TDK-Lambda has released a series of AC-DC DIN rail mount power supplies with outputs rated from 120 to 480-watts that operate off a 3-phase AC line input from 340 to 575 VAC. These models are ideal for factory automation, industrial control systems and test and measurement equipment.
Each series is available with the most popular output voltages: 12 VDC and 24 VDC outputs are available in the DPP120 series (rated at 120 W) plus 24 VDC and 48 VDC outputs are available in the DPP240 series (rated at 240 W) and the DPP480 series (rated at 480 W). An important feature of these new units is their bi-phase operation; under a dropped phase condition they will continue to operate with the output power de-rated 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.
For additional convenience in control and automation applications, the 24 V model includes a voltage monitoring (DC Good) relay. The relay contacts are rated at 0.3 A and they close when the output voltage is above 17.6 V to 19.4 VDC; which can be useful in protecting devices such as sensors and solenoids that may be unpredictable at reduced voltages, i.e., below their nominal 24 V rating.
Further features of these DPP 3-phase series include over current protection, over voltage protection and over temperature protection with auto recovery. The operating temperature range of the power supplies is from -25°C to +71°C.
These new DPP 3-phase series power supplies from TDK-Lambda meet EN55022 Class B EMI standards (radiated and conducted), are CE marked, and are safety-approved to UL/EN60950-1 and UL508 specifications. 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.
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