The latest addition to the RECOM portfolio for the railroad sector is the RMD500-EW series. With a rated power of 500W, a wide input range of 4:1 (43-154VDC) (170V peak) and an output of 24V, the product is suitable for rated inputs of 72V and 110VDC with tolerance and overvoltages according to EN 50155. The RMD500-EW is designed for 'plug-and-play' use and has all the functions required by EN 50155: Reverse polarity protection, EMC and overvoltage filtering, inrush current limiting and 10ms bridging time. All relevant environmental standards for the rail are met with regard to conducted and radiated EMI, mechanical shock and vibration, thermal shock, thermal cycling and fire protection.
The output power is 500W up to a baseplate temperature of 95°C without derating, which enables operation from -40°C to typically +70/85°C ambient temperature and meets the requirements of EN 50155 OT4 + ST1 and ST2. The high efficiency of up to 95.5% over a wide input range and down to light loads enables high power density in a compact 209 x 141 x 48mm baseplate cooled package that can be mounted in any orientation. Screw terminals are provided for convenient input and output connections.
The DC/DC converter is certified in accordance with EN 62368-1 and EN 50155 (S2) with 3.5 kVAC nominal insulation. RMD500-EW is extremely reliable and robust and has comprehensive protection against short circuit, output overvoltage, overcurrent and overtemperature. Other features include voltage-free DCOK relay contacts, remote ON/OFF, output trimming and active current sharing with OR diodes for parallel operation when increased power or n+1 redundancy is required.
Features RECOM RMD500-EW
- Fully track-approved for EN50155 (S2) applications
- EN50121-3-2, EN50124-1, EN62368-1, EN61373, EN45545-2
- Plug&Play unit for natural convection cooling
- Wide-range input for nominal 72V and 110V
- Outstanding efficiency and functionality
- Parallel and redundant operation
- Extremely reliable and robust
Products
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RMD500-110-24SEW
500W Railway DC/DC converter In: 50.4-137.5Vdc / Out 24Vdc / 21ACHF 410.10Available to order