA. (800) 526-2324.