RECOM, a leading provider of power solutions, has introduced the groundbreaking RMD series. This latest release boasts fully regulated single outputs, including the versatile 24V option, catering to a broad spectrum of global railway nominals. The standout feature of an ultra-wide input range, spanning from 16.8V to 137V continuously and 14.4V to 154V short-term, positions these products as a game-changer in simplifying logistics and optimizing stocking, availability, and pricing conditions.
One of the key highlights is the impressive efficiency of both series, with a typical rating of 94% (peaking over 95%). In comparison to alternative solutions with an average efficiency of 90%, this represents a substantial 40% reduction in power losses and heat dissipation in end-applications. The consequential decrease in heat dissipation is expected to significantly enhance the product's lifespan.
Encased in IP-20-rated metal cases designed for chassis mounting, these units support natural convection in any mounting position. Operating seamlessly in temperatures ranging from -40°C to +70°C continuously and up to 85°C for 15 minutes at full power without derating, these series meet rail operating temperature Class OT4, with an upcoming '-E' version extending the startup temperature down to an impressive -50°C.
The RMD series is not only technologically advanced but also compliant with a myriad of industry standards. Certifications include the rail standard EN 50155, EMC standards EN 50121-3-2, and IEC/EN 61000-4-2,3,4,5, along with EN 50124-1 for insulation coordination and EN 45545-2 hazard level HL1-HL3 for railway fire safety. Furthermore, the units hold certification to IEC/EC 62368-1 for non-rail applications.
With isolation rated at 3.5kVAC/5kVDC (reinforced grade), these products are designed for Over-Voltage Category III (OVC III) environments up to 2000m altitude and OVCII to 5000m. Environmental standards compliance includes EN 60068 for temperature testing and EN 61373 for life, shock, and vibration in Class B body-mount applications.
Practicality meets innovation with the RMD units, eliminating the need for external components or additional heat sinks. They come equipped with inrush current limitation, full protection against input reverse polarity and under-voltage, a 10ms holdup from 24VDC input after interruption or input short circuit, and safeguards against over-temperature, output over-current, over-voltage, and short circuits.
Notably, the RMD150 and RMD300 feature an internal OR-ing diode, facilitating parallel operation for increased power, redundancy, or even battery charging. The control and monitoring features include remote ON/OFF, a current share pin, output trim, and a 'Power OK' LED with associated floating changer contacts. RECOM's RMD series stands as a testament to cutting-edge railway power solutions, addressing efficiency, versatility, and robustness in one comprehensive package.
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