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DIN-rail power supplies
18 August 2010, Power Electronics / Power Management
Augmenting its DPP range of three-phase DIN-rail AC-DC power supplies, TDK-Lambda has added a 960 W model.
The DPP960-3 series is available in 24 V and 48 V d.c. output models, making them well suited for use in factory automation, industrial control systems and test and measurement equipment.
The DPP960-3 operates from three-phase AC inputs in the 340 to 575 V, 47–63 Hz range without the need for switching or adjustment. An important feature of these power supplies is their bi-phase operation: under a dropped phase condition they will continue to operate with output power derated to 80%. All models incorporate power factor correction in accordance with EN61000-3-2. The unit is offered with a current sharing capability that shares power between the paralleled power supplies in redundant or increased power conditions. Output voltages can be adjusted to allow for voltage drop in cables.
For additional convenience in control and automation applications, the 24 V model includes a 0,3 A rated voltage monitoring relay. Here, the normally open contact closes when the supply output reaches 18,5 V ±0,9 V; this can be used to prevent misoperation of devices such as sensors and solenoids at reduced voltage, when their behaviour may be unpredictable, ie, below their nominal 24 V rating. Further protection features include over-voltage, output short circuit and over-temperature. The operating temperature range of the power supplies is from -25°C to +71°C.
The DPP960-3 series meets 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. They carry a two year warranty. For more information contact Brian Howson, Vepac Electronics, +27 (0)11 453 1910, sales@vepac.co.za, www.vepac.co.za |
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