200W, RIA12 Railway DC-DC converters with high input surge withstand capacity, wide input ranges, high power density


Encapsulated DC-DC converters provide surge withstand capacity 3.5 times greater than nominal input for 20msec, comply with RIA12 and EN50155 for railway applications

Railway DC-DC converters with RIA12 input range offer protection of traction and rolling stock equipment from transients and surges in DC control systems (P200L chassis)

Railway DC-DC converters with RIA12 input range offer protection of traction and rolling stock equipment from transients and surges in DC control systems in a P200Lchassis

ABSOPULSE Electronics’ RWR-212-P200L is a 200W series of fully encapsulated RIA12 railway quality DC-DC converters. The units have an input voltage surge withstand capacity 3.5 times nominal input voltage for 20 milliseconds and meet the requirements of RIA12 with wide margins. RIA12 is the general specification for protection of traction and rolling stock equipment from transients and surges in DC control systems.

The railway converters offer wide EN50155 input ranges of 24Vdc (14.4-34V), 36Vdc (22-51V), 48Vdc (29-67V), 72Vdc (43-101V), 96Vdc (58-135V) or 110Vdc (66-154V). The 200W units provide outputs of 12V, 24V or 48Vdc. Custom input and output voltages are available on request. Regulation is better than 1% from zero load to full load across all line and load conditions. Efficiency is 80% to 90% depending on input/output configuration.

The RWR-212-P200L converters meet the requirements of EN50155 for electronic equipment used on railway rolling stock. They are equipped with heavy filtering on the input and output and comply with EN50121-3-2. They also meet EN45545, EN61000-4-2 (ESD), EN61000-4-3 (RF Immunity), EN61000-4-4 (Fast Transients) and EN61000-4-6 (Conducted Immunity). Other protection includes 3000Vdc input-output isolation, overload protection, thermal protection and current limiting.

The DC-DC converters are fully encapsulated with a thermally conductive MIL-grade silicon rubber compound with a UL94V-0 flammability rating and meet environmental criteria as requested in MIL-810C, D. Encapsulation ensures heat dissipation throughout the module as well as protection from high levels of shock and vibration. Encapsulation also ensures immunity to moisture, fog, oil, salt, dust and other contaminants. Conduction cooling via base plate to customer chassis or heat-sink enables operation over a -40°C to +70°C temperature range for full specification without derating.

Railway DC-DC converters with RIA12 input range offer protection of traction and rolling stock equipment from transients and surges in DC control systems (P200L chassis)

Railway DC-DC converters with RIA12 input range in a P200X chassis 

The railway converters are available in a compact P200L type chassis with flanges installed on the side of the unit, which measures 94 x 60 x 230 mm or a P200X chassis, which has flanges at each end of the chassis and measures 70 x 57 x 253 mm.

ABSOPULSE Electronics is an original equipment manufacturer (OEM) of an extensive range of railway and industrial grade power conversion solutions. We specialize in fully custom solutions. All of our existing designs can also be modified to meet customer application requirements.

To discuss these designs or any of your power conversion requirements, please get in touch with us.

Key Specifications

  • 200W Railway quality DC-DC converters – EN50155 compliant;
  • Meet requirements of EN 50155;
  • RIA12 input voltage withstand capacity (3.5Vn for 20ms);
  • Input: 24Vdc, 36Vdc, 48Vdc, 72Vdc, 96Vdc, 110Vdc (EN50155 ranges);
  • Output: 12V, 24V, 48V or custom;
  • Line/load regulation: ±1% combined from no load to full load;
  • EMI: EN50121-3-2;
  • Conduction cooling via base plate to customer heat-sink or chassis;
  • -40°C to +70°C operating temperature range for full specification;
  • P200L enclosure: 94 x 60 x 230 mm (3.7″ x 2.4″ x 9.1″)
  • P200X enclosure: 70 x 57 x 253 mm (2.7″ x 2.2″ x 9.9″).

Generic Data sheet – RWR 212-P200L, RWR 212-P200X Series Railway DC-DC Converters

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