High Reliability 1kW Railway Convection Cooled DC-DC Converters with Internal Redundancy

Absopulse DC/DC converter

ABSOPULSE Electronics has recently released the BHR 65X2R-4U2NF, a 1kW addition to its line of railway quality, long-life, convection cooled dc-dc converters.

The elimination of optical components, low component count, large design room and comprehensive electronic protection contribute to an MTBF of 175,000hrs at 45°C. The rugged mechanical construction has no internal wiring, which increases its vibration-withstand capacity. Natural convection cooling provides sufficient cooling for operations over a -20°C to 55°C temperature range without de-rating. Wider temperature ranges are available on request.

The BHR 65X2-4U2NF converters operate from DC-inputs of 72vdc, 96vdc, or 110vdc with wide EN50155 input ranges. They deliver a single, regulated output of 24vdc, 48vdc or 125vdc or custom. A +/- dual output configuration is also possible. Two 500W internal modules are connected redundant parallel, which provides inherent redundancy: the failure of one internal module would result in a 50% drop in output power while the unit remains functional at 500W. The converter can also be used as a 500W redundant power supply.

The converters meet the requirements of EN50155 for electronic equipment used on railway rolling stock designed for compliance with EN/UL60950-1 and equivalent safety standards.

Please contact ABSOPULSE Electronics for pricing and availability.

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